▎ 摘　　要

NOVELTY - A graphene-coated lithium cobaltate electrode is prepared by (1) thoroughly mixing lithium cobaltate powder, conductive additive, and binder, grinding into a slurry, applying slurry on a current collector, and drying to obtain a lithium cobaltate electrode sheet; (2) dissolving graphene in ethanol to obtain coating solution; (3) immersing lithium cobaltate electrode sheet in coating solution, stirring the coating solution, and taking it out to obtain the coated electrode; (4) placing coated electrode in a blast drying box to dry, placing in vacuum drying box to dry, and cooling. USE - Preparation of graphene-coated lithium cobaltate electrode. ADVANTAGE - The method has a simple process and is capable of forming a graphene coating layer on the electrode surface, suppressing side reactions on the electrode surface, stabilizing the surface structure of the electrode, and improving its cycle performance.