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US4128702A
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Cell with N,N-bis (substituted phenyl)-4,4- dipyridinium salt depolarizer
Assignee: Teijin Ltd
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Filing: 1977-11-25
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Granted: 1978-12-05
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Expires: 1997-11-25
Abstract
Abstract A half cell using a halide salt of N,N'-bis(substituted phenyl)-4,4'-dipyridyl as the cathode depolarizer has higher discharge voltage than those conventional cells using other organic compounds. Moreover, the primary cells or the secondary batteries therefrom have higher energy density and flatter discharge curves and thus they are very useful as compact and light cells or batteries. 2,4-Dinitrophenyl and 4-cyanophenyl are preferable as the substituted phenyl group.
Inventors
- 👤 Hiroshi Okaniwa
- 👤 Toshiaki Yatabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:59
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
58 words
In a half-cell using a cathode composition which comprises a mixture of carbon, a depolarizing compound and an electrolyte, the improvement wherein the depolarizing compound has the formula: ##STR8## in which Y is selected from the group consisting of nitro and cyano groups; n is 1 or 2; and X - is Cl - or Br - .
Claim 2
Dependent Claim
58 words
In a half-cell using a cathode composition which comprises a mixture of carbon, a depolarizing compound and an electrolyte, the improvement wherein the depolarizing compound has the formula: ##STR8## in which Y is selected from the group consisting of nitro and cyano groups; n is 1 or 2; and X - is Cl - or Br - .
Claim 3
Dependent Claim
16 words
The half-cell as defined in claim 1 wherein said depolarizing compound is N,N'-bis(2,4-dinitrophenyl)-4,4'-dipyridyl dichloride or dibromide.
Claim 4
Dependent Claim
16 words
The half-cell as defined in claim 1 wherein said depolarizing compound is N,N'-bis(4-cyanophenyl)-4,4'-dipyridyl dichloride or dibromide.
Claim 5
Dependent Claim
66 words
In a cell comprising an anode of a highly electropositive metal and a cathode composition which comprises a mixture of carbon, a depolarizing compound and an electrolyte, the improvement wherein the depolarizing compound has the formula: ##STR9## in which Y is selected from the group consisting of nitro and cyano groups; n is 1 or 2; and X - is Cl - or Br - .
Claim 6
Dependent Claim
66 words
In a cell comprising an anode of a highly electropositive metal and a cathode composition which comprises a mixture of carbon, a depolarizing compound and an electrolyte, the improvement wherein the depolarizing compound has the formula: ##STR9## in which Y is selected from the group consisting of nitro and cyano groups; n is 1 or 2; and X - is Cl - or Br - .
Claim 7
Dependent Claim
14 words
The cell as defined in claim 4 wherein said cell is a primary cell.
Claim 8
Dependent Claim
17 words
The primary cell as defined in claim 5 wherein the depolarizing compound is N,N'-bis(2,4-dinitrophenyl)-4,4'-dipyridyl dichloride or dibromide.
Claim 9
Dependent Claim
17 words
The secondary cell as defined in claim 8 wherein the depolarizing compound is N,N'-bis(4-cyanophenyl)-4,4'-dipyridyl dichloride or dibromide.
Claim 10
Dependent Claim
14 words
The cell as defined in claim 4 wherein said cell is a secondary cell.
Claim 11
Dependent Claim
14 words
The cell is defined in claim 4 wherein said cell is a fuel cell.
References Cited (Backward Citations)
US2880122A
Cited
US2993946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |