US4361631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode material for molten carbonate fuel cells
Assignee: General Electric Co
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Filing: 1982-03-19
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Granted: 1982-11-30
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Expires: 2002-03-19
Abstract
Abstract Electrode material composed of metal encapsulated substrate particles for making into an electrode for a molten carbonate fuel cell is produced by electroless plating of a metal electrochemically active for the reactions of the cell onto a substrate particle which is non-sintering at the operating temperatures of the cell.
Inventors
- 👤 Charles D. Iacovangelo
- 👤 Kenneth P. Zarnoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/8605; H01M4/8621; C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1633; C23C18/1655; C23C18/1662; C23C18/31; C23C18/32; C23C18/34; C23C18/36; C23C18/38; C23C18/40; C23C18/405; H01M8/00; H01M8/14; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; H01M4/8647; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
An electrode useful for a molten carbonate fuel cell consisting of metal encapsulated substrate particles sintered together only by means of said metal without significant exposure of the surface of said substrate particles, said electrode having a pore volume greater than 40% by volume but less than 85% by volume of the electrode, said electrode having a pore size ranging from about 0.1 micron to about 20 microns, said metal being selected from the group consisting of copper and nickel, and said substrate particles being selected from the group consisting of lithium aluminate, strontium titanate, α-alumina and mixtures thereof, said substrate particles ranging in size from about 0.1 micron to about 100 microns.
Claim 2
Dependent Claim
113 words
An electrode useful for a molten carbonate fuel cell consisting of metal encapsulated substrate particles sintered together only by means of said metal without significant exposure of the surface of said substrate particles, said electrode having a pore volume greater than 40% by volume but less than 85% by volume of the electrode, said electrode having a pore size ranging from about 0.1 micron to about 20 microns, said metal being selected from the group consisting of copper and nickel, and said substrate particles being selected from the group consisting of lithium aluminate, strontium titanate, α-alumina and mixtures thereof, said substrate particles ranging in size from about 0.1 micron to about 100 microns.
Claim 3
Dependent Claim
13 words
An electrode according to claim 1 which has a plurality of pore sizes.
Claim 4
Dependent Claim
33 words
The electrode of claim 1 wherein said substrate particles are of distributed size and said metal encapsulated particles are of distributed size wherein the thickness of said encapsulating metal is substantially the same.
Claim 5
Dependent Claim
35 words
The electrode of claim 1 wherein said substrate particles are all substantially the same size and wherein said encapsulating metal is in a range of thicknesses and said metal encapsulated particles are of distributed size.
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) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |