Patent US5151334A successfully refreshed from Google Patents.
US5151334A
Expired / Lapsed
US
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Fuel cell utilizing solidous electrolyte
Assignee: Meidensha Corp
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Filing: 1990-08-24
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Granted: 1992-09-29
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Expires: 2010-08-24
Abstract
Abstract A cell unit structure for stacking to form a fuel cell is described, composed of a porous substrate, a hydrogen electrode film formed of fine particles of nickel powder stacked on the porous substrate to form fine voids of homogeneous diameter, a film of solidous electrolyte stacked on the hydrogen electrode film, and an oxygen electrode film stacked on the electrolyte film.
Inventors
- 👤 Kazuo Fushimi
- 👤 Kaoru Kitakizaki
- 👤 Kazuhiko Kawakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:51
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8878; H01M4/8896; H01M8/00; H01M8/02; C; C23; C23C; C23C14/00; C23C14/06; C23C16/00; C23C16/22; C23C16/30; H01M4/8825; H01M4/8867; H01M4/8871; H01M4/8882; H01M4/8885; H01M8/10; H01M8/1007; H01M8/12; H01M8/1213; H01M8/1231; H01M8/24; H01M8/241; H01M8/2425; H01M8/2432; H01M8/2465; H01M2004/8678; H01M2004/8684; H01M2300/00; H01M2300/0017; H01M2300/0065; H01M2300/0068; H01M4/8605; H01M4/861; H01M4/8647; H01M4/8657; H01M4/90; H01M4/9016; H01M4/9025; H01M4/9033; H01M4/9041; H01M8/1004; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
71 words
A fuel cell constructed of a plurality of cell unit structures stacked and connected in series, wherein said cell unit structure comprising; a porous substrate, a hydrogen electrode film stacked on the porous substrate, said hydrogen electrode formed of fine particles of nickel powder having fine voids of homogeneous diameter, a solid electrolyte film stacked on the hydrogen electrode film, and an oxygen electrode film stacked on the solid electrolyte film.
Claim 2
Dependent Claim
71 words
A fuel cell constructed of a plurality of cell unit structures stacked and connected in series, wherein said cell unit structure comprising; a porous substrate, a hydrogen electrode film stacked on the porous substrate, said hydrogen electrode formed of fine particles of nickel powder having fine voids of homogeneous diameter, a solid electrolyte film stacked on the hydrogen electrode film, and an oxygen electrode film stacked on the solid electrolyte film.
Claim 3
Dependent Claim
80 words
A fuel cell constructed of a plurality of cell unit structures stacked and connected in series, wherein said cell unit structure comprising; a porous substrate, a hydrogen electrode film stacked on the porous substrate, said hydrogen electrode formed of fine particles of nickel powder having fine voids of homogeneous diameter, a coating of platinum stacked on the hydrogen electrode film, a solid electrolyte film stacked on the platinum coating, and an oxygen electrode film stacked on the solid electrolyte film.
Claim 4
Dependent Claim
80 words
A fuel cell constructed of a plurality of cell unit structures stacked and connected in series, wherein said cell unit structure comprising; a porous substrate, a hydrogen electrode film stacked on the porous substrate, said hydrogen electrode formed of fine particles of nickel powder having fine voids of homogeneous diameter, a coating of platinum stacked on the hydrogen electrode film, a solid electrolyte film stacked on the platinum coating, and an oxygen electrode film stacked on the solid electrolyte film.
Claim 5
Dependent Claim
107 words
A fuel cell constructed of a plurality of cell unit structures stacked and connected in series, wherein said cell unit structure comprises; a porous substrate, a hydrogen electrode film stacked on said porous substrate, said film formed of a mixture of a first nickel powder having diameter of less than or equal to 1 μm and a second nickel powder having diameter of less than or equal to 3 μm, for forming fine voids of homogeneous diameter, a coating of platinum stacked on said hydrogen electrode film, a solid electrolyte film stacked on said platinum coating, and an oxygen electrode film stacked on said solid electrolyte film.
Claim 6
Dependent Claim
107 words
A fuel cell constructed of a plurality of cell unit structures stacked and connected in series, wherein said cell unit structure comprises; a porous substrate, a hydrogen electrode film stacked on said porous substrate, said film formed of a mixture of a first nickel powder having diameter of less than or equal to 1 μm and a second nickel powder having diameter of less than or equal to 3 μm, for forming fine voids of homogeneous diameter, a coating of platinum stacked on said hydrogen electrode film, a solid electrolyte film stacked on said platinum coating, and an oxygen electrode film stacked on said solid electrolyte film.
Claim 7
Dependent Claim
18 words
A fuel cell as set forth in claim 1, wherein said porous substrate is formed of stainless steel.
Claim 8
Dependent Claim
18 words
A fuel cell as set forth in claim 1, wherein said porous substrate is formed of nickel powder.
Claim 9
Dependent Claim
18 words
A fuel cell as set forth in claim 1, wherein said porous substrate is formed of copper powder.
Claim 10
Dependent Claim
25 words
A fuel cell as set forth in claim 1, wherein said homogeneous diameter of said voids is in a range of 1 to 3 μm.
Claim 11
Dependent Claim
20 words
A fuel cell as set forth in claim 1, wherein said solid electrolyte is formed of single LaF 3 crystals.
Claim 12
Dependent Claim
19 words
A fuel cell as set forth in claim 1, wherein thickness of said solid electrolyte film is 10 μm.
Claim 13
Dependent Claim
20 words
A fuel cell as set forth in claim 1, wherein said oxygen electrode film is formed of a perovskite compound.
Claim 14
Dependent Claim
23 words
A fuel cell as set forth in claim 10, wherein said perovskite compound is La 0 .6 Sr 0 .4 CoO x .
Claim 15
Dependent Claim
21 words
A fuel cell as set forth in claim 1, wherein said oxygen electrode film is formed of a solution of silver.
Claim 16
Dependent Claim
22 words
A fuel cell as set forth in claim 1, wherein said oxygen electrode film is formed of a solution of chloroplatinic acid.
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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) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |