US4554224A
Expired / Lapsed
US
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Hydrogen-oxygen solid electrolyte fuel cell
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1984-01-30
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Granted: 1985-11-19
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Expires: 2004-01-30
Abstract
Abstract A hydrogen-oxygen solid electrolyte fuel cell using Cu2O as a cathode catalyst.
Inventors
- 👤 Osamu Nakamura
- 👤 Isao Ogino
- 👤 Masakazu Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:01
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9016; H01M8/00; H01M8/10; H01M8/1007; H01M8/1004; H01M8/1016; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
A hydrogen-oxygen solid electrolyte fuel cell comprising an oxidizing agent electrode formed of an oxidizing agent electrode catalyst and a conducting agent, a fuel electrode, a solid electrolyte disposed between said two electrodes, and housings for supplying oxygen to said oxidizing agent electrode and hydrogen to said fuel electrode, which fuel cell is characterized by said solid electrolyte being one member selected from the group consisting of 12-molybdophosphoric acid and 12-tungstophosphoric acid, and said oxidizing agent electrode catalyst being Cu 2 O.
Claim 2
Dependent Claim
82 words
A hydrogen-oxygen solid electrolyte fuel cell comprising an oxidizing agent electrode formed of an oxidizing agent electrode catalyst and a conducting agent, a fuel electrode, a solid electrolyte disposed between said two electrodes, and housings for supplying oxygen to said oxidizing agent electrode and hydrogen to said fuel electrode, which fuel cell is characterized by said solid electrolyte being one member selected from the group consisting of 12-molybdophosphoric acid and 12-tungstophosphoric acid, and said oxidizing agent electrode catalyst being Cu 2 O.
Claim 3
Dependent Claim
31 words
A hydrogen-oxygen solid electrolyte fuel cell according to claim 1, wherein the weight ratio of said Cu 2 O to said conducting agent falls in the range of 1:10 to 10:1.
Claim 4
Dependent Claim
39 words
A hydrogen-oxygen solid electrolyte fuel cell according to claim 1, wherein said Cu 2 O is a product obtained by reducing at least one member selected from the group consisting of Cu(CH 3 COO) 2 and Cu(OH) 2 .
Claim 5
Dependent Claim
30 words
A hydrogen-oxygen solid electrolyte fuel cell according to claim 3, wherein said Cu 2 O is a product obtained by reducing Cu(CH 3 COO) 2 with hydrazine at room temperature.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |