1. Overview of the technical route of Japanese lithium battery company 2. Details of the technical route of each company 1 Panasonic-Sanyo Electric Positive electrode material Research and development of lithium manganate doped with nickel, aluminum and other elements of solid solution cathode material, as the cathode material of the battery. At present, the developed cathode materials include nickel-cobalt lithium manganate, nickel-cobalt lithium aluminate, etc., and have been applied on a large scale.