▎ 摘　　要

NOVELTY - A current collector comprises a conductive thin film, and a graphene layer coated on at least one surface of the conductive thin film. The graphene layer comprises 5 or less single graphene layers. USE - Current collector use in lithium-ion battery and supercapacitor (all claimed) for electric vehicles. ADVANTAGE - The current collector improves capacity stability and life stability of the battery at high power density. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of current collector; (2) lithium-ion battery; and (3) supercapacitor, which comprises the current collector, and an electrode active material layer containing an electrode active material, a conductive material and a binder formed on the graphene layer.