NONAQUEOUS ELECTROLYTE BATTERY

摘要

A nonaqueous electrolyte battery that even when an olivine type lithium phosphate is used as a positive electrode active material, has enhanced adherence between the positive electrode active material and positive electrode collector, exhibiting enhanced volume energy density and loading performance. There is provided a nonaqueous electrolyte battery comprising positive electrode (1) containing iron lithium phosphate as a positive electrode active material, negative electrode (2) and nonaqueous electrolyte (4). The positive electrode (1) comprises a positive electrode collector and, superimposed thereon, a positive electrode mixed agent layer composed of a positive electrode active material, a conductive agent and a binder. The positive electrode collector has a thickness of less than 20 mum, and the average surface roughness (Ra) of the side thereof brought into contact with the positive electrode mixed agent layer exceeds 0.026.