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US 5,462,566 AGranted
High capacity cathodes for secondary cells
AssigneeMoltech Corporation
InventorTerje A. Skotheim
Life of this patent
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Abstract
The present invention relates to an electric current producing cell which contains an anode, a polymer electrolyte which is chemically inert with respect to the anode and the cathode, and a composite cathode having an organo-sulfur compound as a cathode active material, a conjugated polymer for the transport of electrons and a polymer electrolyte for the transport of ions.
Claims12
A method of forming a composite cathode which comprises:
- coating an electrically conducting cathode substrate with a mixture comprising an amount of poly(carbon disulfide) effective to provide cathode activity, an amount of a p-doped conjugated polymer effective to transport electrons and enhance voltage against an anode, and an amount of an electrolyte effective to transport ions.
A method of forming a solid state rechargeable battery which comprises:
- (a) providing a solid anode formed from material selected from the group consisting of one or more alkali metals, a mixture of alkali metals, one or more alkaline earth metals, alkali metal intercalated carbon, composites of an n-doped conjugated polymer and an alkali metal, composites of an n-doped conjugated polymer and an alkali metal alloy, and an alkali metal with a film of n-doped conjugated polymer interposed between said alkali metal and an electrolyte;
- (b) providing a composite cathode formed by coating a current collecting cathode substrate with a mixture comprising an amount of poly(carbon disulfide) effective to provide cathode activity, an amount of a p-doped conjugated polymer effective to transport electrons and enhance voltage against an anode, and an amount of a polymer electrolyte effective to transport ions;
- (c) enclosing between said anode and said cathode a further electrolyte selected from the group consisting of solid polymer electrolytes, single-ion conducting polymer electrolytes and gel polymer electrolytes.
A method of forming an electric current producing cell which comprises:
- (a) providing an anode;
- (b) providing a composite cathode containing poly(carbon disulfide) as cathode active material;
- a p-doped conjugated polymer which enhances the cell voltage against the anode and provides transport of electrons;
- and an electrolyte for the transport of ions;
- and
- (c) providing a further electrolyte which is chemically inert with respect to said anode and said cathode and which permits the transportation of ions between said anode and said cathode.
3 more elements
Dependencies are inferred from the claim text.