WO2006123389A1 - Electrolytic capacitor with gas-sorbing compound - Google Patents
Electrolytic capacitor with gas-sorbing compound Download PDFInfo
- Publication number
- WO2006123389A1 WO2006123389A1 PCT/IT2006/000349 IT2006000349W WO2006123389A1 WO 2006123389 A1 WO2006123389 A1 WO 2006123389A1 IT 2006000349 W IT2006000349 W IT 2006000349W WO 2006123389 A1 WO2006123389 A1 WO 2006123389A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- capacitor according
- previous
- getter
- organic compound
- compound
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 41
- 150000001875 compounds Chemical class 0.000 title claims abstract description 33
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 13
- 239000001257 hydrogen Substances 0.000 claims abstract description 13
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000005984 hydrogenation reaction Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 11
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical group [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 10
- 150000002894 organic compounds Chemical class 0.000 claims description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 7
- 125000005842 heteroatom Chemical group 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims description 4
- 150000002430 hydrocarbons Chemical group 0.000 claims description 4
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 claims description 2
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 claims description 2
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- -1 cyclic anhydride Chemical class 0.000 claims description 2
- 239000000539 dimer Substances 0.000 claims description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 description 5
- 239000000654 additive Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- FIDRAVVQGKNYQK-UHFFFAOYSA-N 1,2,3,4-tetrahydrotriazine Chemical compound C1NNNC=C1 FIDRAVVQGKNYQK-UHFFFAOYSA-N 0.000 description 1
- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical compound C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
Definitions
- the present invention relates to an electrolytic capacitor comprising a compound that can sorb the gases generated during the functioning of the capacitor.
- the known electrolytic capacitors e.g. EDLC (Electrochemical Double Layer
- Capacitor supercapacitors comprise a dielectric formed of one or more sheets impregnated with particular electrolytic solutions. In operation, these solutions can generate gases that may damage the capacitors, even irreparably, due to pressure build-up; the gases that are most commonly generated by functioning of capacitors are carbon dioxide (CO 2 ), water vapor (H 2 O) and, particularly, hydrogen (H 2 ).
- CO 2 carbon dioxide
- H 2 O water vapor
- H 2 hydrogen
- JP 03-292712 describes an additive including a particulate made of platinum, palladium or alloys thereof, which can sorb hydrogen and is applied onto the sheets after they have been impregnated with the electrolytic solution.
- these sheets may have a very small thickness, in particular less than 10 ⁇ m, so that they may be damaged by particles contained in such a particulate due to the relatively large diameter thereof, e.g. about 10 ⁇ m, with the consequent risk of accidental short-circuits within the capacitor.
- the organic compounds capable of sorbing gas molecules will also be referred to as getter compounds.
- getter compounds can be dissolved in the solvent of electrolytic solutions for capacitors, so as to sorb the gases generated in these capacitors without dispersing harmful particles and thus without the risk of damaging the capacitor.
- the getter compound can advantageously be dissolved in the electrolytic solution before this is used to impregnate the sheets working as dielectric.
- the getter compound preferably includes an unsaturated organic compound.
- These particular getter compounds do not require activation, do not generate water during the sorption of hydrogen, have a high sorbing capacity and speed as well as low manufacturing cost, thus being particularly suitable for use as additives for electrolytic capacitors.
- it has been found that such getter compounds do not significantly alter the electric features of the capacitor wherein it is used.
- the getter compound is used in obination with a hydrogenation catalyst.
- unsaturated hydrogen getter compounds useful in the present invention are the compounds described in the PCT patent application WO 01/68516, having the general formula A or A' :
- R 1 , R 2 and R 3 are hydrogen or hydrocarbon moieties optionally comprising one or more heteroatoms and wherein at least one among R 1 , R 2 and R 3 is chosen in the group formed by alkenil, alkynil, arylalkenil, arylalkynil moieties, possibly comprising one or more heteroatoms.
- the three substituents R 1 , R 2 and R 3 may all be different from hydrogen and may each one show more than one unsaturated bond, so as to maximize the amount of hydrogen irreversibly sorbed per gram of substance. Furthermore, according to a particular embodiment of the present invention, the substituents R 1 , R 2 and R 3 comprise at least one heteroatom, chosen among N, O 3 and S and directly bonded to the triazine ring. In order to allow a simplified synthesis of the getter compound of general formula A or A', the three substituents R 1 , R 2 and R 3 are preferably equal to each other.
- Compound a has the name IUPAC 2,4,6-tris-(E-3-phenyl-prop-2-enyl-l-oxy)-
- compound b has the name IUPAC 2,4,6-tris-(4-methoxy-but-2-ynyl-l-oxy)-l,3,5-triazine and molecular weight 375.38 g/mol.
- the catalyst to be used along with the getter compound can be any catalyst known in the art for hydrogenation reactions, such as transition metals belonging to Group VIII of the periodic table or salts and complexes thereof; these latter are preferred due to their solubility in the electrolytic solutions of the capacitors. It is also possible to use these metals in supported form, preferably in this case holding the catalyst inside the capacitor in an inner space in fluid communication with the solution but in such a way as to avoid physical contact between the particles of the support and the sheets making up the dielectric, in order to avoid the possible damages referred to above.
- palladium supported on alumina or on coal are preferably used, that may be kept separated from the sheets keeping the catalyst in a chamber having at least a portion of its surface permeable to the solution (and of course to hydrogen) but capable of retaining particulate solids; this may be obtained, e.g., by using a porous septum.
- the amount of palladium is in any case comprised between 0.1% and 10% by weight of the unsaturated organic compound.
- the getter compound may be a cyclic anhydride.
- CO 2 or H 2 O getters do not generally require a catalyst, because the chemical reaction giving rise to the absorption of the gas takes place instantaneously when the gas molecule reaches the getter compound.
- Mixtures of the getter compunds described above may be employed, to take care of the possible release of different gases inside electrolytic capacitors.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A capacitor comprising at least one electrolytic solution, characterized by including at least a getter compound which can be dissolved in the electrolytic solution. In particular, such a getter compound is a hydrogen getter, preferably used in combination with a hydrogenation catalyst.
Description
"ELECTROLYTIC CAPACITOR WITH GAS-SORBING COMPOUND"
The present invention relates to an electrolytic capacitor comprising a compound that can sorb the gases generated during the functioning of the capacitor. The known electrolytic capacitors, e.g. EDLC (Electrochemical Double Layer
Capacitor) supercapacitors, comprise a dielectric formed of one or more sheets impregnated with particular electrolytic solutions. In operation, these solutions can generate gases that may damage the capacitors, even irreparably, due to pressure build-up; the gases that are most commonly generated by functioning of capacitors are carbon dioxide (CO2), water vapor (H2O) and, particularly, hydrogen (H2).
In order to overcome the problems in case of hydrogen, JP 03-292712 describes an additive including a particulate made of platinum, palladium or alloys thereof, which can sorb hydrogen and is applied onto the sheets after they have been impregnated with the electrolytic solution. However, these sheets may have a very small thickness, in particular less than 10 μm, so that they may be damaged by particles contained in such a particulate due to the relatively large diameter thereof, e.g. about 10 μm, with the consequent risk of accidental short-circuits within the capacitor.
Object of the present invention is thus to provide a capacitor being free from such a drawback. Said object is achieved by a capacitor comprising a dielectric formed of one or more sheets impregnated with at least an electrolytic solution, characterized by including at least an organic compound capable of sorbing gas molecules and being soluble in said electrolytic solution.
In the following, the organic compounds capable of sorbing gas molecules will also be referred to as getter compounds.
It has been found that some particular getter compounds can be dissolved in the solvent of electrolytic solutions for capacitors, so as to sorb the gases generated in these capacitors without dispersing harmful particles and thus without the risk of damaging the capacitor. In order to simplify the capacitor manufacturing, the getter compound can advantageously be dissolved in the electrolytic solution before this is used to
impregnate the sheets working as dielectric.
Further advantages and characteristics of the additive according to the present invention will be apparent to those skilled in the art from the following detailed and not limiting description of some embodiments thereof. In order to sorb hydrogen, the getter compound preferably includes an unsaturated organic compound. These particular getter compounds do not require activation, do not generate water during the sorption of hydrogen, have a high sorbing capacity and speed as well as low manufacturing cost, thus being particularly suitable for use as additives for electrolytic capacitors. In addition, it has been found that such getter compounds do not significantly alter the electric features of the capacitor wherein it is used. Preferably, the getter compound is used in obination with a hydrogenation catalyst.
An example of unsaturated hydrogen getter compounds useful in the present invention are the compounds described in the PCT patent application WO 01/68516, having the general formula A or A' :
R1
A A1 wherein R1, R2 and R3 are hydrogen or hydrocarbon moieties optionally comprising one or more heteroatoms and wherein at least one among R1, R2 and R3 is chosen in the group formed by alkenil, alkynil, arylalkenil, arylalkynil moieties, possibly comprising one or more heteroatoms.
The getter compound useful for the invention can also be a dimer or a polymer of the compound having general formula A or A', as well as a copolymer wherein one of the structural units has the general formula A or A'.
The three substituents R1, R2 and R3 may all be different from hydrogen and may each one show more than one unsaturated bond, so as to maximize the amount of hydrogen irreversibly sorbed per gram of substance.
Furthermore, according to a particular embodiment of the present invention, the substituents R1, R2 and R3 comprise at least one heteroatom, chosen among N, O3 and S and directly bonded to the triazine ring. In order to allow a simplified synthesis of the getter compound of general formula A or A', the three substituents R1, R2 and R3 are preferably equal to each other.
The two following compounds, both having general formula A and being described in detail in PCT patent application WO 01/68516, can be employed as getter compounds in the present invention:
Compound a has the name IUPAC 2,4,6-tris-(E-3-phenyl-prop-2-enyl-l-oxy)-
1,3,5-triazine and molecular weight 477.56 g/mol, while compound b has the name IUPAC 2,4,6-tris-(4-methoxy-but-2-ynyl-l-oxy)-l,3,5-triazine and molecular weight 375.38 g/mol.
The catalyst to be used along with the getter compound can be any catalyst known in the art for hydrogenation reactions, such as transition metals belonging to Group VIII of the periodic table or salts and complexes thereof; these latter are preferred due to their solubility in the electrolytic solutions of the capacitors. It is also possible to use these metals in supported form, preferably in this case holding the catalyst inside the capacitor in an inner space in fluid communication with the
solution but in such a way as to avoid physical contact between the particles of the support and the sheets making up the dielectric, in order to avoid the possible damages referred to above. In this latter case, palladium supported on alumina or on coal are preferably used, that may be kept separated from the sheets keeping the catalyst in a chamber having at least a portion of its surface permeable to the solution (and of course to hydrogen) but capable of retaining particulate solids; this may be obtained, e.g., by using a porous septum. The amount of palladium is in any case comprised between 0.1% and 10% by weight of the unsaturated organic compound.
In case the sorption of CO2 is needed, a suitable getter compound may be naphthol and/or guanidine.
In case the sorption of H2O is needed, the getter compound may be a cyclic anhydride.
CO2 or H2O getters do not generally require a catalyst, because the chemical reaction giving rise to the absorption of the gas takes place instantaneously when the gas molecule reaches the getter compound.
Mixtures of the getter compunds described above may be employed, to take care of the possible release of different gases inside electrolytic capacitors.
The amount and the composition of the getter compound (or compounds) to be used can be determined according to the amount and to the type of gas that can be generated in the electrolytic capacitor; these data can be obtained by orientative tests carried out on capacitors without getter compounds.
Further variations and/or additions may be made by those skilled in the art to the hereinabove described and illustrated embodiments of the invention while remaining within the scope of the same invention.
Claims
1. A capacitor comprising a dielectric formed of one or more sheets impregnated with at least an electrolytic solution, characterized by including at least an organic compound capable of sorbing gas molecules and being soluble in said electrolytic solution.
2. A capacitor according to the previous claim, characterized in that such an organic compound comprises a hydrogen getter compound.
3. A capacitor according to the previous claim, characterized in that such a hydrogen getter compound comprises an unsaturated compound.
4. A capacitor according to the previous claim, characterized by further comprising a hydrogenation catalyst
5. A capacitor according to the previous claim, characterized in that such an unsaturated compound has the general formula A or A', a dimer or a polymer thereof, or a copolymer wherein one of the structural units has general formula A or A':
R1
A A1 wherein R1, R2 and R3 are hydrogen or hydrocarbon moieties optionally comprising one or more heteroatoms, at least one among R1, R2 and R3 being chosen in the group formed by alkenil, alkynil, arylalkenil, arylalkynil moieties, possibly comprising one or more heteroatoms.
5. A capacitor according to the previous claim, characterized in that R1, R2 and R3 comprise at least one heteroatom chosen among N, O, S, which is directly bonded to the triazine ring.
6. A capacitor according to claim 4 or 5, characterized in that R1, R2 and R3 are equal to each other.
7. A capacitor according to the previous claim, characterized in that R , R and R can be represented by the general formula R-(C ≡ C)n-CH2-O, wherein n> 1 and R is a hydrocarbon moiety.
8. A capacitor according to claim 6, characterized in that R1, R2 and R3 can be represented by the general formula R-(C=C)n-CH2-O, wherein n≥ l and R is a hydrocarbon moiety.
9. A capacitor according to claims 3 to 8, characterized in that the hydrogenation catalyst is chosen among metals belonging to Group VIII of the periodic table, salts and complexes thereof.
10. A capacitor according to the previous claim, characterized in that the hydrogenation catalyst is palladium supported on alumina or coal.
11. A capacitor according to claims 9 or 10, characterized in that the amount of palladium is comprised between 0.1% and 10% by weight of the unsaturated compound.
12. A capacitor according to claim 1, characterized by comprising an unsaturated organic compound having formula:
13. A capacitor according to claim 1, characterized by comprising an unsaturated organic compound having formula:
14. A capacitor according to claim 1, characterized in that such an organic compound comprises a getter for carbon dioxide.
15. A capacitor according to the previous claim, characterized by comprising one or more between naphthol and guanidine.
16. A capacitor according to claim 1, characterized in that such an organic compound comprises a getter for water vapor.
17. A capacitor according to the previous claim, characterized by comprising a cyclic anhydride.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2005A000904 | 2005-05-17 | ||
| IT000904A ITMI20050904A1 (en) | 2005-05-17 | 2005-05-17 | ADDITIVE FOR ELECTROLYTIC CONDENSERS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006123389A1 true WO2006123389A1 (en) | 2006-11-23 |
Family
ID=36950147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IT2006/000349 WO2006123389A1 (en) | 2005-05-17 | 2006-05-10 | Electrolytic capacitor with gas-sorbing compound |
Country Status (2)
| Country | Link |
|---|---|
| IT (1) | ITMI20050904A1 (en) |
| WO (1) | WO2006123389A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7663865B2 (en) | 2005-12-06 | 2010-02-16 | Saes Getters S.P.A. | Electrolytic capacitors comprising means in the form of a multilayer polymeric sheet for the sorption of harmful substances |
| US8081417B2 (en) | 2006-01-16 | 2011-12-20 | Saes Getters S.P.A. | Electrolytic capacitor comprising means for the sorption of harmful substances |
| WO2019027925A1 (en) * | 2017-07-31 | 2019-02-07 | Pellion Technologies | Electrochemical cell with getter and method of forming same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB979024A (en) * | 1962-10-15 | 1965-01-01 | Dubilier Condenser Co 1925 Ltd | Improvements in or relating to electrolytic capacitors |
| US3331002A (en) * | 1963-10-10 | 1967-07-11 | Cornell Dubilier Electric | Sealed capacitor having hydrogen absorbing material therein |
| US20030052304A1 (en) * | 2000-03-15 | 2003-03-20 | Saes Getters S.P.A. | Hydrogen getter composition |
| EP1437749A1 (en) * | 2001-09-26 | 2004-07-14 | Rubycon Corporation | Electrolyte solution for driving electrolytic capacitor and electrolytic capacitor |
-
2005
- 2005-05-17 IT IT000904A patent/ITMI20050904A1/en unknown
-
2006
- 2006-05-10 WO PCT/IT2006/000349 patent/WO2006123389A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB979024A (en) * | 1962-10-15 | 1965-01-01 | Dubilier Condenser Co 1925 Ltd | Improvements in or relating to electrolytic capacitors |
| US3331002A (en) * | 1963-10-10 | 1967-07-11 | Cornell Dubilier Electric | Sealed capacitor having hydrogen absorbing material therein |
| US20030052304A1 (en) * | 2000-03-15 | 2003-03-20 | Saes Getters S.P.A. | Hydrogen getter composition |
| EP1437749A1 (en) * | 2001-09-26 | 2004-07-14 | Rubycon Corporation | Electrolyte solution for driving electrolytic capacitor and electrolytic capacitor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7663865B2 (en) | 2005-12-06 | 2010-02-16 | Saes Getters S.P.A. | Electrolytic capacitors comprising means in the form of a multilayer polymeric sheet for the sorption of harmful substances |
| US8081417B2 (en) | 2006-01-16 | 2011-12-20 | Saes Getters S.P.A. | Electrolytic capacitor comprising means for the sorption of harmful substances |
| WO2019027925A1 (en) * | 2017-07-31 | 2019-02-07 | Pellion Technologies | Electrochemical cell with getter and method of forming same |
Also Published As
| Publication number | Publication date |
|---|---|
| ITMI20050904A1 (en) | 2006-11-18 |
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