Binder for nonaqueous electrolyte secondary cell, binder solution for nonaqueous electrolyte secondary cell, anode mixture for nonaqueous electrolyte secondary cell, and uses thereof

The present invention relates to a binder for a nonaqueous electrolyte secondary cell, a binder solution for the nonaqueous electrolyte secondary cell, and an anode mixture for the nonaqueous electrolyte secondary cell, having excellent adhesiveness, allowing reduction of initial irreversible capacity of the nonaqueous electrolyte secondary cell when manufacturing the cell, having an excellent capacity retention rate during fast discharge, and allowing improvement of charge cycle characteristics, this binder for a nonaqueous electrolyte secondary cell containing at least a polyvinylidene fluoride having an inherent viscosity of 1.2-7 dl/g and a polyvinyl alcohol having saponification of 80-90 mol percent, the polyvinyl alcohol being 5-90 mass percent per the total 100 mass percent of the polyvinylidene fluoride and the polyvinyl alcohol.