METHOD FOR MANUFACTURING THE SECONDARY BATTERY USING GRAPHENE

摘要

PURPOSE: A method for manufacturing a negative material of a secondary battery is provided to prevent the degradation of electrolyte performance by lowering reactivity with electrolyte and to obtain a secondary battery with improved charge and discharge efficiency. CONSTITUTION: A method for manufacturing a negative material of a secondary battery comprises the steps of: manufacturing pure graphene; mixing 100.0 parts by weight of natural graphite, 2~70 parts by weight graphene and 5~20 parts by weight coal-based pitch; and heat treating the mixed material to prepare a negative material for a secondary battery.