▎ 摘　　要

NOVELTY - A positive electrode composite comprises a positive active material comprising nickel as a main component, and conductive materials (a1,a2) of different sizes to improve conductivity of surface of the positive electrode active material particles, located on surface of the positive electrode active material. The composite comprises 1-10% material (a1) and 5% material (a2). USE - Positive electrode composite is used for lithium secondary battery for smartphone, electric vehicle and motorcycle. ADVANTAGE - The positive electrode composite can improve capacity and output characteristics of lithium secondary battery without increasing nickel content.