▎ 摘　　要

NOVELTY - A composite material comprises 30-60% graphene and dilithium rhodizonate salt composite. USE - Composite material for use in energy storage device as a positive electrode material, and accumulator of lithium-ion battery (all claimed). ADVANTAGE - The material can be prepared with improved production efficiency, in simple, easy and cost effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing composite material, which involves obtaining a graphene, and formulating as a suspension, mixing the graphene with dilithium rhodizonate salt suspension solution, and drying under vacuum to give obtain finished product.