WO2003105265A1 - 液体燃料供給型燃料電池 - Google Patents
液体燃料供給型燃料電池 Download PDFInfo
- Publication number
- WO2003105265A1 WO2003105265A1 PCT/JP2003/006802 JP0306802W WO03105265A1 WO 2003105265 A1 WO2003105265 A1 WO 2003105265A1 JP 0306802 W JP0306802 W JP 0306802W WO 03105265 A1 WO03105265 A1 WO 03105265A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- electrolyte membrane
- supply type
- liquid fuel
- fuel
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 210
- 239000007788 liquid Substances 0.000 title claims abstract description 37
- 239000012528 membrane Substances 0.000 claims abstract description 81
- 239000007800 oxidant agent Substances 0.000 claims abstract description 52
- 239000007784 solid electrolyte Substances 0.000 claims description 30
- 239000011347 resin Substances 0.000 claims description 20
- 229920005989 resin Polymers 0.000 claims description 20
- 229920001721 polyimide Polymers 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 239000009719 polyimide resin Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims 1
- 229920001568 phenolic resin Polymers 0.000 claims 1
- 239000005518 polymer electrolyte Substances 0.000 abstract description 51
- 239000007787 solid Substances 0.000 abstract description 47
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 abstract description 2
- 230000005012 migration Effects 0.000 abstract 1
- 238000013508 migration Methods 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 description 28
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- 239000003054 catalyst Substances 0.000 description 23
- -1 hydrogen ions Chemical class 0.000 description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 21
- 229910052799 carbon Inorganic materials 0.000 description 19
- 239000002245 particle Substances 0.000 description 18
- 239000001257 hydrogen Substances 0.000 description 16
- 229910052739 hydrogen Inorganic materials 0.000 description 16
- 238000000034 method Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 239000003792 electrolyte Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 239000012298 atmosphere Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000003566 sealing material Substances 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 229920000620 organic polymer Polymers 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 239000003014 ion exchange membrane Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 239000005871 repellent Substances 0.000 description 3
- 229910052707 ruthenium Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 3
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000001174 sulfone group Chemical group 0.000 description 2
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FKOZPUORKCHONH-UHFFFAOYSA-N 2-methylpropane-1-sulfonic acid Chemical compound CC(C)CS(O)(=O)=O FKOZPUORKCHONH-UHFFFAOYSA-N 0.000 description 1
- 229920003934 Aciplex® Polymers 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229920003935 Flemion® Polymers 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004693 Polybenzimidazole Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002116 nanohorn Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N phosphine group Chemical group P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 1
- 229920002480 polybenzimidazole Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- QJWFJOSRSZOLKK-UHFFFAOYSA-N prop-2-enamide Chemical class NC(=O)C=C.NC(=O)C=C QJWFJOSRSZOLKK-UHFFFAOYSA-N 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8605—Porous electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0289—Means for holding the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1009—Fuel cells with solid electrolytes with one of the reactants being liquid, solid or liquid-charged
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1065—Polymeric electrolyte materials characterised by the form, e.g. perforated or wave-shaped
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1067—Polymeric electrolyte materials characterised by their physical properties, e.g. porosity, ionic conductivity or thickness
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2455—Grouping of fuel cells, e.g. stacking of fuel cells with liquid, solid or electrolyte-charged reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
- H01M4/921—Alloys or mixtures with metallic elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a fuel cell that generates power while directly supplying a liquid fuel to a fuel electrode.
- the polymer electrolyte fuel cell has a configuration in which an ion exchange membrane such as a perfluorinated sulfonic acid membrane is used as an electrolyte membrane, and electrodes (a fuel electrode and an oxidant electrode) are bonded to both surfaces of the ion exchange membrane.
- an ion exchange membrane such as a perfluorinated sulfonic acid membrane
- electrodes a fuel electrode and an oxidant electrode
- hydrogen is supplied to the fuel electrode and oxygen or air is supplied to the oxidant electrode, and power is generated by an electrochemical reaction.
- polymer electrolyte fuel cells usually use an ion exchange membrane, which is a solid polymer electrolyte membrane, and carbon, on both surfaces of the ion exchange membrane, on which a catalyst substance is supported.
- An electrode comprising a catalyst layer comprising a mixture of fine particles and a solid polymer electrolyte and a gas diffusion layer (supply layer) comprising a porous carbon material for supplying and diffusing fuel and oxidizing gas; and carbon or metal. And a current collector made of a conductive thin plate.
- the fuel supplied to the fuel electrode passes through the pores in the gas diffusion layer (supply layer) and reaches the catalyst, where the fuel is decomposed by the action of the catalyst, and electrons and hydrogen ions are generated. Generated.
- the electrons are led to the external circuit through the catalyst carrier in the fuel electrode and the gas diffusion layer (supply layer), and flow into the oxidant electrode from the external circuit.
- hydrogen ions reach the oxidizer electrode through the electrolyte in the fuel electrode and the solid polymer electrolyte membrane between the two electrodes, and react with oxygen supplied to the oxidizer electrode and electrons flowing from an external circuit to convert water. Occurs.
- the external circuit electrons flow from the fuel electrode to the oxidizer electrode, and power is extracted.
- the cell voltage of a solid polymer fuel cell having such a basic configuration corresponds to the oxidation-reduction potential difference between the electrodes
- the ideal open-circuit voltage is at most 1.23 V. is there.
- the battery output is necessarily sufficient as a drive power supply to be mounted on various devices.
- many portable electronic devices Requires an input voltage of about 1.5 to 4 V or more as a power supply, so if a polymer electrolyte fuel cell is used as the drive power supply for such portable electronic devices, the unit cell of the fuel cell Must be connected in series to increase the battery voltage.
- Japanese Patent Application Laid-Open No. Hei 8-273696 discloses a fuel cell in which a plurality of cells are incorporated on the same plane, A stack structure in which a plurality of sheets are stacked is disclosed.
- Japanese Patent Application Laid-Open Nos. Hei 8-177195 / 2002-110125 discloses that a plurality of oxidant electrodes are arranged on one surface of one electrolyte membrane.
- a fuel cell having a plurality of unit cells on the same plane by disposing a plurality of fuel electrodes on the other surface of the electrolyte membrane is disclosed.
- the above-described conventional technique can achieve a high output by electrically connecting a plurality of cells, and has a certain effect in that a sufficient power supply voltage for driving the device is obtained. I have.
- each unit cell To supply fuel and oxidizing gas separately.
- a holding mechanism that seals each unit cell is required.
- the spacing between the unit cells of the fuel cell depends on the size of the fuel and oxidizing gas supply mechanism and the holding mechanism, and it has been difficult to achieve sufficient miniaturization.
- an object of the present invention is to provide a liquid fuel supply type fuel cell having a simple structure and capable of achieving high output, miniaturization and thinning.
- a solid electrolyte membrane a solid electrolyte membrane, a plurality of fuel electrodes disposed on one surface of the solid electrolyte membrane, and a plurality of fuel electrodes disposed on the other surface of the solid electrolyte membrane.
- a plurality of unit cells comprising a fuel electrode, an oxidizer electrode, and a solid electrolyte membrane, the plurality of unit cells being electrically connected.
- a fuel cell is provided.
- the liquid fuel supply type fuel cell according to the present invention is a fuel cell that generates power while supplying liquid fuel directly to the fuel electrode.
- a direct methanol fuel cell is one form of a liquid fuel supply fuel cell.
- the liquid fuel supply type fuel cell of the present invention has a configuration in which a plurality of unit cells sharing one solid electrolyte membrane are electrically connected. For this reason, since a member for fixing the unit cells relatively to each other is not required, a fuel cell having a simple structure and high output can be realized.
- the fuel electrode is arranged on one side of the solid electrolyte membrane and the oxidant electrode is arranged on the other side, a flow path for supplying fuel or oxidant is provided for each unit cell. There is no need to provide it, and it is possible to supply fuel and oxidizer to multiple unit cells at once. Therefore, the mechanism can be simplified, and the size of the fuel cell can be reduced.
- liquid fuel supply type fuel cell in the above-mentioned liquid fuel supply type fuel cell, A conductive member penetrating through the membrane; and at least two of the plurality of unit cells are connected in series via the conductive member. This makes it possible to connect unit cells in series without increasing the projected area. Therefore, the size of the entire fuel cell can be further reduced.
- the fuel cell further includes a sealing material interposed between the conductive member and the solid electrolyte membrane. If there is a gap between the conductive member and the solid electrolyte membrane, the fuel and the oxidant are mixed and the fuel is wasted.However, the provision of the sealing material forms the conductive member and the solid electrolyte membrane. Since the gap can be completely closed, fuel consumption can be reduced.
- the surface of the conductive member is recoated with a material having an insulating property.
- hydrogen ions generated at the fuel electrode of the unit cell may move to the conductive member without going to the oxidizing electrode.
- the voltage drops as well as the electrical leakage. Therefore, by recoating the surface of the conductive member with a material having an insulating property, the movement of hydrogen ions to the conductive member can be prevented, and a voltage drop can be suppressed.
- liquid fuel supply type fuel cell it is preferable that a region having low ion conductivity is provided in a region between the unit cells of the solid electrolyte membrane.
- the size of the fuel cell can be further reduced by reducing the interval between the unit cells.
- the electric leakage occurs as described above, there is a problem that the voltage is reduced. Therefore, as described above, by providing the low ionic conductivity region in the region between the adjacent unit cells of the solid electrolyte membrane, it is possible to prevent the occurrence of electric leakage.
- the low ionic conductivity region in the present invention refers to a region where the conductivity of hydrogen ions is lower than other regions.
- the low ionic conductivity region is a solid electrolyte. It may be a region where a groove is formed in the film.
- the low ion conductive region may be a region in which a concave portion is formed in the solid electrolyte membrane.
- a low ion conductive region can be provided, and the movement of hydrogen between the unit cells via the solid electrolyte membrane can be suppressed, so that the voltage drop is effectively suppressed.
- a high output fuel cell is realized.
- the groove or the concave portion may be filled with an insulating resin.
- an insulating resin it is preferable to use any of a fluorine resin, a polyimide resin, a phenol resin, and an epoxy resin. By using these resins, the groove or the concave portion can be easily and reliably filled with the insulating resin.
- the fuel cell further includes a fuel flow channel covering two or more fuel electrodes, and a part of the partition wall of the fuel flow channel is a solid electrolyte membrane. Is provided.
- the solid electrolyte membrane is used as a part of the partition wall of the fuel flow path, so that the number of components is small and the structure is simple. For this reason, it is possible to contribute to a reduction in the size and thickness of the entire fuel cell.
- a fuel cell as described above, wherein at least two of the plurality of unit cells are connected in parallel.
- a fuel cell having a desired voltage or current value can be obtained.
- FIG. 1A and 1B are diagrams showing an embodiment of the fuel cell of the present invention.
- 2A and 2B are views showing another embodiment of the fuel cell of the present invention.
- 3A and 3B are diagrams showing still another embodiment of the fuel cell of the present invention.
- 4A and 4B are views showing still another embodiment of the fuel cell of the present invention.
- 5A and 5B are views showing still another embodiment of the fuel cell of the present invention.
- FIG. 2A is a perspective view schematically showing the structure of the fuel cell according to the embodiment of the present invention
- FIG. 2B is a sectional view taken along line AA ′ of FIG. 2A.
- the fuel electrodes (one electrode) 102 a and 102 b are arranged on one surface of one solid polymer electrolyte membrane 114, and the other of the solid polymer electrolyte membrane 114 is provided.
- the oxidizer electrodes (the other electrodes) 108a and 108b are arranged on the surface of the oxidizer.
- current collectors 120 and 121 are arranged and connected on the fuel electrodes 102a and 102b, and current collectors 122 and 123 are arranged and connected on the oxidant electrodes 108a and 108b, respectively. Further, the current collectors 121 and 122 are electrically connected by a connection electrode 124 penetrating the solid polymer electrolyte membrane 114.
- the fuel electrodes 102a and 102b and the oxidizer electrodes 108a and 108b are composed of a base and a catalyst layer (not shown).
- the fuel electrodes 102a and 102b contain fuel 125, and the oxidizer electrodes 108a and 108b contain air or oxygen.
- An oxidant 126 is provided.
- the fuel electrodes 102a and 102b of the plurality of unit cells are on the negative side with the solid polymer electrolyte membrane 114 interposed therebetween, and the oxidizer electrodes 108a and 108b are on the other side. Are arranged on the side of the vehicle. Therefore, as schematically shown in FIG.
- the fuel flow path for supplying the fuel 125 and the oxidant flow path for supplying the oxidant 126 need only be one system, thereby simplifying the structure of the fuel cell. It becomes possible.
- the solid polymer electrolyte membrane 114 since the solid polymer electrolyte membrane 114 has a role of a partition separating the fuel electrode side and the oxidant electrode side, the fuel 125 does not enter the oxidant electrode side, and 126 does not enter the anode side.
- the solid polymer electrolyte membrane 114 separates the fuel electrodes 102 a, 102 b from the oxidant electrodes 108 a, 108 b, and ion exchanges to transfer hydrogen ions between the two. It has a role as a film.
- the solid polymer electrolyte membrane 114 is preferably a membrane having high hydrogen ion conductivity. Further, it is preferable that it is chemically stable and has high mechanical strength.
- the material constituting the solid polymer electrolyte membrane 114 include an organic polymer having a polar group such as a strong acid group such as a sulfone group, a phosphate group, a phosphone group, or a phosphine group, or a weak acid group such as a carboxy group. It is preferably used.
- organic polymers include:
- Aromatic-containing polymers such as sulfonated poly (4-phenoxybenzoyl 1,4-phenylene) and alkylsulfonated polybenzimidazole;
- Copolymers such as polystyrene sulfonic acid copolymers, polyvinyl sulfonic acid copolymers, cross-linked alkyl sulfonic acid derivatives, fluorine-containing polymers composed of a fluororesin skeleton and sulfonic acid;
- Acrylamide-Acrylamides such as 2-methylpropanesulfonic acid and copolymers obtained by copolymerizing acrylates such as n-butyl methacrylate.
- Sulfone group-containing perfluorocarbon for example, Naphion (trade name) manufactured by DuPont, Aciplex (trade name) manufactured by Asahi Kasei Corporation);
- Fluoroxyl group-containing perfluorocarbon for example, Flemion s membrane manufactured by Asahi Glass Co., Ltd.
- aromatic-containing polymers such as sulfonated poly (4-phenoxybenzoyl 1,4-phenylene) and alkylsulfonated polybenzoimidazole are selected, permeation of organic liquid fuel , And a decrease in battery efficiency due to crossover can be suppressed.
- the fuel electrodes 102 a and 102 b and the oxidizer electrodes 108 a and 108 b are formed, for example, by a membrane (catalyst shoulder) containing carbon particles carrying a catalyst and fine particles of a solid polymer electrolyte.
- a configuration formed on a base (gas diffusion layer) can be employed.
- the surface of the substrate may be subjected to a water-repellent treatment, and a water-repellent agent such as polytetrafluoroethylene can be used for the water-repellent treatment of the substrate.
- Examples of the catalyst supported on the carbon particles of the fuel electrode include platinum, rhodium, palladium, iridium, osmium, ruthenium, rhenium, gold, silver, nickel, cobalt, lithium, lanthanum, strontium, and yttrium. Alternatively, two or more kinds can be used in combination.
- the catalyst supported on the carbon particles of the oxidant electrode the same catalyst as the catalyst of the fuel electrode can be used, and the above-mentioned exemplified substances can be used.
- the catalysts for the fuel electrode and the oxidant electrode may be the same or different.
- Examples of the carbon particles supporting the catalyst include acetylene black (eg, Denka Black (trade name) manufactured by Denki Kagaku Co., Ltd., XC72 (trade name) manufactured by Vulcan Co., Ltd.), Ketjen Black, carbon nanotubes, carbon nanohorn, and the like.
- the particle size of the carbon particles is, for example, 0.01 to 0.1 m, preferably 0.02 to 0.06 ⁇ m.
- an organic liquid fuel such as methanol, ethanol, and getyl ether can be used.
- the method for producing the fuel electrodes 102a and 102b and the oxidant electrodes 108a and 108b is not particularly limited, but can be produced, for example, as follows.
- the support of the catalyst by the carbon particles of the fuel electrodes 102a and 102b and the oxidizer electrodes 108a and 108b can be performed by a generally used impregnation method. Then, the carbon particles carrying the catalyst and the solid polymer electrolyte particles are dispersed in a solvent to form a paste, which is then applied to a substrate and dried to obtain the fuel electrodes 102a and 102b and the oxidized fuel. Drug electrodes 108a and 108b can be obtained.
- the particle size of the carbon particles is, for example, 0.01 to 0.1 / m.
- the particle size of the catalyst particles is, for example, 1 nm to 1 Onm.
- the particle size of the solid polymer electrolyte particles is, for example, 0.05 to 1 / m.
- carbon particles and solid polymer electrolyte particles The weight ratio is used in the range of 2: "! To 40: 1.
- the weight ratio of water to solute in the paste is, for example, about 1: 2 to 10: 1.
- a method such as brush coating, spray coating, and screen printing can be used.
- the paste has a thickness of about 1 jur!
- the heating temperature and the heating time are appropriately selected depending on the material used, but, for example, the heating temperature is 100 ° C. to 250 ° C., and the heating time is 30 seconds. It can be up to 30 minutes.
- the solid polymer electrolyte membrane 114 can be manufactured by using an appropriate method according to the material to be used. For example, when the solid polymer electrolyte membrane 114 is composed of an organic polymer material, a liquid obtained by dissolving or dispersing the organic polymer material in a solvent is cast on a peelable sheet such as polytetrafluoroethylene. And dried.
- connection electrode 124 is provided so as to penetrate the solid polymer electrolyte membrane 114.
- the connection electrode 124 is a conductive member for electrically connecting current collectors 120 and 123 described later.
- the connection electrodes 124 can penetrate, for example, through holes provided in advance in the solid polymer electrolyte membrane 114. Further, the connecting electrode 124 may be directly pierced into the solid polymer electrolyte membrane to penetrate the solid polymer electrolyte membrane 114 while providing the through hole without forming a through hole in the solid polymer electrolyte membrane 114 in advance.
- a sealing material having a hole with a diameter slightly smaller than the through hole 30 6 is placed on the through-hole with the hole and the through-hole aligned, and the connection electrode 124 is placed on the sealing material 303. You can also let them know. This makes it possible to completely close the gap between the through hole and the connection electrode 124.
- the sealing material 306 for example, a film made of tetrafluoroethylene resin / a film made of silicon can be used.
- the solid polymer electrolyte membrane 114 produced in this manner was used as a fuel electrode 102 a, It is sandwiched between 2b and the oxidizer electrodes 108a and 108b, and hot pressed to obtain an electrode-electrolyte assembly. At this time, the surfaces of both electrodes (the fuel electrodes 102a and 102b and the oxidizer electrodes 108a and 108b) on which the catalysts are provided are in contact with the solid electrolyte membrane 114.
- the hot pressing conditions are selected according to the material, but the electrolyte on the surface of the solid electrolyte membrane 114 and the electrodes (fuel electrodes 102a and 102b and oxidant electrodes 108a and 108b) is made of organic electrolyte. When composed of molecules, it can be carried out at a temperature exceeding the softening temperature of these organic polymers divided by the glass transition temperature. Specifically, for example, hot pressing is performed under the conditions of a temperature of 100 to 250 ° C., a pressure of “! To 100 kgcm 2 , and a time of 10 to 300 seconds.
- the electrode-electrolyte assembly obtained as described above is sandwiched between current collectors 120 to 123.
- a current collector 122 connected to and connected to the fuel electrode 102 b and a oxidizer electrode 108 a by a connection electrode 124 passing through the solid polymer electrolyte membrane 114.
- the connected current collector 122 is electrically connected.
- the connection method between the connection electrode 124 and the current collectors 120 and 123 is not particularly limited.For example, the connection is made by caulking the connection electrode 124 and the current collector 120 or the current collector 123, Alternatively, they can be connected by welding.
- the current collectors 120 to 123 and the connection electrode 124 are conductive members, and can be formed of, for example, stainless steel or titanium.
- the unit cells are arranged close to each other to save space, thereby achieving high-density mounting. realizable.
- the hydrogen ions generated at the fuel electrode of a certain unit cell are not adjacent to the oxidant electrode of the unit cell but to the adjacent oxidizer electrode.
- a so-called electrical leak that moves to the oxidizer electrode of the unit cell may occur.
- Such moving hydrogen ions cause a voltage drop. Therefore, in the present embodiment, in order to prevent the electric leakage, as shown in FIGS.
- FIG. 3A is a perspective view of an embodiment in which a concave portion 303 is provided
- FIG. 3B is a cross-sectional view taken along line AA ′.
- the ion conductivity in which the hydrogen ions generated at the fuel electrode 102 a move to the oxidizer electrode 108 b of the adjacent unit cell can be obtained. Can be reduced. As a result, electric leakage can be suppressed, and the hydrogen ions generated at the fuel electrode 102a can be effectively led to the oxidizer electrode 108a.
- FIGS. 4A, 4B, 5A, and 5B Such a configuration is shown in FIGS. 4A, 4B, 5A, and 5B.
- FIG. 4A is a perspective view of the embodiment in which the insulating film 304 is sandwiched in the groove 302, and FIG. 4B is a cross-sectional view along the line AA ′.
- FIG. 5A is a perspective view of an embodiment in which the concave portion 303 is filled with the insulating resin 305
- FIG. 5B is a cross-sectional view taken along line AA ′.
- a fluorine resin, a polyimide resin, a phenol resin, an epoxy resin, or the like can be used as a material of the insulating film 304 and the insulating resin 305.
- connection electrodes 124 Electric leakage also occurs when hydrogen ions move to the connection electrodes 124.
- a material having an insulating property for example, silicon, polytetrafluoroethylene, polyethylene, and polyimide-based materials are used, and these materials can be coated using, for example, a vapor deposition method.
- the insulating material for example, silicon, polytetrafluoroethylene, polyethylene, and polyimide-based materials are used, and these materials can be coated using, for example, a vapor deposition method.
- the interval between unit cells of the fuel cell is set to be equal to or less than the thickness of the solid polymer electrolyte membrane 114. Therefore, it is possible to realize a very high-density mounting.
- Embodiment 1 of the present invention will be described with reference to FIGS. 1A and 1B.
- Example 1 a platinum (Pt) -ruthenium (Ru) alloy having a particle diameter of 3 to 5 nm was used as a catalyst, and this catalyst was added to carbon fine particles (Denka Black manufactured by Denki Kagaku Co., Ltd .: trade name) at a weight ratio of 50%.
- the catalyst-supported carbon fine particles supported only by the catalyst were used.
- the alloy composition was 50 at% Ru, and the weight ratio between the alloy and the carbon fine powder was 1: 1. 1 g of the catalyst-supporting carbon fine particles was added to 18 ml of a 5 wt 0/0 naphion solution manufactured by Aldrich Chemical Co., Ltd.
- a through hole through which a connection electrode 124 described later was inserted was provided in a solid polymer electrolyte membrane 114 having a thickness of 150 m made of Naphion manufactured by DuPont. Then, the four electrodes produced as described above are thermocompression-bonded at 120 ° C. to both surfaces of the solid polymer electrolyte membrane 114, two at a time, and the fuel electrodes 102a and 102b and the oxidizing agent The poles were 108a and 108b. Thus, two unit cells were created. The distance between these two unit cells was 2.5 mm.
- connection electrode 124 which is a stainless steel M2 bolt coated with tetrafluoroethylene resin, is passed through a through hole provided in the solid polymer electrolyte membrane 114.
- the current collector 122 and the current collector 122 were connected in series by the connection electrode 124.
- the connection electrode 124 was passed through with the sealing material 306 placed on the through-hole, and the through-hole was completely closed as shown in the figure.
- a fuel container made of tetrafluoroethylene resin was attached to the fuel electrode 102a, 102b side of the solid polymer electrolyte membrane 114.
- the fuel electrodes 102a and 102b were covered with this fuel container, and were sealed with the solid polymer electrolyte membrane 114 and this fuel container.
- a 10% aqueous methanol solution was introduced into the fuel cell thus manufactured at a flow rate of 2 ml / min, and the outside was exposed to the atmosphere to measure the cell characteristics.
- the battery voltage was 0.9 V at a current density of 10 OmA cm 2 . This voltage is equivalent to twice the cell voltage of a single fuel cell composed of only one unit cell.
- Example 2 shown in FIGS. 2A and 2B, the four electrodes prepared in the same manner as in Example 1 were thermocompression-bonded to both sides of one solid polymer electrolyte membrane 114, and the fuel Two unit cells were created for poles 102a, 102b and oxidizer poles 108a, 108b. However, the interval between these two unit cells was 0.2 mm, and a groove 302 having a width of 0.05 mm and a depth of 0.1 mm was provided between the two unit cells.
- connection electrode 124 which is a 0.05 mm-diameter gold wire recoated with a titanium resin, is inserted through the solid polymer electrolyte membrane 114, and the current collector 1 21 and the current collector 122 were connected in series. The connection was made by thermocompression using ultrasonic vibration. Then, a fuel container (not shown) was attached to the solid polymer electrolyte membrane 114 on the side of the fuel electrodes 102a and 102b.
- Example 2 Also for the fuel cell of Example 2, a 10% methanol aqueous solution was flowed into the fuel cell at a flow rate of 2 mI ⁇ ⁇ , and the outside was exposed to the atmosphere to measure the cell characteristics. As a result, as shown in Table 1, the battery voltage at a current density of 10 OmAZcm 2 was 0.87 V. This voltage is close to twice the cell voltage of a single fuel cell consisting of only one unit cell. In Example 2, despite the small spacing between the unit cells, electrical leakage was considerably suppressed. It turns out that there is.
- the groove 302 is provided on the right side of the connection electrode 124 has been described.
- the groove 302 may be provided on the left side of the connection electrode 124.
- a form in which the connection electrode 124 penetrates the groove 302 may be adopted.
- Embodiment 3 shown in FIGS. 4A and 4B has the same configuration as Embodiment 2, except that the groove 302 provided in the solid polymer electrolyte membrane 114 is provided with an insulating film 304 made of polyimide (Kapton (registered trademark) manufactured by DuPont). (Trademark)).
- Other configurations are the same as those of the second embodiment, and are manufactured by the same method as that of the second embodiment.
- Example 3 Also for the fuel cell of Example 3, a 10% aqueous methanol solution was introduced at a flow rate of 2 ml / min into the inside, and the outside was exposed to the atmosphere to measure the cell characteristics. As a result, as shown in Table 1, the battery voltage at a current density of 10 OmA cm 2 was 0.9 V. This voltage is higher than the battery voltage of the second embodiment, and is equivalent to twice the battery voltage of a single fuel cell comprising only one unit cell.In the second embodiment, electric leakage is almost suppressed. It turns out that there is.
- the groove 302 is provided on the right side of the connection electrode 124 has been described, but the groove 302 may be provided on the left side of the connection electrode 124. Also, A configuration in which the connection electrode 124 penetrates the groove 302 may be adopted.
- Comparative Example 1 a fuel cell having the same configuration as in Example 2 was manufactured by the same manufacturing method as in Example 2, except that the groove portion 302 was not provided in the polymer electrolyte membrane 114. .
- the distance between the two unit cells is 0.2 mm, unlike the first embodiment, as in the second embodiment.
- Example 4 shown in FIGS.3A and 3B has the same configuration as that of Example 2 except that the solid polymer electrolyte membrane 114 has a diameter of 0.1 mm and a depth of 0.1 mm instead of the groove 302. It has a configuration in which a plurality of 1 mm concave portions 303 are provided. Other configurations are the same as those of the second embodiment, and are manufactured by the same method as that of the second embodiment.
- Example 4 Also in the fuel cell of Example 4, a 10% aqueous methanol solution was introduced at 2 ml / xrx ⁇ n into the inside of the fuel cell fabricated in this manner, and the outside was exposed to the atmosphere. The properties were measured. As a result, as shown in Table 1, the battery voltage at a current density of 1 O OmAZcm 2 was 0.85 V. This voltage is smaller than twice the cell voltage of a single fuel cell composed of only one unit cell, but larger than that of Comparative Example 1, indicating that the electric leakage is suppressed to some extent.
- the concave portion 303 may be provided on the left side of the connection electrode 124. Further, a form in which the connection electrode 124 penetrates the concave portion 303 can be adopted.
- Example 5 shown in FIGS. 5A and 5B has a configuration similar to that of Example 4, except that the solid polymer In this configuration, a concave portion 303 provided in the electrolyte membrane 114 is filled with an insulating resin 304 (epoxy resin).
- insulating resin 304 epoxy resin
- Other configurations are the same as in the fourth embodiment, and are manufactured by the same method as in the second to fourth embodiments.
- Example 5 Also with respect to the fuel cell of Example 5, a 100/0 methanol aqueous solution was flowed therein at a flow rate of 2 mI / m ⁇ n, and the outside was exposed to the atmosphere to measure the cell characteristics. As a result, shown as Table 1, the battery voltage at a current density of 1 0 O m A cm 2 was 0. 9 V. This voltage is higher than the battery voltage of the fourth embodiment, and is equivalent to twice the battery voltage of a single fuel cell including only one unit cell.In the fifth embodiment, electric leakage is almost suppressed. I understand.
- Comparative Example 1 the distance between the two unit cells was reduced to about the same as the thickness of the solid polymer electrolyte membrane (0.2 mm), so that the fuel cell could be downsized. In Comparative Example 1, electrical leakage is remarkable, and a voltage drop occurs.
- Example 1 by securing a wide interval between the two unit cells, almost no electric leakage occurred, and good results were obtained.
- the spacing between unit cells is as wide as 3 mm.
- Example 2 the electric leakage significantly generated in Comparative Example 1 could be suppressed by the groove 302 provided in the solid polymer electrolyte membrane 114, and as a result, two unit cells were formed.
- the gap can be reduced to about the same as the thickness of the solid polymer electrolyte membrane (0.2 mm), and a large cell voltage can be obtained while miniaturizing the fuel cell.
- the occurrence of electric leakage can be further suppressed by the insulating film 304, and a higher battery voltage than in the second embodiment can be obtained.
- the distance between the two unit cells is narrow, and the size of the fuel cell can be reduced.
- Example 4 similarly to Example 2, the electric leak significantly generated in Comparative Example 1 can be suppressed by the concave portion 303 provided in the solid polymer electrolyte membrane 114. As a result, a large battery voltage was obtained while reducing the size of the fuel cell by narrowing the space between the two unit cells to about the same as the thickness of the polymer electrolyte membrane (0.2 mm). Can be
- the occurrence of electric leakage can be further suppressed by the insulating resin 305, and a higher battery voltage can be obtained than in the fourth embodiment.
- the distance between the two unit cells is narrow, and the fuel cell can be downsized.
- the batteries of Examples 2 to 5 can obtain a large battery voltage, and can be mounted at a very high density with a unit cell interval of 0.2 mm.
- the configuration in which the two unit cells are electrically connected in series is shown.
- the same configuration is used to connect the fuel electrodes (or oxidizer electrodes) of the two unit cells to each other. By doing so, it is possible to connect them electrically in parallel.
- the battery voltage is about 0.9 V, which cannot be said to be large enough as a driving power supply for portable equipment.
- the voltage or current is increased by increasing the number of unit cells to be electrically connected. Can be increased. Further, the battery output can be adjusted by appropriately selecting the connection method.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020047019901A KR100656632B1 (ko) | 2002-06-07 | 2003-05-30 | 액체 연료 공급형 연료전지 |
CA002488165A CA2488165A1 (en) | 2002-06-07 | 2003-05-30 | A planar multiple fuel cell structure |
EP03730701A EP1515387A4 (en) | 2002-06-07 | 2003-05-30 | LIQUID FUEL SUPPLY TYPE FUEL CELL |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002166884A JP3693039B2 (ja) | 2002-06-07 | 2002-06-07 | 液体燃料供給型燃料電池 |
JP2002-166884 | 2002-06-07 |
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WO2003105265A1 true WO2003105265A1 (ja) | 2003-12-18 |
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PCT/JP2003/006802 WO2003105265A1 (ja) | 2002-06-07 | 2003-05-30 | 液体燃料供給型燃料電池 |
Country Status (8)
Country | Link |
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US (1) | US7115337B2 (ja) |
EP (1) | EP1515387A4 (ja) |
JP (1) | JP3693039B2 (ja) |
KR (1) | KR100656632B1 (ja) |
CN (1) | CN1310367C (ja) |
CA (1) | CA2488165A1 (ja) |
TW (1) | TWI222236B (ja) |
WO (1) | WO2003105265A1 (ja) |
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WO2005045970A1 (ja) * | 2003-11-06 | 2005-05-19 | Nec Corporation | 燃料電池およびその製造方法 |
US11109587B2 (en) | 2014-10-20 | 2021-09-07 | Arysta Lifescience Benelux Sprl | Limonene: formulation and insecticide use |
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JP4042526B2 (ja) | 2002-10-22 | 2008-02-06 | 株式会社日立製作所 | シート状電解質膜電極接合複合体及びそれを用いた燃料電池 |
US7638219B2 (en) | 2003-03-07 | 2009-12-29 | Honda Motor Co., Ltd. | Fuel cell without Z-like connection plates and the method producing the same |
FR2880994B1 (fr) * | 2005-01-17 | 2010-08-20 | Pierre Forte | Convertisseur electrochimique compact |
KR101223559B1 (ko) * | 2005-06-24 | 2013-01-22 | 삼성에스디아이 주식회사 | 연료 전지용 고분자 전해질 막의 제조 방법 |
JP4913469B2 (ja) * | 2005-06-29 | 2012-04-11 | アイシン高丘株式会社 | 燃料電池スタック及びターミナルプレートの製造方法 |
JP2007122960A (ja) * | 2005-10-26 | 2007-05-17 | Toshiba Corp | 燃料電池 |
KR20070103569A (ko) * | 2006-04-19 | 2007-10-24 | 삼성에스디아이 주식회사 | 직접 산화형 연료 전지용 막-전극 어셈블리 및 이를포함하는 직접 산화형 연료 전지 시스템 |
CA2552282A1 (fr) * | 2006-07-18 | 2008-01-18 | Hydro Quebec | Materiau multi-couches a base de lithium vif, procedes de preparation et applications dans les generateurs electrochimiques |
JP5111869B2 (ja) * | 2007-01-18 | 2013-01-09 | 三菱マテリアル株式会社 | 燃料電池 |
CA2624336C (en) * | 2007-03-09 | 2014-06-17 | Sanyo Electric Co., Ltd. | Membrane electrode assembly, method for manufacturing the same, and fuel cell including the same |
CN101345312B (zh) * | 2007-07-10 | 2011-06-29 | 纬创资通股份有限公司 | 燃料电池的连接结构 |
BR112012015970A2 (pt) | 2009-12-28 | 2019-09-24 | SOCIéTé BIC | compósito para uma camada de combustível, célula de combustível e camada de célula de combustível |
FR2963483B1 (fr) | 2010-07-27 | 2012-09-07 | Commissariat Energie Atomique | Pile a combustible comportant une pluralite de cellules elementaires connectees en serie et son procede de realisation |
KR20150010693A (ko) * | 2011-11-18 | 2015-01-28 | 소시에떼 비아이씨 | 연료전지층의 형성방법 |
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Cited By (3)
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WO2005045970A1 (ja) * | 2003-11-06 | 2005-05-19 | Nec Corporation | 燃料電池およびその製造方法 |
JP4860264B2 (ja) * | 2003-11-06 | 2012-01-25 | 日本電気株式会社 | 燃料電池およびその製造方法 |
US11109587B2 (en) | 2014-10-20 | 2021-09-07 | Arysta Lifescience Benelux Sprl | Limonene: formulation and insecticide use |
Also Published As
Publication number | Publication date |
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EP1515387A4 (en) | 2009-12-23 |
KR20040111731A (ko) | 2004-12-31 |
US20040219412A1 (en) | 2004-11-04 |
JP3693039B2 (ja) | 2005-09-07 |
CA2488165A1 (en) | 2003-12-18 |
EP1515387A1 (en) | 2005-03-16 |
CN1659736A (zh) | 2005-08-24 |
KR100656632B1 (ko) | 2006-12-11 |
US7115337B2 (en) | 2006-10-03 |
CN1310367C (zh) | 2007-04-11 |
JP2004014322A (ja) | 2004-01-15 |
TW200401468A (en) | 2004-01-16 |
TWI222236B (en) | 2004-10-11 |
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