US4511636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molten carbonate fuel cell matrices
Assignee: United States Department of Energy
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Filing: 1983-11-07
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Granted: 1985-04-16
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Expires: 2003-11-07
Abstract
Abstract A molten carbonate fuel cell including a cathode electrode of electrically conducting or semiconducting lanthanum containing material and an electrolyte containing matrix of an electrically insulating lanthanum perovskite. In addition, in an embodiment where the cathode electrode is LaMnO 3 , the matrix may include LaAlO 3 or a lithium containing material such as LiAlO 2 or Li 2 TiO 3 .
Inventors
- 👤 Wolfgang M. Vogel
- 👤 Stanley W. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:30
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9016; H01M8/00; H01M8/02; H01M8/0289; H01M8/0295; H01M8/14; H01M8/141; H01M8/142; H01M2004/8678; H01M2004/8689; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
57 words
A molten carbonate fuel cell comprising: an anode electrode; a cathode electrode; and a matrix containing an electrolyte which is molten during operation of the fuel cell, the two electrodes being separated by the electrolyte contained within the matrix, the cathode electrode including electrically non-insulating lanthanum containing material and the matrix including an electrically insulating lanthanum oxygenate.
Claim 2
Dependent Claim
57 words
A molten carbonate fuel cell comprising: an anode electrode; a cathode electrode; and a matrix containing an electrolyte which is molten during operation of the fuel cell, the two electrodes being separated by the electrolyte contained within the matrix, the cathode electrode including electrically non-insulating lanthanum containing material and the matrix including an electrically insulating lanthanum oxygenate.
Claim 3
Dependent Claim
19 words
A fuel cell according to claim 1 wherein the matrix material includes a mixed oxide of lanthanum and titanium.
Claim 4
Dependent Claim
15 words
A fuel cell according to claim 1 wherein the matrix material is LaAlO 3 .
Claim 5
Dependent Claim
31 words
A fuel cell according to claim 1 wherein the lanthanum containing cathode material is selected from the group consisting of LaMnO 3 , LaNiO 3 and La 2 NiO 4 .
Claim 6
Dependent Claim
39 words
A fuel cell according to claim 4 wherein the lanthanum containing cathode material is modified by replacing a portion of the lanthanum with a lower valent material selected from the group consisting of Sr, Zr, Ca, K and Cd.
Claim 7
Dependent Claim
17 words
A fuel cell according to claim 1 wherein the lanthanum containing cathode material is LaCoO 3 .
Claim 8
Dependent Claim
29 words
A fuel cell according to claim 6 wherein the lanthanum containing cathode material is modified by replacing a portion of the cobalt with a lower valent Fe or Ni.
Claim 9
Dependent Claim
47 words
A fuel cell according to claim 1 wherein the lanthanum containing cathode material is selected from the group consisting of La 0 .8 Sr 0 .2 MnO 3 , LaCo 0 .5 Fe 0 .5 O 3 and La 0 .8 Sr 0 .2 NiO 3 .
Claim 10
Dependent Claim
28 words
A fuel cell according to claim 1 wherein the lanthanum containing material for the cathode is LaMnO 3 , and wherein the matrix material includes LaAlO 3 .
Claim 11
Dependent Claim
60 words
A molten carbonate fuel cell comprising: an anode electrode; a cathode electrode; and a porous matrix containing an electrolyte which is molten during operation of the fuel cell, the two electrodes being separated by the electrolyte contained within the matrix, the cathode electrode including an electrically non-insulating lanthanum containing material and the matrix including an electrically insulating lanthanum containing perovskite.
Claim 12
Dependent Claim
60 words
A molten carbonate fuel cell comprising: an anode electrode; a cathode electrode; and a porous matrix containing an electrolyte which is molten during operation of the fuel cell, the two electrodes being separated by the electrolyte contained within the matrix, the cathode electrode including an electrically non-insulating lanthanum containing material and the matrix including an electrically insulating lanthanum containing perovskite.
Claim 13
Dependent Claim
35 words
A fuel cell according to claim 10 wherein the lanthanum containing cathode material is selected from the group consisting of LaMnO 3 , LaCoO 3 , LaNiO 3 , and La 2 NiO 4 .
Claim 14
Dependent Claim
15 words
A fuel cell according to claim 10 wherein the matrix material is LaAlO 3 .
Claim 15
Dependent Claim
19 words
A fuel cell according to claim 10 wherein the matrix material includes a mixed oxide of lanthanum and titanium.
Claim 16
Dependent Claim
56 words
A molten carbonate fuel cell comprising an anode electrode; a cathode electrode; and a porous matrix containing an electrolyte which is molten during operation of the fuel cell, the two electrodes being separated by the electrolyte contained within the matrix, the cathode material including LaMnO 3 and the matrix material includes Li 2 TiO 3 .
Claim 17
Dependent Claim
56 words
A molten carbonate fuel cell comprising an anode electrode; a cathode electrode; and a porous matrix containing an electrolyte which is molten during operation of the fuel cell, the two electrodes being separated by the electrolyte contained within the matrix, the cathode material including LaMnO 3 and the matrix material includes Li 2 TiO 3 .
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) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |