▎ 摘　　要

NOVELTY - Nanocomposite binder comprises graphene dispersed in polymer resin. USE - The nanocomposite binder is useful in an electrode mixture of a lithium secondary battery (claimed). ADVANTAGE - The nanocomposite binder has strong binding force and high mechanical property and conductivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) manufacturing the nanocomposite binder comprising oxidizing graphene using an acid solution, filtering the solution, vacuum drying, and performing ultrasound treatment; and (2) a lithium secondary battery comprising the cathode mixture consisting of an anode active material including silicon, tin-based and graphite system.