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US 5,665,492 AGranted
Composite Electrode including organic disulfide compound, method of producing the same, and lithium secondary battery utilizing the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorTadashi Sotomura
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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.
Claims14
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.
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.
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.
2 more elements
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.
2 more elements
Dependencies are inferred from the claim text.