POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

The present invention provides: a positive electrode for non-aqueous electrolyte secondary batteries, wherein the distribution state of an electrically conductive material is optimized to prevent the increase in resistivity and to increase the capacity of a battery; and a non-aqueous electrolyte secondary battery equipped with the positive electrode. The positive electrode for non-aqueous electrolyte secondary batteries comprises a positive electrode current collector and a positive electrode mix layer containing a positive electrode active material, an electrically conductive material and a binder and adhered onto the surface of the positive electrode current collector, wherein particles of the electrically conductive material are dispersed in such a manner that the particles of the electrically conductive material are attached onto the surfaces of particles of the positive electrode active material to form a neck, which is a thin-layer-shaped aggregate composed of a small amount of the particles of the electrically conductive material, between the particles of the positive electrode active material, and wherein the ratio of the applicable maximum capacity relative to the charge capacity of the positive electrode active material is 95% or more when charged at a rate of 0.3 C and discharged at a rate of 0.2 C at 25°C.