▎ 摘　　要

NOVELTY - Anode active material comprises lithium cobalt oxide and nickel-manganese binary materials in a ratio of (0.5-0.85):(0.15-0.5). The particle size of the lithium cobaltate is larger than the particle size of the nickel-manganese binary material. USE - Used as anode active material. ADVANTAGE - The material: avoids the current high production cost of lithium cobalt oxide batteries, and the material structure of nickel-manganese binary materials is unstable and difficult to process due to the high nickel content; has excellent high temperature performance and higher energy density, and low cost. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: 1 anode sheet; 2 preparing the anode active material; 3 lithium ion battery; and 4 electronic device.