US4451543A
Expired / Lapsed
US
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Rechargeable zinc/manganese dioxide cell
Assignee: Ford Motor Co
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Filing: 1983-09-29
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Granted: 1984-05-29
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Expires: 2003-09-29
Abstract
Abstract A rechargeable cell is disclosed which is characterized in the following manner. A positive electrode is formed from a manganese oxide electrode material. This manganese oxide electrode material contains a heavy metal selected from the group comprising lead, bismuth, and mixtures of lead and bismuth. The cell also contains a negative electrode of zinc. A separator is provided between the positive electrode and the negative electrode. An alkaline electrolyte consisting essentially of an alcohol and an alkaline hydroxide is also contained in the rechargeable cell in contact with both the positive electrode and the negative electrode.
Inventors
- 👤 Matthew A. Dzieciuch
- 👤 Halina S. Wroblowa
- 👤 Joseph T. Kummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:01
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; H01M10/00; H01M10/24; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
A rechargeable cell which is characterized by: a positive electrode formed from a manganese oxide electrode material which contains a heavy metal selected from the group consisting of lead, bismuth, and mixtures of bismuth and lead; a negative electrode of zinc; a separator between said positive electrode and said negative electrode; and an alkaline electrolyte consisting essentially of an organic alcohol material and an alkaline hydroxide in contact with both said positive electrode and said negative electrode.
Claim 2
Dependent Claim
77 words
A rechargeable cell which is characterized by: a positive electrode formed from a manganese oxide electrode material which contains a heavy metal selected from the group consisting of lead, bismuth, and mixtures of bismuth and lead; a negative electrode of zinc; a separator between said positive electrode and said negative electrode; and an alkaline electrolyte consisting essentially of an organic alcohol material and an alkaline hydroxide in contact with both said positive electrode and said negative electrode.
Claim 3
Dependent Claim
20 words
The rechargeable cell of claim 1, in which said organic material is methanol and said alkaline hydroxide is potassium hydroxide.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |