▎ 摘　　要

NOVELTY - Cathode active material comprises homogeneous silicon carbide (SiC) material and graphite, where homogeneous SiC material is silicon carbon material composed of silicon (Si) element and carbon (C) element and has a double continuous phase structure. The graphite is artificial graphite or natural graphite. USE - The cathode active material is useful in cathode sheet for battery i.e., lithium ion battery (claimed). ADVANTAGE - The cathode active material contains homogeneous SiC material which improves cycle performance and has high gram capacity, reduces electrolyte consumption, secondary reactions and cyclic expansion, and has good first effect, low cyclic attenuation, smaller cyclic expansion, improves energy density and cycle service life of the battery, and battery is suitable for large-scale commercial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for cathode sheet, comprising electrode current collector and cathode active material layer coated on at least one side surface of the cathode current collector.