LCO@OXIDE@CNT MULTICOMPOSITE CATHODE MATERIAL

A LCO@oxide@CNT multicomposite cathode material which is a plurality of positive particles. Each of the positive particles comprises a composite LCO particle. The composite LCO particle includes a large LCO (lithium cobalt oxide, LiCoO) particle, and a plurality of large LLZO particles and a plurality of small LLZO particles coated on a surface of the large LCO particle. Each of the large LLZO particles and small LLZO particles is formed by a LLZO (LiLaZrO) or a LLZO doped with at least one metal. A first LLZO interphase layer is formed between a bottom of each of the large LLZO particles and the large LCO particle. A second LLZO interphase layer is formed between a bottom of each of the small LLZO particles and the large LCO particle. An outer surface of each of the composite LCO particle is wrapped by a plurality of first carbon nanotubes.