Patent ID: 11515527

Abstract:
A positive electrode imparts secondary battery with low temperature output characteristics, high temperature cycle characteristics and durability against high voltage. A positive electrode of secondary battery includes positive electrode current collector and positive electrode active substance layer on positive electrode current collector. The positive electrode active substance layer contains positive electrode active substance particles and oxide particles which are dispersed in positive electrode active substance layer as separate particles from positive electrode active substance particles. The positive electrode active substance particles each include coating of titanium-containing compound at the surface. The titanium-containing compound in coating is at least one compound selected from group consisting of TiO2, TinO2n−1, wherein n is integer of 3 or more, and oxides containing Li and Ti. The oxide particles include at least one oxide selected from group consisting of TiO2, TimO2m−1, wherein m is integer of 3 or more, and oxides containing Li and Ti.