| abstract |
The non-aqueous electrolyte 2 has excellent flexibility and binding properties, can effectively reduce the internal resistance of the non-aqueous electrolyte secondary battery, and can effectively improve the charge / discharge cycle characteristics. A positive electrode material for a secondary battery is provided. Including a positive electrode active material and a binder, The binder comprises a structural unit (A) derived from a (meth) acrylate monomer, a structural unit (B) derived from an ethylenically unsaturated monomer containing a carboxylic acid group, and a polyfunctional (meth) having 5 or less functional groups. A copolymer comprising a structural unit (C) derived from an acrylate monomer, Positive electrode material substantially free of thickener. |