US4684583A
Expired / Lapsed
US
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Electrochemical cell
Assignee: Yardney Technical Products Inc
•
Filing: 1986-10-16
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Granted: 1987-08-04
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Expires: 2006-10-16
Abstract
Abstract A lithium/oxyhalide electrochemical cell in which the lithium anode electrode is coated with a cured epoxy resin film.
Inventors
- 👤 Keith A. Klinedinst
- 👤 Richard A. Gary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:34
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M4/08; H01M4/12; H01M6/00; H01M6/14
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
60 words
An electrochemical cell comprising an oxidizable anode electrode; a cathode current electrode; and an electrolytic solution, in contact with the anode electrode and the cathode current collector, comprising a reducible liquid cathode material and an electrolyte solute dissolved therein; the surface of the anode electrode in contact with the electrolytic solution being coated with a layer of cured epoxy resin.
Claim 2
Dependent Claim
60 words
An electrochemical cell comprising an oxidizable anode electrode; a cathode current electrode; and an electrolytic solution, in contact with the anode electrode and the cathode current collector, comprising a reducible liquid cathode material and an electrolyte solute dissolved therein; the surface of the anode electrode in contact with the electrolytic solution being coated with a layer of cured epoxy resin.
Claim 3
Dependent Claim
23 words
An electrochemical cell in accordance with claim 1 wherein said cured epoxy resin is a cured bisphenol-A resin or a cured tetrafunctional resin.
Claim 4
Dependent Claim
28 words
An electrochemical cell in accordance with claim 2 wherein said oxidizable anode electrode includes a material selected from the group consisting of alkali metals and alkaline earth metals.
Claim 5
Dependent Claim
32 words
An electrochemical cell in accordance with claim 3 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 6
Dependent Claim
18 words
An electrochemical cell in accordance with claim 4 wherein said cured epoxy resin is a cured bisphenol-A/epichlorohydrin resin.
Claim 7
Dependent Claim
29 words
An electrochemical cell in accordance with claim 5 wherein said layer of cured epoxy resin is formed by curing a coating of bisphenol-A/epichlorohydrin resin combined with a curing agent.
Claim 8
Dependent Claim
37 words
An electrochemical cell in accordance with claim 6 wherein said curing agent is a material selected from the group consisting of linear polyamines, aromatic amines, amine adducts, polyamides, amidoamines, acid anhydrides, Lewis acid complexes, and combinations thereof.
Claim 9
Dependent Claim
26 words
An electrochemical cell in accordance with claim 7 wherein said oxidizable anode electrode comprises lithium metal; and the reducible liquid cathode material is a liquid oxyhalide.
Claim 10
Dependent Claim
20 words
An electrochemical cell in accordance with claim 8 wherein the reducible liquid cathode material is thionyl chloride or sulfuryl chloride.
Claim 11
Independent Claim
36 words
The method of reducing passivation of an oxidizable anode electrode used in an electrochemical cell having a reducible liquid cathode material comprising providing on the surface of the anode electrode a layer of cured epoxy resin.
Claim 12
Independent Claim
36 words
The method of reducing passivation of an oxidizable anode electrode used in an electrochemical cell having a reducible liquid cathode material comprising providing on the surface of the anode electrode a layer of cured epoxy resin.
Claim 13
Dependent Claim
53 words
The method in accordance with claim 10 comprising prior to assembly of the electrochemical cell coating said anode electrode with an epoxy resin and a curing agent for the epoxy resin; and curing the epoxy resin to a thermoset state to form an adherent layer of cured epoxy resin on said anode electrode.
Claim 14
Dependent Claim
19 words
The method in accordance with claim 11 wherein said epoxy resin in a bisphenol-A resin or a tetrafunctional resin.
Claim 15
Dependent Claim
28 words
The method cell in accordance with claim 12 wherein said oxidizable anode electrode includes a material selected from the group consisting of alkali metals and alkaline earth metals.
Claim 16
Dependent Claim
32 words
The method cell in accordance with claim 13 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 17
Dependent Claim
15 words
The method in accordance with claim 14 wherein said epoxy resin is a bisphenol-A/epichlorohydrin resin.
Claim 18
Dependent Claim
36 words
The method in accordance with claim 15 wherein said curing agent is a material selected from the group consisting of linear polyamines, aromatic amines, amine adducts, polyamides, amidoamines, acid anhydrides, Lewis acid complexes, and combinations thereof.
Claim 19
Dependent Claim
26 words
The method cell in accordance with claim 16 wherein said oxidizable anode electrode comprises lithium metal; and the reducible liquid cathode material is a liquid oxyhalide.
Claim 20
Dependent Claim
19 words
The method in accordance with claim 17 wherein the reducible liquid cathode material is thionyl chloride or sulfuryl chloride.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |