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US4460495A
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Cathode for molten carbonate fuel cell
Assignee: General Electric Co
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Filing: 1982-09-10
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Granted: 1984-07-17
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Expires: 2002-09-10
Abstract
Abstract A compact comprised of a mixture of lithiated nickel oxide powder and lithiated copper oxide powder is fired in air producing a sintered body useful as a cathode in a molten carbonate fuel cell.
Inventors
- 👤 Charles D. Iacovangelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:21
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9016; H01M4/8605; H01M4/8621; H01M2004/8678; H01M2004/8689; H01M8/00; H01M8/14; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
146 words
A process for producing a sintered body useful as a cathode in a molten carbonate fuel cell, said sintered body being composed of from about 10 weight % to about 90 weight % of Li x Ni.sub.(1-x) O/balance Li y Cu.sub.(1-y) O, where x and y each ranges from about 0.005 to about 0.25, which comprises providing a mixture of about 10 weight % to about 90 weight % of said Li x Ni.sub.(1-x) O/balance said Li y Cu.sub.(1-y) O, said mixture having an average particle size ranging from about 1.5μ to about 10μ, forming said mixture into a compact and firing said compact in air at a temperature ranging from about 600° C. to about 1000° C. producing said sintered body, said body having a porosity ranging from about 25% by volume to about 75% by volume of the total volume of said sintered body.
Claim 2
Dependent Claim
146 words
A process for producing a sintered body useful as a cathode in a molten carbonate fuel cell, said sintered body being composed of from about 10 weight % to about 90 weight % of Li x Ni.sub.(1-x) O/balance Li y Cu.sub.(1-y) O, where x and y each ranges from about 0.005 to about 0.25, which comprises providing a mixture of about 10 weight % to about 90 weight % of said Li x Ni.sub.(1-x) O/balance said Li y Cu.sub.(1-y) O, said mixture having an average particle size ranging from about 1.5μ to about 10μ, forming said mixture into a compact and firing said compact in air at a temperature ranging from about 600° C. to about 1000° C. producing said sintered body, said body having a porosity ranging from about 25% by volume to about 75% by volume of the total volume of said sintered body.
Claim 3
Dependent Claim
14 words
The process according to claim 1 wherein said firing temperature is about 800° C.
Claim 4
Dependent Claim
17 words
The process according to claim 1 wherein x and y each has a value of about 0.02.
Claim 5
Dependent Claim
22 words
The process according to claim 1 wherein said sintered body is in the form of a plaque or plate with flat faces.
Claim 6
Dependent Claim
32 words
The process according to claim 1 wherein said mixture is comprised of from about 45 weight % to about 55 weight % of said Li x Ni.sub.(1-x) O/balance Li y Cu.sub.(1-y) O.
Claim 7
Dependent Claim
94 words
A sintered body useful as a cathode in a molten carbonate fuel cell, said sintered body being composed of from about 10 weight % to about 90 weight % of Li x Ni.sub.(1-x) O/balance Li y Cu.sub.(1-y) O, where x and y each ranges from about 0.005 to about 0.25, said sintered body having a porosity ranging from about 25% by volume to about 75% by volume of the total volume of said sintered body, said sintered body having a median pore size ranging from in excess of 1 micron to about 10 microns.
Claim 8
Dependent Claim
94 words
A sintered body useful as a cathode in a molten carbonate fuel cell, said sintered body being composed of from about 10 weight % to about 90 weight % of Li x Ni.sub.(1-x) O/balance Li y Cu.sub.(1-y) O, where x and y each ranges from about 0.005 to about 0.25, said sintered body having a porosity ranging from about 25% by volume to about 75% by volume of the total volume of said sintered body, said sintered body having a median pore size ranging from in excess of 1 micron to about 10 microns.
Claim 9
Dependent Claim
17 words
The sintered body of claim 6 wherein x and y each has a value of about 0.02.
Claim 10
Dependent Claim
14 words
The sintered body of claim 6 wherein said porosity is about 40% by volume.
Claim 11
Dependent Claim
27 words
The sintered body of claim 6 composed of about 45 weight % to about 55 weight % of said Li x Ni.sub.(1-x) O/balance Li y Cu.sub.(1-y) O.
Claim 12
Dependent Claim
12 words
The sintered body of claim 6 in the form of a plaque.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |