US4115628A
Expired / Lapsed
US
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Electrode comprising a nickel based catalyst for electrochemical generators
Assignee: Bpifrance Financement SA
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Filing: 1976-01-09
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Granted: 1978-09-19
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Expires: 1996-01-09
Abstract
Abstract The invention relates to an improved electrode for an electrochemical generator, said electrode enabling the electrochemical oxidation of hydrogen supplied of the interface of said electrode and an electrolyte. It comprises a nickel-based catalyst formed of particles or crystallites the sizes of which range from about 20 to about 130 Angstroms.
Inventors
- 👤 Maurice Bonnemay
- 👤 Guy Bronoel
- 👤 Lysiane Angely
- 👤 Gilbert Peslerbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:17
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
103 words
An electrode for an electrochemical generator enabling electrochemical oxidation of hydrogen in contact with it, comprising an electrically-conducting support and a nickel-containing catalyst deposited thereon or incorporated therewith, said nickel-containing catalyst being formed of crystallites having sizes ranging from about 20 to about 130 A and being at most reversibly oxidizable under the action of an anodic overvoltage of -300 mV and taking up spontaneously a potential sufficiently close to that of a reversible ideal hydrogen electrode with respect to an electrolyte solution saturated with molecular hydrogen to be capable of electrochemically breaking and oxidizing molecular hydrogen into hydrogen ions, H + .
Claim 2
Dependent Claim
103 words
An electrode for an electrochemical generator enabling electrochemical oxidation of hydrogen in contact with it, comprising an electrically-conducting support and a nickel-containing catalyst deposited thereon or incorporated therewith, said nickel-containing catalyst being formed of crystallites having sizes ranging from about 20 to about 130 A and being at most reversibly oxidizable under the action of an anodic overvoltage of -300 mV and taking up spontaneously a potential sufficiently close to that of a reversible ideal hydrogen electrode with respect to an electrolyte solution saturated with molecular hydrogen to be capable of electrochemically breaking and oxidizing molecular hydrogen into hydrogen ions, H + .
Claim 3
Dependent Claim
26 words
An electrode according to claim 1, wherein the nickel-based catalyst is formed of particles or crystallites having sizes ranging from about 30 to about 120 A.
Claim 4
Dependent Claim
24 words
An electrode according to claim 1, wherein the lattice parameter of the nickel in the catalyst ranges from about 3.5170 A to 3.5210 A.
Claim 5
Dependent Claim
21 words
An electrode according to claim 3, wherein the lattice parameter of the nickel of the catalyst is less than 3.5200 A.
Claim 6
Dependent Claim
25 words
An electrode according to claim 4, wherein the lattice parameter of the nickel of the catalyst ranges from about 3.5185 A to about 3.5195 A.
Claim 7
Dependent Claim
25 words
An electrode according to claim 1, wherein the lattice parameter of the nickel of the catalyst ranges from about 3.5400 A to about 3.5470 A.
Claim 8
Dependent Claim
14 words
An electrode according to claim 6, wherein the electrically-conducting support is of vitreous carbon.
Claim 9
Dependent Claim
25 words
An electrode according to claim 1, wherein the catalyst is deposited on a substrate brought to a temperature ranging from about 50° to 120°-130° C.
Claim 10
Dependent Claim
29 words
An electrode according to claim 1, wherein the catalyst is deposited on a substrate of vitreous carbon brought to a temperature ranging from about 90° to about 170° C.
Claim 11
Dependent Claim
13 words
An electrode according to claim 8 wherein the catalyst has also undergone, annealing.
Claim 12
Dependent Claim
109 words
An electrode for an electrochemical generator enabling electrochemical oxidation of hydrogen in contact with it, comprising an electrically-conducting support and a catalyst consisting essentially of nickel deposited thereon or incorporated therewith, said catalyst consisting essentially of nickel being formed of crystallites having sizes ranging from about 20 to about 130 A and being at most reversibly oxidizable under the action of an anodic overvoltage of -300 mV and taking up spontaneously a potential sufficiently close to that of a reversible ideal hydrogen electrode with respect to an electrolyte solution saturated with molecular hydrogen to be capable of electrochemically breaking and oxidizing molecular hydrogen into hydrogen ions, H + .
Claim 13
Dependent Claim
109 words
An electrode for an electrochemical generator enabling electrochemical oxidation of hydrogen in contact with it, comprising an electrically-conducting support and a catalyst consisting essentially of nickel deposited thereon or incorporated therewith, said catalyst consisting essentially of nickel being formed of crystallites having sizes ranging from about 20 to about 130 A and being at most reversibly oxidizable under the action of an anodic overvoltage of -300 mV and taking up spontaneously a potential sufficiently close to that of a reversible ideal hydrogen electrode with respect to an electrolyte solution saturated with molecular hydrogen to be capable of electrochemically breaking and oxidizing molecular hydrogen into hydrogen ions, H + .
Claim 14
Dependent Claim
18 words
An electrochemical generator, constituted by one or several cells, wherein said cells comprise electrodes according to claim 1.
Claim 15
Dependent Claim
32 words
An electrode according to claim 1 which has the property of recovering the reversible potential of hydrogen after subjection of said electrode to a polarization of -300 mV and an interruption thereof.
Claim 16
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 2.
Claim 17
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 1.
Claim 18
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 3.
Claim 19
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 4.
Claim 20
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 5.
Claim 21
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 6.
Claim 22
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 7.
Claim 23
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 8.
Claim 24
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 9.
Claim 25
Dependent Claim
18 words
An electrochemical generator, constituted by one or more cells, wherein said cells comprise electrodes according to claim 10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |