▎ 摘　　要

NOVELTY - Current collector (12) comprises: a plastic support film (122); and a graphene film (124) covering on at least one surface of the plastic support film. USE - The current collector is useful in an electrode, which is useful in an electrochemical cell (all claimed) such as lithium ion battery, supercapacitor or nickel-cadmium battery. ADVANTAGE - The current collector: utilizes the plastic support film, which has small density and exhibits improved corrosion resistance, hence decreases the weight and increases the life of the electrochemical cell; exhibits excellent conductivity and stability; and utilizes the graphene that directly contacts the electrode material layer, thus decreasing a contact resistance between the current collector and the electrode material layer. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an electrochemical cell electrode, comprising: the current collector; and an electrode material layer covering on at least one surface of the current collector, where the graphene film is in contact with the electrode material layer. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the graphene film coated on the plastic support film in the current collector. Current collector (12) Plastic support film (122) Graphene film (124)