+

WO2012008266A1 - Pile à combustible - Google Patents

Pile à combustible Download PDF

Info

Publication number
WO2012008266A1
WO2012008266A1 PCT/JP2011/063899 JP2011063899W WO2012008266A1 WO 2012008266 A1 WO2012008266 A1 WO 2012008266A1 JP 2011063899 W JP2011063899 W JP 2011063899W WO 2012008266 A1 WO2012008266 A1 WO 2012008266A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
fuel cell
supply unit
electrode
oxidant
Prior art date
Application number
PCT/JP2011/063899
Other languages
English (en)
Japanese (ja)
Inventor
寛子 大森
暢久 石田
Original Assignee
コニカミノルタホールディングス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by コニカミノルタホールディングス株式会社 filed Critical コニカミノルタホールディングス株式会社
Priority to JP2012524503A priority Critical patent/JP5516735B2/ja
Publication of WO2012008266A1 publication Critical patent/WO2012008266A1/fr

Links

Images

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
    • H01M8/10—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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
    • H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
    • 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • H01M8/04216—Reactant storage and supply, e.g. means for feeding, pipes characterised by the choice for a specific material, e.g. carbon, hydride, absorbent
    • 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
    • H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
    • 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04701—Temperature
    • 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
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
    • H01M8/2425—High-temperature cells with solid electrolytes
    • H01M8/2432—Grouping of unit cells of planar configuration
    • 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
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • H01M8/2475—Enclosures, casings or containers of fuel cell stacks
    • 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
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/065—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by dissolution of metals or alloys; by dehydriding metallic substances
    • 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.
  • Hydrogen which is mainly used as fuel in fuel cells, has been attracting attention as a clean energy that can replace fossil fuels, which are currently being depleted, and has the potential to contribute to the protection of the global environment and the establishment of a recycling-oriented society. ing.
  • a fuel cell typically includes a solid polymer electrolyte membrane using a solid polymer ion exchange membrane, a solid oxide electrolyte membrane using yttria-stabilized zirconia (YSZ), etc. as a fuel electrode (anode) and an oxidizer electrode (A fuel supply mechanism that supplies fuel gas (for example, hydrogen gas) to the fuel electrode and an oxidant supply mechanism that supplies oxidant gas (for example, oxygen or air) to the oxidant electrode. is necessary.
  • a space that functions as a fluid flow path for fuel gas is provided, the space serves as a fuel supply mechanism, a space that functions as a fluid flow path for oxidant gas is provided, and the space serves as an oxidant supply mechanism. It has become.
  • an object of the present invention is to provide a fuel cell excellent in mechanical strength.
  • a fuel cell according to the present invention provides a fuel electrode, an oxidant electrode, an electrolyte sandwiched between the fuel electrode and the oxidant electrode, and supplies fuel to the fuel electrode.
  • an oxidant supply unit that supplies an oxidant to the oxidant electrode, and the fuel electrode, the oxidant electrode, the electrolyte, the fuel supply unit, and the oxidant supply unit are all solid.
  • the structure is a structure.
  • a fuel cell according to the present invention includes a fuel electrode, an oxidant electrode, an electrolyte sandwiched between the fuel electrode and the oxidant electrode, a fuel supply unit that supplies fuel to the fuel electrode, An oxidant supply unit that supplies an oxidant to the oxidant electrode, and the fuel electrode, the oxidant electrode, the electrolyte, the fuel supply unit, and the oxidant supply unit all have a solid structure. According to such a configuration, since a large space does not exist inside the fuel cell, the mechanical strength is improved.
  • the fuel cell device according to the first embodiment of the present invention includes an electrolyte membrane 1, a fuel electrode 2, an oxidant electrode 3, a fuel supply unit 4, an oxidant supply unit 5, A heater 6, a temperature sensor 7, and a cover member 8 are provided.
  • the fuel cell device according to the first embodiment of the present invention has an MEA (Membrane Electrode Assembly) structure in which a fuel electrode 2 and an oxidant electrode 3 are bonded to both surfaces of an electrolyte membrane 1.
  • MEA Membrane Electrode Assembly
  • a fuel supply unit 4 having a solid structure is provided on the fuel electrode 2 side, and an oxidant supply unit 5 having a solid structure is provided on the oxidant electrode 3 side.
  • air is used as the oxidant gas, but a gas containing oxygen other than air can also be used as the oxidant gas.
  • hydrogen is used as the fuel, but methanol or the like can also be used.
  • the electrolyte membrane 1, the fuel electrode 2, the oxidant electrode 3, the fuel supply unit 4, and the oxidant supply unit 5 are all made of a solid structure so that there is no large space inside the fuel cell, thus improving the mechanical strength. To do. FIG.
  • FIG. 1 is a cross-sectional view of a fuel cell device, in which an electrolyte membrane 1, a fuel electrode 2, an oxidant electrode 3, a fuel supply unit 4, and an oxidant supply unit 5 are arranged such that opposing surfaces extending in the depth direction of the paper are in contact with each other.
  • an electrolyte membrane 1 a fuel electrode 2, an oxidant electrode 3, a fuel supply unit 4, and an oxidant supply unit 5 are arranged such that opposing surfaces extending in the depth direction of the paper are in contact with each other.
  • the contact surfaces of the fuel electrode 2 and the fuel supply unit 4 and the oxidant electrode 3 and the oxidant supply unit 5 do not necessarily have to be completely joined or in close contact with each other. May be.
  • a solid oxide electrolyte using yttria-stabilized zirconia can be used as the material of the electrolyte membrane 1.
  • YSZ yttria-stabilized zirconia
  • Nafion trademark of DuPont
  • cationic conductive polymer cationic conductive polymer
  • anionic conductive polymer Solid polymer electrolytes such as, but not limited to, those that pass hydrogen ions, those that pass oxygen ions, those that pass hydroxide ions and carbonate ions, etc. Any material satisfying the characteristics as an electrolyte may be used.
  • the electrolyte membrane 1 can be formed using an electrochemical vapor deposition method (CVD-EVD method; Chemical Vapor Deposition-Electrochemical Vapor Deposition) or the like, and in the case of a solid polymer electrolyte. If there is, it can be formed using a coating method or the like.
  • CVD-EVD method Chemical Vapor Deposition-Electrochemical Vapor Deposition
  • Each of the fuel electrode 2 and the oxidant electrode 3 can be constituted by, for example, a catalyst layer in contact with the electrolyte membrane 1 and a diffusion electrode laminated on the catalyst layer.
  • the catalyst layer for example, platinum black or a platinum alloy supported on carbon black can be used.
  • the material of the diffusion electrode of the fuel electrode 2 for example, carbon paper, Ni—Fe cermet, Ni—YSZ cermet and the like can be used.
  • the material of the diffusion electrode of the oxidizer electrode 3 for example, carbon paper, La—Mn—O-based compound, La—Co—Ce-based compound, or the like can be used.
  • the fuel electrode 2 and the oxidant electrode 3 can be formed by using, for example, a vapor deposition method.
  • the heater 6 is formed on the entire surface of the fuel supply unit 4 (excluding the contact surface with the fuel electrode 2, that is, the discharge surface for releasing generated hydrogen) and the entire surface of the oxidant supply unit 5 (contact surface with the oxidant electrode 3, (Except for the supply surface for supplying the oxidant gas).
  • the fuel cell system including the fuel cell according to the first embodiment of the present invention includes a temperature control unit 20 that controls the heater 6 based on the output signal of the temperature sensor 7.
  • the temperature detection unit 201 of the temperature control unit 20 detects the temperature based on the output signal of the temperature sensor 7.
  • the determination unit 202 controls on / off of the heater 6 by the switch unit 203 based on the detection result of the temperature detection unit 201 and controls heating by the heater 6.
  • the cover member 8 is a container having a heat insulating structure for covering all other components of the fuel cell, and on the oxidant electrode 3 side, an air supply port 9 for supplying air to the oxidant supply unit 5 and surplus An air discharge port 10 for discharging air is provided. Similarly, an air supply port 9 and an air discharge port 10 are provided on the oxidant electrode 3 side of the heater 6. By passing air from the air supply port 9 through the oxidant supply unit 5, air is distributed and supplied to the entire oxidant electrode 3. An open / close valve (not shown) is installed in each of the air supply port 9 and the air discharge port 10 so that each of the air supply port 9 and the air discharge port 10 can be shut off.
  • a hydrogen generating member is used for the fuel supply unit 4.
  • the hydrogen generating member is one that generates hydrogen by a chemical reaction (for example, an oxidation reaction) or one that can desorb hydrogen by a molecular structure.
  • a chemical reaction for example, an oxidation reaction
  • metal fine particles selected from Al, Fe, and Mg are used. Examples thereof include a mixture of seeds or more, a carbon nanotube, or a hydride represented by the general formula MH 4-n (such as NH 3 BH 3 ).
  • the fuel cell has a hydrogen generation source, so that it is not necessary to supply hydrogen from the outside. Further, since hydrogen is generated by an oxidation reaction, the hydrogen generating member can be regenerated by a reduction reaction. Therefore, the fuel cell can be used as a secondary battery.
  • the hydrogen generating member used as the fuel supply unit 4 is:
  • a metal fine particle selected from Al, Fe, and Mg is preferably one kind or a mixture of two or more kinds. Among such a mixture, metal fine particles containing Fe are particularly preferable. Fe requires less energy than Al and Mg, and is easy to use because it exists in nature in the form of iron oxide.
  • Fe fine particles that generate hydrogen by an oxidation reaction are used.
  • a compression molded body of Fe fine particles can be used as the hydrogen generating member.
  • Fe fine particles are crushed and embrittled by hydrogenation to form microcracks to increase the surface area, before or after compression molding, It is desirable to coat a catalyst or an additive (for example, with SiO 2 ) using an ALD (Atomic Layer Deposition) method or an LPD (Liquid Phase Deposition) method.
  • ALD Atomic Layer Deposition
  • LPD Liquid Phase Deposition
  • the fuel supply unit 4 may be anything as long as it has a solid structure. For example, even if it is a structure in which powder is filled in a space surrounded by the fuel electrode 2 and the heater 6, it has a solid structure having resistance to stress as a whole. It only has to be.
  • the fuel supply unit 4 is preferably formed by coating, powder compression, screen printing, vapor deposition, or the like. However, in order to improve the mechanical strength against stress, it is preferably a fine particle compression molded body as in this embodiment. Compressing increases strength and makes it easier to handle. In addition, it is good to add a baking process as needed.
  • the solid structure referred to in the present embodiment does not mean that there is no space in the solid structure, but may be a porous structure, for example.
  • an inert member having poor reactivity with the fuel may be provided between the hydrogen generating member and the fuel electrode 2.
  • an inert member having poor reactivity with oxygen is used for the oxidant supply unit 5.
  • a metal having poor reactivity with oxygen a ceramic, a cermet, a nitrogen-enriched film, or the like is preferable, and a metal having poor reactivity with oxygen is particularly preferable.
  • a metal having poor reactivity with oxygen it is preferable to use a material having good thermal conductivity such as Ti or Al.
  • a nitrogen-rich film it is preferable to use a silicone film, a silicone polycarbonate film, a zeolite adsorption film, or the like.
  • the oxidant supply unit 5 may be anything as long as it has a solid structure.
  • the powder is supplied from the air supply port 9 or the air discharge port 10.
  • it may be a structure having a mechanism that does not leak, it is preferably a porous membrane that allows oxygen to pass through.
  • the oxidant supply unit 5 is preferably formed by coating, powder compression, screen printing, vapor deposition, or the like. In addition, it is good to add a baking process as needed.
  • the inside of the fuel cell is heated to the required temperature by the heater 6, and as shown in FIG. 1B, the air supply port 9 is opened and air is supplied from the air supply port 9 to the oxidant supply unit 5.
  • the fuel electrode 2 ionizes the hydrogen (H 2 ) enclosed in the fuel supply unit 4 and the oxidant electrode 3 and passes through the electrolyte membrane 1.
  • the reaction shown in the following chemical reaction formula (1) occurs with oxygen ions (O 2 ⁇ ), and electrons (e ⁇ ) are generated and accumulated. That is, an electromotive force is generated in the fuel cell, and a power generation operation is started.
  • water (H 2 O) is generated at the fuel electrode 2 as shown in the chemical reaction formula (1).
  • the generated water (H 2 O) is supplied to the inside of the fuel supply unit 4 (in this embodiment, inside the compression molded body of Fe fine particles), and the fuel supply unit 4 uses the supplied water (H 2 O) to An oxidation reaction shown in chemical reaction formula (2) occurs, and hydrogen (H 2 ) is generated by the oxidation reaction.
  • the generated hydrogen (H 2 ) is supplied to the fuel electrode 2, and the fuel electrode 2 circulates such that water (H 2 O) is generated again by oxidizing the supplied hydrogen (H 2 ) and generating electric power.
  • the power generation operation is sustained. Therefore, it is not necessary to discharge water (H 2 O) to the outside of the fuel cell. 4H 2 O + 3Fe ⁇ 4H 2 + Fe 3 O 4 (2)
  • the fuel supply unit 4 is changed to iron oxide (Fe 3 O 4 ) by oxidation of iron (Fe), and the ratio of iron (Fe) in the fuel supply unit 4 gradually decreases. To go.
  • the hydrogen (H 2 ) generated in the fuel electrode 2 is supplied to the fuel supply unit 4, and the reduction reaction shown in the following chemical reaction formula (4) is performed in the fuel supply unit 4 by the supplied hydrogen (H 2 ).
  • the iron oxide (Fe 3 O 4 ) in the fuel supply unit 4 is reduced to change to iron (Fe), and the proportion of iron (Fe) in the fuel supply unit 4 gradually increases.
  • the supply unit 4 is regenerated. 4H 2 + Fe 3 O 4 ⁇ 4H 2 O + 3Fe (4)
  • water (H 2 O) is generated in the fuel supply unit 4.
  • the generated water (H 2 O) is supplied to the fuel electrode 2, and in the fuel electrode 2, hydrogen (H 2 ) is generated again by electrolyzing the supplied water (H 2 O). It becomes a usage form and the playback operation is continued. Therefore, it is not necessary to discharge water (H 2 O) to the outside of the fuel cell.
  • an electrolyte that passes oxygen ions is used as the electrolyte membrane 1.
  • Water is generated on the fuel electrode 2 side during power generation operation, and this water is reacted with the adjacent fuel supply unit 4. As a result, hydrogen is generated. Further, during the reduction operation, the oxidized fuel supply unit 4 is reacted with hydrogen generated by decomposing water and reduced.
  • the device can be simplified and downsized. Further, since the fuel supply unit 4 that has undergone oxidation can be reduced and regenerated and reused, there is no need to take out the fuel supply unit 4 and replace it with a new one.
  • each part corresponding to the fuel electrode, oxidant electrode, electrolyte, fuel supply unit, and oxidant supply unit of the fuel cell can have a solid structure.
  • the mechanical strength of the fuel cell can be improved.
  • FIG. 2 A schematic configuration of a fuel cell according to a second embodiment of the present invention will be described with reference to FIG.
  • FIG. 2 the fuel cell which concerns on 2nd Embodiment of this invention is shown with the cross-sectional schematic diagram.
  • FIG. 2 the same parts as those in FIG. 2A shows the state before the power generation operation
  • FIG. 2B shows the power generation operation state
  • FIG. 2C shows the power generation operation stop state
  • the difference between the fuel cell according to the second embodiment of the present invention and the fuel cell according to the first embodiment of the present invention is that the fuel cell according to the first embodiment of the present invention has an air supply port 9 and an air discharge port 10.
  • the fuel cell according to the second embodiment of the present invention does not include these, and the fuel cell according to the first embodiment of the present invention provides oxygen to the oxidant supply unit 5.
  • the fuel cell according to the second embodiment of the present invention uses the oxidant supply unit 5 in the oxygen storage member 5A and the lack of insulating property with poor reactivity with oxygen.
  • the active member 5B is used.
  • the oxidant supply unit 5 is configured to include the oxygen storage member in this way, the fuel cell has an oxygen generation source, so that supply of oxidant from the outside is not necessary.
  • the oxygen storage member 5A for example, an oxygen storage alloy proposed in Japanese Patent Application Laid-Open No. 2007-15903, that is, containing ZnO as a main component and Bi 2 O 3 as an additive, a depletion layer of ZnO particles, and Bi 2 O It is possible to use an oxygen storage alloy that is composed of three grain boundary layers and that releases oxygen when voltage is applied and absorbs oxygen when no voltage is applied.
  • an insulating inactive member 5B having poor reactivity with oxygen is provided between the oxidant electrode 3 and the oxygen storage member 5A.
  • the oxidant electrode 3 and the oxygen storage member 5A are electrically insulated. Therefore, as the oxygen storage member 5A, an oxygen storage alloy in which the release and absorption of oxygen are switched depending on whether voltage is applied or not is used. When used, even if a current flows through the oxidizer electrode 3, the oxygen storage member 5A is not affected by this, and oxygen release and absorption switching control can be easily performed independently.
  • the oxygen storage member 5A is an oxygen storage alloy in which the release and absorption of oxygen are switched depending on the presence or absence of voltage application, in the power generation operation state shown in FIG. 2 (b), according to the second embodiment of the present invention.
  • a voltage is applied to the oxygen storage member 5A by the voltage application unit 15 provided in the fuel cell system including the fuel cell so that no voltage is applied to the oxygen storage member 5A in the regeneration operation state shown in FIG. To do.
  • the insulating property having poor reactivity with oxygen may be omitted.
  • the voltage is not applied to the oxygen storage member 5A by making the oxidant electrode 3 and the oxygen storage member 5A have the same potential. Can be.
  • the fuel cell according to the second embodiment of the present invention has a solid structure in the fuel supply unit 4 and the oxidant supply unit 5, and there is a large space inside the fuel cell. Therefore, the mechanical strength is improved.
  • FIG. 3 shows a state before the power generation operation
  • FIG. 3B shows a power generation operation state
  • FIG. 3C shows a power generation operation stop state.
  • the difference between the fuel cell according to the third embodiment of the present invention and the fuel cell according to the first embodiment of the present invention is that the fuel cell according to the first embodiment of the present invention has a hydrogen supply port 13 and a water discharge port 14.
  • the fuel cell according to the third embodiment of the present invention includes these, and the fuel cell according to the first embodiment of the present invention includes a hydrogen generating member in the fuel supply unit 4.
  • the fuel cell according to the third embodiment of the present invention uses an inert member having poor reactivity with the fuel gas (hydrogen gas in the present embodiment) in the fuel supply unit 4. is there.
  • the inert member having poor reactivity with the fuel gas hydrogen gas in the present embodiment
  • a metal, ceramic, cermet or the like having poor reactivity with the fuel gas is preferable.
  • a metal having poor reactivity with the fuel gas it is preferable to use a metal having good thermal conductivity such as Ti or Al.
  • the fuel supply unit 4 may be of any solid structure as in the other embodiments.
  • the fuel supply unit 4 has a structure in which powder is filled in a space surrounded by the fuel electrode 2 and the heater 6 (hydrogen supply port 13 or water discharge port). 14 may be a porous film that allows fuel gas to pass therethrough.
  • the fuel supply unit 4 is preferably formed by coating, powder compression, screen printing, vapor deposition, or the like. In addition, it is good to add a baking process as needed.
  • the hydrogen supply port 13 and the water discharge port 14 are closed in the state before the power generation operation of FIG.
  • the hydrogen supply port 13 and the water discharge port 14 are opened, hydrogen gas is supplied from the hydrogen supply port 13 to the fuel supply unit 4, and the fuel supply unit 4, hydrogen gas is supplied to the fuel electrode 2, water (H 2 O) generated in the fuel electrode 2 is supplied to the fuel supply unit 4, and further supplied from the fuel supply unit 4 to the water outlet 14. Finally, it is discharged from the water discharge port 14 to the outside of the fuel cell.
  • the hydrogen supply port 13 and the water discharge port 14 are closed so that hydrogen gas is not supplied from the outside.
  • the fuel cell according to the third embodiment of the present invention includes the fuel supply unit 4 and the oxidant supply unit 5. Since the solid structure is used so that no space exists inside the fuel cell, the mechanical strength is improved.
  • the electrolyte membrane 1, the fuel electrode 2, the oxidant electrode 3, the fuel supply unit 4, and the oxidant supply unit 5 are laminated one by one.
  • FIG. 4 is a schematic cross-sectional view of the fuel cell according to the fourth embodiment of the present invention, which is a state before the power generation operation. Also, in FIG. 4, the same parts as those in FIG.
  • the unit supply structures adjacent to each other share the fuel supply unit 4 or the oxidant supply unit 5.
  • the heater 6 and the cover member 8 surrounding the outside thereof are arranged not on the outer periphery of each unit laminated structure but on the outer periphery of the multiple unit structure. Therefore, rather than simply using a plurality of unit stacked structure fuel cells, the multiple unit configuration as in this embodiment can include many unit stacked structures with the same volume, and the output of the fuel cell Get higher.
  • the mechanical strength of the device is improved, and as a result, a fuel cell that maintains stable performance and has a long durability and a long life is provided. can do.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

La présente invention a trait à une pile à combustible qui comprend une électrode à combustible (2), une électrode d'agent d'oxydation (3), une membrane d'électrolyte (1) qui est prise en sandwich entre l'électrode à combustible (2) et l'électrode d'agent d'oxydation (3), une unité d'alimentation en combustible (4) permettant de fournir un combustible à l'électrode à combustible (2), et une unité d'alimentation en agent d'oxydation (5) permettant de fournir un agent d'oxydation à l'électrode d'agent d'oxydation (3). Chacun des éléments parmi l'électrode à combustible (2), l'électrode d'agent d'oxydation (3), la membrane d'électrolyte (1), l'unité d'alimentation en combustible (4) et l'unité d'alimentation en agent d'oxydation (5) est pourvu d'une structure solide.
PCT/JP2011/063899 2010-07-15 2011-06-17 Pile à combustible WO2012008266A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012524503A JP5516735B2 (ja) 2010-07-15 2011-06-17 燃料電池

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-160398 2010-07-15
JP2010160398 2010-07-15

Publications (1)

Publication Number Publication Date
WO2012008266A1 true WO2012008266A1 (fr) 2012-01-19

Family

ID=45469276

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/063899 WO2012008266A1 (fr) 2010-07-15 2011-06-17 Pile à combustible

Country Status (2)

Country Link
JP (1) JP5516735B2 (fr)
WO (1) WO2012008266A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013110509A3 (fr) * 2012-01-25 2013-10-17 Siemens Aktiengesellschaft Accumulateur d'énergie électrique
CN104205462A (zh) * 2012-03-29 2014-12-10 西门子公司 电蓄能器
JPWO2013111655A1 (ja) * 2012-01-26 2015-05-11 コニカミノルタ株式会社 燃料電池システム
US9502742B2 (en) 2012-03-12 2016-11-22 Siemens Aktiengesellschaft Electrical energy store

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58131664A (ja) * 1982-01-29 1983-08-05 Hitachi Ltd 燃料電池
JPS59139961U (ja) * 1983-03-10 1984-09-19 日本電池株式会社 ガス拡散電極
JPH0562695A (ja) * 1991-09-06 1993-03-12 Nippon Telegr & Teleph Corp <Ntt> 平板状固体電解質燃料電池
JP2584571Y2 (ja) * 1990-06-05 1998-11-05 三菱重工業株式会社 多セル型燃料電池用中間セパレータ
JP2002329508A (ja) * 2001-05-01 2002-11-15 Nissan Motor Co Ltd 固体電解質型燃料電池及びその製造方法
JP2005100780A (ja) * 2003-09-24 2005-04-14 Toyota Motor Corp 燃料電池用カソード及びこれを備えた固体高分子型燃料電池
JP2005203257A (ja) * 2004-01-16 2005-07-28 Mitsubishi Materials Corp 固体酸化物形燃料電池
JP2007015903A (ja) * 2005-07-11 2007-01-25 Kansai Electric Power Co Inc:The 酸素吸蔵合金
JP2007509480A (ja) * 2003-10-21 2007-04-12 レボルト テクノロジー アクスイェ セルスカプ 電極、その製造方法、金属／空気燃料セルおよび金属水素化物セル

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5492777A (en) * 1995-01-25 1996-02-20 Westinghouse Electric Corporation Electrochemical energy conversion and storage system
JP2009099491A (ja) * 2007-10-19 2009-05-07 Sharp Corp 燃料電池システムおよび電子機器
WO2011040182A1 (fr) * 2009-09-30 2011-04-07 コニカミノルタホールディングス株式会社 Dispositif de pile à combustible

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58131664A (ja) * 1982-01-29 1983-08-05 Hitachi Ltd 燃料電池
JPS59139961U (ja) * 1983-03-10 1984-09-19 日本電池株式会社 ガス拡散電極
JP2584571Y2 (ja) * 1990-06-05 1998-11-05 三菱重工業株式会社 多セル型燃料電池用中間セパレータ
JPH0562695A (ja) * 1991-09-06 1993-03-12 Nippon Telegr & Teleph Corp <Ntt> 平板状固体電解質燃料電池
JP2002329508A (ja) * 2001-05-01 2002-11-15 Nissan Motor Co Ltd 固体電解質型燃料電池及びその製造方法
JP2005100780A (ja) * 2003-09-24 2005-04-14 Toyota Motor Corp 燃料電池用カソード及びこれを備えた固体高分子型燃料電池
JP2007509480A (ja) * 2003-10-21 2007-04-12 レボルト テクノロジー アクスイェ セルスカプ 電極、その製造方法、金属／空気燃料セルおよび金属水素化物セル
JP2005203257A (ja) * 2004-01-16 2005-07-28 Mitsubishi Materials Corp 固体酸化物形燃料電池
JP2007015903A (ja) * 2005-07-11 2007-01-25 Kansai Electric Power Co Inc:The 酸素吸蔵合金

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013110509A3 (fr) * 2012-01-25 2013-10-17 Siemens Aktiengesellschaft Accumulateur d'énergie électrique
JPWO2013111655A1 (ja) * 2012-01-26 2015-05-11 コニカミノルタ株式会社 燃料電池システム
US9502742B2 (en) 2012-03-12 2016-11-22 Siemens Aktiengesellschaft Electrical energy store
CN104205462A (zh) * 2012-03-29 2014-12-10 西门子公司 电蓄能器
JP2015516651A (ja) * 2012-03-29 2015-06-11 シーメンス アクチエンゲゼルシヤフトＳｉｅｍｅｎｓ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ 電気エネルギ蓄積器

Also Published As

Publication number Publication date
JPWO2012008266A1 (ja) 2013-09-09
JP5516735B2 (ja) 2014-06-11

Similar Documents

Publication Publication Date Title
JP5581216B2 (ja) 還元性ガス中で使用するための高性能多層電極
US20130078535A1 (en) Metal-air battery
JP2011507161A (ja) 酸素含有ガス中で使用するための高性能多層電極
WO2011040182A1 (fr) Dispositif de pile à combustible
JP5876944B2 (ja) 燃料電池および燃料電池スタック
US9666892B2 (en) Cell, cell stack device, module, and module housing device
JPWO2011052283A1 (ja) 燃料電池装置
JP2012146649A (ja) 固体酸化物燃料電池用の密封部材及びそれを採用した固体酸化物燃料電池
JP2008103210A (ja) 燃料電池及び燃料電池スタック
JP5516735B2 (ja) 燃料電池
JP2006294508A (ja) 燃料電池発電装置および運転停止方法
WO2003075378A1 (fr) Electrode pour pile a combustible en oxyde solide et pile a combustible de ce type
US20080254333A1 (en) Steam electrolytic apparatus and steam electrolytic method
CN101325266A (zh) 一种微型组合再生式燃料电池电源系统
JP2006283103A (ja) 水蒸気電解セル
JP7125954B2 (ja) 固体酸化物形燃料電池におけるアノード層活性化方法、および固体酸化物形燃料電池システム
JP2007018858A (ja) 燃料電池システム
US10661736B2 (en) Molten metal anode solid oxide fuel cell for transportation-related auxiliary power units
WO2011135932A1 (fr) Dispositif de pile à combustible
JP5790530B2 (ja) ２次電池型燃料電池システム
JP2005216619A (ja) 燃料電池セル及び燃料電池
JP5516726B2 (ja) 燃料電池装置
JP2011165371A (ja) 燃料電池
JP5387821B2 (ja) 平板型固体酸化物形燃料電池
WO2025036558A1 (fr) Ensemble cellule électrochimique et procédé de préparation d&#39;un ensemble cellule électrochimique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11806597

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2012524503

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11806597

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载