Aspects of the disclosure include copper-graphene (Cu-Gr) multilayer composite (CGMC) current collectors and methods of manufacturing the same. An exemplary vehicle includes an electric motor and a battery pack electrically coupled to the electric motor. The battery pack includes a battery cell with a cell pouch having therein a plurality of stacked anode current collectors alternating with a plurality of stacked cathode current collectors, and an active material dispersed within the cell pouch to cover the current collectors. Each of the anode current collectors is a CGMC current collector including a copper foil substrate having a top surface and a bottom surface. The copper foil substrate is pure copper. A graphene layer is directly on at least one of the top surface and the bottom surface of the copper foil substrate and a plated copper layer is directly on the graphene layer.

A continuous process for manufacturing electrical current collectors for primary and secondary batteries by electrochemical deposition, comprising i) providing a first roll and a second roll for winding a continuous electrically conductive substrate co-acting as a working electrode, wherein depending on polarity the working electrode can act as an anode or a cathode, wherein the substrate has first and second parallel sides, a first side whereat deposition or partial dissolution occur, and a second side acting as a counter electrode to close a circuit.

An electrochemical device includes a negative electrode sheet, the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is located on the negative electrode current collector. The negative electrode current collector includes a copper foil, and a (220) crystal face peak area percentage of the copper foil is 15% to 21%. Using the copper foil with a (220) crystal face peak area percentage of 15% to 21% as the negative electrode current collector can increase the impact pass rate of the electrochemical device, thereby improving the safety performance of the electrochemical device.