US4317866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molten carbonate fuel cell anode
Assignee: RTX Corp
•
Filing: 1980-09-24
•
Granted: 1982-03-02
•
Expires: 2000-09-24
Abstract
Abstract A molten carbonate fuel cell ceria anode and a molten carbonate fuel cell including such anode are described. The ceria anode, in addition to having the requisite electrolyte compatibility, catalytic activity, and electron conductivity, has improved oxidation resistance and structural stability as well.
Inventors
- 👤 John C. Trocciola
- 👤 Richard C. Nickols, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:06
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/8605; H01M4/8621; H01M8/00; H01M8/14; H01M2004/8678; H01M2004/8684; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
64 words
A fuel cell including an electrolyte-matrix containing an alkali metal carbonate electrolyte which is molten during operation of the fuel cell, an anode electrode in contact with the electrolyte-matrix and a cathode electrode spaced apart from the anode electrode and in contact with the electrolyte-matrix, wherein the improvement comprises a molten carbonate electrolyte compatible, oxidation resistant, structurally stable, catalytically active, electron conductive ceria anode.
Claim 2
Dependent Claim
64 words
A fuel cell including an electrolyte-matrix containing an alkali metal carbonate electrolyte which is molten during operation of the fuel cell, an anode electrode in contact with the electrolyte-matrix and a cathode electrode spaced apart from the anode electrode and in contact with the electrolyte-matrix, wherein the improvement comprises a molten carbonate electrolyte compatible, oxidation resistant, structurally stable, catalytically active, electron conductive ceria anode.
Claim 3
Dependent Claim
18 words
The fuel cell of claim 1 wherein the ceria anode has a pore size greater than 1 micron.
Claim 4
Dependent Claim
16 words
The fuel cell of claim 1 wherein the ceria anode has a porosity greater than 40%.
Claim 5
Dependent Claim
19 words
The fuel cell of claim 1 wherein the electrolyte comprises lithium carbonate, potassium carbonate, sodium carbonate, or mixtures thereof.
References Cited (Backward Citations)
CA893853A
Cited
US3347668A
Cited
US3377203A
Cited
US3467552A
Cited
US3622394A
Cited
US3615862A
Cited
US3615839A
Cited
US4115628A
Cited
US4041210A
Cited
US4080487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-01 | 1985-08-31 | 1986-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-01 | 1989-08-31 | 1990-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-01 | 1993-08-31 | 1994-03-02 | $7700.00 | Window Closed / Lapsed |