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Patent US4540641A successfully refreshed from Google Patents.
US4540641A
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US
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Electrochemical cell
Assignee: Yardney Technical Products Inc
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Filing: 1983-07-18
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Granted: 1985-09-10
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Expires: 2003-07-18
Abstract
Abstract A primary electrochemical cell having an oxidizable active anode material, a cathode current collector, and an electrolytic solution comprising a liquid cathode material and an electrolyte solute dissolved therein. The cathode current collector includes a polymer selected from the group consisting of polyenes, polyphenylenes, polyheterocyclics, mixtures thereof, copolymers thereof, and cross linked polymers thereof.
Inventors
- 👤 Robert C. McDonald
- 👤 Wei-Tao Wang
- 👤 Peter Cukor
- 👤 Michael F. Rubner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:53
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/668; H01M4/36; H01M4/60; H01M4/86; H01M4/90; H01M4/9008; H01M6/00; H01M6/14; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
74 words
An electrochemical cell comprising an oxidizable active anode material; a cathode current collector consisting of a mixture of a polymer and carbon black, and a supporting substrate; said polymer being selected from the group consisting of polyacetylenes, polyphenylenes, polyheterocyclics, mixtures thereof, copolymers thereof, and cross linked polymers thereof; and an electrolytic solution, in contact with the anode material and cathode current collector, comprising a reducible liquid cathode material and an electrolyte solute dissolved therein.
Claim 2
Dependent Claim
74 words
An electrochemical cell comprising an oxidizable active anode material; a cathode current collector consisting of a mixture of a polymer and carbon black, and a supporting substrate; said polymer being selected from the group consisting of polyacetylenes, polyphenylenes, polyheterocyclics, mixtures thereof, copolymers thereof, and cross linked polymers thereof; and an electrolytic solution, in contact with the anode material and cathode current collector, comprising a reducible liquid cathode material and an electrolyte solute dissolved therein.
Claim 3
Dependent Claim
26 words
An electrochemical cell in accordance with claim 1 wherein the oxidizable anode material is selected from the group consisting of alkali metals and alkaline earth metals.
Claim 4
Dependent Claim
32 words
An electrochemical cell in accordance with claim 2 wherein the reducible liquid cathode material is selected from the group consisting of fluid oxyhalides, fluid non-metallic oxides, fluid non-metallic halides, and mixtures thereof.
Claim 5
Dependent Claim
26 words
An electrochemical cell in accordance with claim 1 wherein said mixture of a polymer and carbon black contains more than 10% by weight of said polymer.
Claim 6
Dependent Claim
25 words
An electrochemical cell in accordance with claim 4 wherein the oxidizable anode material comprises lithium metal; and the reducible liquid cathode material comprises thionyl chloride.
Claim 7
Dependent Claim
73 words
An electrochemical cell comprising an oxidizable active anode material; a cathode current collector consisting of a layer of a polymer adherent to an inert electrically-conductive substrate; said polymer being selected from the group consisting of polyacetylenes, polyphenylenes, polyheterocyclics, mixtures thereof, copolymers thereof, and cross linked polymers thereof; and an electrolytic solution, in contact with the anode material and cathode current collector, comprising a reducible liquid cathode material and an electrolyte solute dissolved therein.
Claim 8
Dependent Claim
73 words
An electrochemical cell comprising an oxidizable active anode material; a cathode current collector consisting of a layer of a polymer adherent to an inert electrically-conductive substrate; said polymer being selected from the group consisting of polyacetylenes, polyphenylenes, polyheterocyclics, mixtures thereof, copolymers thereof, and cross linked polymers thereof; and an electrolytic solution, in contact with the anode material and cathode current collector, comprising a reducible liquid cathode material and an electrolyte solute dissolved therein.
Claim 9
Dependent Claim
26 words
An electrochemical cell in accordance with claim 6 wherein the oxidizable anode material is selected from the group consisting of alkali metals and alkaline earth metals.
Claim 10
Dependent Claim
32 words
An electrochemical cell in accordance with claim 7 wherein the reducible liquid cathode material is selected from the group consisting of fluid oxyhalides, fluid non-metallic oxides, fluid non-metallic halides, and mixtures thereof.
Claim 11
Dependent Claim
25 words
An electrochemical cell in accordance with claim 8 wherein the oxidizable anode material comprises lithium metal; and the reducible liquid cathode material comprises thionyl chloride.
Claim 12
Dependent Claim
18 words
An electrochemical cell in accordance with claim 8 wherein said inert electrically-conductive substrate is a thin metal foil.
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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |