Patent ID: 8603674

Claim:
A composition for an electrode of a nonaqueous electrolyte secondary battery, the composition comprising an active material and a binder resin, wherein the binder resin comprises a vinylpyrrolidone-based polymer, and the hydroxyl group equivalent of the vinylpyrrolidone-based polymer is within the range of 250 to 2500; wherein hydroxyl group equivalent means the molecular weight per hydroxyl group in the polymer calculated according to the following equation: { Hf ×(100/ Hw )}/ Hn wherein Hf represents the molecular weight of monomer-giving hydroxyl groups in the polymer, Hn represents the number of hydroxyl groups contained in the monomer, and Hw represents the initial weight percentage (%) of the monomer serving as a source of hydroxyl groups in the polymer; and wherein “vinylpyrrolidone-based polymer” means a hydroxyl group-containing polyvinylpyrrolidone.