Patent ID: 7018739

Claim:
A positive electrode for a lithium-sulfur battery comprising: a current collector; and a positive active material comprising: a sulfur compound; a conductive agent adhered to said sulfur compound; and a binder comprising first and second binders and at least one polymer included in at least one of the first and second binders, where one of the first and second binders binds said conductive agent to said sulfur compound and the other one of the first and second binders is usable to bind the positive active material to the current collector for the lithium-sulfur battery, wherein said at least one polymer is selected from the group consisting of polyvinylidene fluoride, a copolymer of polyvinylidene fluoride and polyhexafluoropropylene, poly(vinylacetate), poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate), poly(methylmethacrylate-co-ethyl acrylate), polyacrylonitrile, polyvinyl chloride-co-vinyl acetate, polyvinyl alcohol, poly(1-vinylpyrrolidone-co-vinyl acetate), cellulose acetate, polyvinylpyrrolidone, polyacrylate, polymethacrylate, polyolefin, polyurethane, polyvinyl ether, acrylonitrile-butadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene-styrene, and sulfonated styrene/ethylene-butadiene/styrene triblock polymer.