US4137371A
Expired / Lapsed
US
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Electrochemical zinc-oxygen cell
Assignee: Electrochemische Energieconversie NV
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Filing: 1977-07-05
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Granted: 1979-01-30
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Expires: 1997-07-05
Abstract
Abstract The invention relates to an electrochemical zinc-oxygen cell comprising an oxygen electrode containing a porous electrically conductive layer, a zinc electrode, a diffusion of zincate restricting membrane, preferably an ionexchanging membrane, which is joined directly to the oxygen electrode between the porous layer of this electrode and the zinc electrode, and an electrolyte space between the membrane and the zinc electrode containing a liquid basic electrolyte. By preference the membrane is only slightly permeable for the electrolyte. With this cell no poisoning of the electrochemically active material occurs.
Inventors
- 👤 Alain P. O. Blanchart
- 👤 Gustaaf J. F. Spaepen
- 👤 Constantine W. M. V. A. De Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:48
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M4/00; H01M4/86
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
49 words
Electrochemical zinc-oxygen cell comprised of, a. an oxygen electrode comprised of a porous electrically conductive layer and an ion-exchanging layer, said layers containing an identical binder, b. a zinc electrode; and c. an electrolyte space between said ion-exchanging layer and said zinc electrode which contains a liquid basic electrolyte.
Claim 2
Dependent Claim
49 words
Electrochemical zinc-oxygen cell comprised of, a. an oxygen electrode comprised of a porous electrically conductive layer and an ion-exchanging layer, said layers containing an identical binder, b. a zinc electrode; and c. an electrolyte space between said ion-exchanging layer and said zinc electrode which contains a liquid basic electrolyte.
Claim 3
Dependent Claim
13 words
Zinc-oxygen cell of claim 1 wherein the ion-exchanging layer is a cation-exchanging layer.
Claim 4
Dependent Claim
16 words
Zinc-oxygen cell of claim 2 wherein the ion-exchanging layer is only slightly permeable to the electrolytes.
Claim 5
Dependent Claim
14 words
Zinc-oxygen cell according to claim 3, wherein the common binder is a polymeric material.
Claim 6
Dependent Claim
11 words
Zinc-oxygen cell according to claim 4, wherein the binder is poly(tetrafluoroethylene).
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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |