US4476199A
Expired / Lapsed
US
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Fused carbonate fuel cell
Assignee: Hitachi Ltd
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Filing: 1983-01-26
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Granted: 1984-10-09
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Expires: 2003-01-26
Abstract
Abstract A fused carbonate type of fuel cell comprising an electrolytic body retaining an electrolyte therein which is arranged between an anode and a cathode, where electricity is electrochemically generated by feeding fuel gas and an oxidant to a fuel chamber arranged on the anode side and an oxidant chamber arranged on the cathode side, respectively, said fuel cell being characterized in that the electrolytic body comprises an electrolyte, an electrolyte-holding member for holding the electrolyte and an inorganic binder.
Inventors
- 👤 Masato Takeuchi
- 👤 Hideo Okada
- 👤 Sigeru Okabe
- 👤 Hiroshi Tobita
- 👤 Munehiko Tonami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:40
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/14; H01M8/141; H01M8/142; H01M8/02; H01M8/0289; H01M8/0295; 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
91 words
A fused carbonate type fuel cell comprising an electrolytic body holding an electrolyte therein which is arranged between an anode and a cathode, wherein electricity is electrochemically generated by feeding fuel and an oxidant to a fuel chamber arranged on the anode side and an oxidant chamber arranged on the cathode side, respectively, said electrolytic body comprising an electrolyte of alkali metal carbonate, an electrolyte-retaining member for retaining the electrolyte and an inorganic binder of an alkali metal metaphosphate represented by the formula MPO 3 wherein M designates an alkali metal.
Claim 2
Dependent Claim
91 words
A fused carbonate type fuel cell comprising an electrolytic body holding an electrolyte therein which is arranged between an anode and a cathode, wherein electricity is electrochemically generated by feeding fuel and an oxidant to a fuel chamber arranged on the anode side and an oxidant chamber arranged on the cathode side, respectively, said electrolytic body comprising an electrolyte of alkali metal carbonate, an electrolyte-retaining member for retaining the electrolyte and an inorganic binder of an alkali metal metaphosphate represented by the formula MPO 3 wherein M designates an alkali metal.
Claim 3
Dependent Claim
16 words
A fused carbonate fuel cell according to claim 1, wherein the electrolyte-retaining member is lithium aluminate.
Claim 4
Dependent Claim
15 words
A fused carbonate fuel cell according to claim 1, wherein the electrolyte-retaining member is magnesia.
Claim 5
Dependent Claim
29 words
A fused carbonate fuel cell according to claim 1, wherein the alkali metal metaphosphate is lithium metaphosphate and the electrolyte is a mixture of lithium carbonate and potassium carbonate.
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) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |