▎ 摘　　要

NOVELTY - A graphene-based lithium-ion battery cathode is obtained by coating cathode slurry on copper foil at a thickness of 50-200 microns. The cathode slurry contains 35-50 pts. wt. graphite, 10-25 pts. wt. graphene, 0.5-2.5 pts. wt. binder, 0.25-2 pts. wt. thickening agent and 70-90 pts. wt. dispersing medium. The binder is polystyrene-polyisoprene-polystyrene block-type copolymer latex. USE - Graphene-based cathode is used for lithium-ion battery. ADVANTAGE - The graphene-based lithium-ion battery cathode has excellent strength and flexibility, and is prepared by simple, easy, environmentally-friendly and economical process. The battery using the cathode has excellent cycle characteristics and energy density. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene-based lithium-ion battery cathode.