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US4769296A
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Batteries comprising high energy and power density methanol/air fuel cells
Assignee: BASF SE
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Filing: 1987-11-12
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Granted: 1988-09-06
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Expires: 2007-11-12
Abstract
Abstract In a battery composed of methanol/air fuel cells which in turn are composed of a cathode, an anode and a CO 2 -permeable anion exchanger membrane as electrolyte, a plurality of cathodes and anodes are in a parallel arrangement in a common cathode compartment and anode compartment respectively.
Inventors
- 👤 Hans-Josef Sterzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:47
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/10; H01M8/1009; H01M8/24; H01M8/241; H01M8/242; H01M2300/00; H01M2300/0017; H01M2300/0065; H01M2300/0082; H01M8/0202; H01M8/1016; H01M8/1018; H01M8/102; H01M8/1023; H01M8/1058; H01M8/106; H01M8/1069; H01M8/1086; H01M8/1088; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
48 words
A battery composed of methanol/air fuel cells which in turn are composed of a cathode, and anode and a CO 2 -permeable anion exchanger membrane as electrolyte, wherein a plurality of cathodes and anodes are in a parallel arrangement in a common cathode compartment and anode compartment, respectively.
Claim 2
Dependent Claim
48 words
A battery composed of methanol/air fuel cells which in turn are composed of a cathode, and anode and a CO 2 -permeable anion exchanger membrane as electrolyte, wherein a plurality of cathodes and anodes are in a parallel arrangement in a common cathode compartment and anode compartment, respectively.
Claim 3
Dependent Claim
39 words
A battery as defined in claim 1, wherein the cathode compartments are bounded in each case by two cathodes of successive methanol/air fuel cells and the anode compartments in each case by two anodes of successive methanol/air fuel cells.
Claim 4
Dependent Claim
22 words
A battery as defined in claim 1, wherein the off-leads of the cathodes and of the anodes have a honey comb structure.
Claim 5
Dependent Claim
14 words
A battery as defined in claim 1, wherein the off-leads are made of nickel.
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) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |