US5665492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite Electrode including organic disulfide compound, method of producing the same, and lithium secondary battery utilizing the same
Assignee: Panasonic Holdings Corp
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Filing: 1996-01-23
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Granted: 1997-09-09
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Expires: 2016-01-23
Abstract
Abstract A composite electrode in which a complex of an organic disulfide compound and polyaniline is supported by a substrate of metallic copper or silver is disclosed. Also, a composite electrode in which a composition including an organic disulfide compound, polyaniline and a metallic powder of copper or silver is supported by a conductive substrate is disclosed.
Inventors
- 👤 Tadashi Sotomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:44
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/137; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
79 words
A composite electrode comprising: (a) a substrate made of metallic copper, metallic silver or an alloy including copper or silver as a main component, and (b) a composition supported on said substrate, said composition comprising polyaniline and an organic disulfide compound which contains at least one sulfur-sulfur bond, wherein said sulfur-sulfur bond is cleaved when electrolytically reduced to form a sulfur-metal ion (including proton) bond and said sulfur-metal ion bond is regenerated into said sulfur-sulfur bond when electrolytically oxidized.
Claim 2
Dependent Claim
79 words
A composite electrode comprising: (a) a substrate made of metallic copper, metallic silver or an alloy including copper or silver as a main component, and (b) a composition supported on said substrate, said composition comprising polyaniline and an organic disulfide compound which contains at least one sulfur-sulfur bond, wherein said sulfur-sulfur bond is cleaved when electrolytically reduced to form a sulfur-metal ion (including proton) bond and said sulfur-metal ion bond is regenerated into said sulfur-sulfur bond when electrolytically oxidized.
Claim 3
Dependent Claim
80 words
A composite electrode comprising: (a) an electrically-conductive substrate, and (b) a composition supported on said substrate, said composition comprising polyaniline, a metallic powder of copper, silver or an alloy containing copper or silver as a main component, and an organic disulfide compound which contains at least one sulfur-sulfur bond, wherein said sulfur-sulfur bond is cleaved when electrolytically reduced to form a sulfur-metal ion (including proton) bond and said sulfur-metal ion bond is regenerated into said sulfur-sulfur bond when electrolytically oxidized.
Claim 4
Dependent Claim
80 words
A composite electrode comprising: (a) an electrically-conductive substrate, and (b) a composition supported on said substrate, said composition comprising polyaniline, a metallic powder of copper, silver or an alloy containing copper or silver as a main component, and an organic disulfide compound which contains at least one sulfur-sulfur bond, wherein said sulfur-sulfur bond is cleaved when electrolytically reduced to form a sulfur-metal ion (including proton) bond and said sulfur-metal ion bond is regenerated into said sulfur-sulfur bond when electrolytically oxidized.
Claim 5
Independent Claim
155 words
A method of producing a composite electrode comprising: (1) a first step of dissolving an organic disulfide compound which contains at least one sulfur-sulfur bond in 2-pyrrolidone or N-alkyl-2-pyrrolidone to form a solution, said sulfur-sulfur bond being cleaved when electrolytically reduced to form a sulfur-metal ion (including proton) bond and said sulfur-metal ion bond is regenerated into said sulfur-sulfur bond when electrolytically oxidized, (2) a second step of adding polyaniline to said solution to dissolve said polyaniline, thereby obtaining a homogeneous liquid, (3) a third step of applying said homogeneous liquid on a substrate made of metallic copper, metallic silver or an alloy including copper or silver as a main component to form a layer, and (4) a fourth step of heating said substrate with said layer in a vacuum or in an inert gas atmosphere to obtain on said substrate a solid composition wherein said organic disulfide compound and said polyaniline are homogeneously mixed.
Claim 6
Independent Claim
155 words
A method of producing a composite electrode comprising: (1) a first step of dissolving an organic disulfide compound which contains at least one sulfur-sulfur bond in 2-pyrrolidone or N-alkyl-2-pyrrolidone to form a solution, said sulfur-sulfur bond being cleaved when electrolytically reduced to form a sulfur-metal ion (including proton) bond and said sulfur-metal ion bond is regenerated into said sulfur-sulfur bond when electrolytically oxidized, (2) a second step of adding polyaniline to said solution to dissolve said polyaniline, thereby obtaining a homogeneous liquid, (3) a third step of applying said homogeneous liquid on a substrate made of metallic copper, metallic silver or an alloy including copper or silver as a main component to form a layer, and (4) a fourth step of heating said substrate with said layer in a vacuum or in an inert gas atmosphere to obtain on said substrate a solid composition wherein said organic disulfide compound and said polyaniline are homogeneously mixed.
Claim 7
Independent Claim
178 words
A method of producing a composite electrode comprising: (1) a first step of dissolving an organic disulfide compound which contains at least one sulfur-sulfur bond in 2-pyrrolidone or N-alkyl-2-pyrrolidone to form a solution, said sulfur-sulfur bond being cleaved when electrolytically reduced to form a sulfur-metal ion (including proton) bond and said sulfur-metal ion bond is regenerated into said sulfur-sulfur bond when electrolytically oxidized, (2) a second step of adding a metallic powder of copper, silver or an alloy containing copper or silver as a main component and polyaniline to said solution to disperse said metallic powder and to dissolve said polyaniline, thereby obtaining a mixture wherein said metallic powder is dispersed and said polyaniline is dissolved in said solution, (3) a third step of applying said mixture on an electrically-conductive substrate to form a layer, and (4) a fourth step of heating said substrate with said layer in a vacuum or in an inert gas atmosphere to obtain on said substrate a solid composition wherein said organic disulfide compound, said polyaniline, and said metallic powder are homogeneously mixed.
Claim 8
Independent Claim
178 words
A method of producing a composite electrode comprising: (1) a first step of dissolving an organic disulfide compound which contains at least one sulfur-sulfur bond in 2-pyrrolidone or N-alkyl-2-pyrrolidone to form a solution, said sulfur-sulfur bond being cleaved when electrolytically reduced to form a sulfur-metal ion (including proton) bond and said sulfur-metal ion bond is regenerated into said sulfur-sulfur bond when electrolytically oxidized, (2) a second step of adding a metallic powder of copper, silver or an alloy containing copper or silver as a main component and polyaniline to said solution to disperse said metallic powder and to dissolve said polyaniline, thereby obtaining a mixture wherein said metallic powder is dispersed and said polyaniline is dissolved in said solution, (3) a third step of applying said mixture on an electrically-conductive substrate to form a layer, and (4) a fourth step of heating said substrate with said layer in a vacuum or in an inert gas atmosphere to obtain on said substrate a solid composition wherein said organic disulfide compound, said polyaniline, and said metallic powder are homogeneously mixed.
Claim 9
Dependent Claim
36 words
A method of producing a composite electrode in accordance with claim 4, wherein said second step comprises a step of adding said metallic powder to said solution and then adding said polyaniline to the resultant mixture.
Claim 10
Dependent Claim
23 words
A lithium secondary battery comprising a cathode composed of the composite electrode in accordance with claim 1, a non-aqueous electrolyte, and an anode.
Claim 11
Dependent Claim
23 words
A lithium secondary battery comprising a cathode composed of the composite electrode in accordance with claim 2, a non-aqueous electrolyte, and an anode.
Claim 12
Dependent Claim
13 words
A composite electrode according to claim 1, wherein said substrate includes metallic silver.
Claim 13
Dependent Claim
14 words
A composite electrode according to claim 2, wherein said metallic powder includes metallic silver.
Claim 14
Dependent Claim
12 words
A method according to claim 3, wherein said substrate includes metallic silver.
Claim 15
Dependent Claim
13 words
A method according to claim 4, wherein said metallic powder includes metallic silver.
Claim 16
Dependent Claim
13 words
A method according to claim 5, wherein said metallic powder includes metallic silver.
Claim 17
Dependent Claim
14 words
A lithium secondary battery according to claim 6, wherein said substrate includes metallic silver.
Claim 18
Dependent Claim
15 words
A lithium secondary battery according to claim 7, wherein said metallic powder includes metallic silver.
References Cited (Backward Citations)
US4717634A
Cited
JPS6345769A
Cited
US4939050A
Cited
US4833048A
Cited
US5202202A
Cited
US5362493A
Cited
US5324599A
Cited
JPH04359865A
Cited
US5413882A
Cited
US5441831A
Cited
US5518841A
Cited
US5368959A
Cited
US5460905A
Cited
US5462566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-08 | 2001-03-10 | 2001-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-08 | 2005-03-10 | 2005-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-08 | 2009-03-10 | 2009-09-09 | $7700.00 | Window Closed / Lapsed |