US4133856A
Expired / Lapsed
US
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Process for producing a positive electrode for a non-aqueous cell
Assignee: Sanyo Electric Co Ltd
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Filing: 1977-08-31
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Granted: 1979-01-09
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Expires: 1997-08-31
Abstract
Abstract A process for preparing positive electrodes for non-aqueous cells is provided. Manganese dioxide is heat treated at a temperature of from 350 - 430° C; the treated manganese dioxide is mixed with a conductive agent and binder and the mixture molded; and the molding is heat treated at a temperature of from 200 - 350° C. The process provides positive electrodes for non-aqueous cells having excellent discharge characteristics.
Inventors
- 👤 Hironosuke Ikeda
- 👤 Mitsunori Hara
- 👤 Satoshi Narukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:07
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M4/08; H01M4/36; H01M4/48; H01M4/50; H01M4/502; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
58 words
A process for producing a positive electrode for a non-aqueous cell comprising heat-treating manganese dioxide at a temperature within the range of 350-430° C.; combining the treated manganese dioxide with a conductive agent and a binder; molding the resultant mixture; and heat-treating the resultant molding at a temperature within the range of 200-350° C. to form said electrode.
Claim 2
Dependent Claim
58 words
A process for producing a positive electrode for a non-aqueous cell comprising heat-treating manganese dioxide at a temperature within the range of 350-430° C.; combining the treated manganese dioxide with a conductive agent and a binder; molding the resultant mixture; and heat-treating the resultant molding at a temperature within the range of 200-350° C. to form said electrode.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the heat-treatment of the manganese dioxide is carried out at least for two hours.
Claim 4
Dependent Claim
12 words
The process of claim 2 wherein the conductive agent is acetylene black.
Claim 5
Dependent Claim
10 words
The process of claim 3 wherein the binder is polytetrafluoroethylene.
Claim 6
Dependent Claim
18 words
The process of claim 4 wherein heat treatment of the molding is carried out at least one hour.
Claim 7
Dependent Claim
18 words
The process of claim 5 wherein the heat treatment temperature of the manganese dioxide is about 375° C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |