| abstract |
PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte secondary battery using a high capacity negative electrode material and having excellent charge / discharge cycle characteristics. SOLUTION: A negative electrode mixture layer containing a negative electrode mixture layer containing an active material and a binder is provided on one side or both sides of a current collector. As the binder, an alkali salt of polyacrylic acid, carboxymethyl cellulose, or polyvinyl alcohol The ratio of at least one selected from carboxymethylcellulose and polyvinyl alcohol is 10 parts by mass or more and 80 parts by mass or less with respect to 100 parts by mass of the alkali salt of polyacrylic acid. As the active material, graphite and Non-water characterized by containing a material represented by the composition formula SiOx (wherein the atomic ratio x of O to Si is 0.5≰x≰1.5), Si or a Si alloy. The said subject is solved with an electrolyte secondary battery. [Selection figure] None |