Patent ID: 9634352
Date: 2017-04-25
CPC Classifications: B82Y,H01M,Y02E,Y02P,Y10T

Claim:
1. A method for making lithium ion battery comprising: providing a cathode material layer and an anode material layer, wherein providing the cathode material layer comprises: forming a cathode current collector on a surface of the cathode material layer to obtain a cathode electrode, wherein the cathode current collector comprises a graphene layer and a carbon nanotube layer stacked with the graphene layer; the carbon nanotube layer is located on a surface of the cathode material layer, the graphene layer located on a surface of the carbon nanotube layer, and the carbon nanotube layer is sandwiched between the cathode material layer and the graphene layer; and the graphene layer comprises at least one graphene, the graphene is a one-atom-thick planar sheet of SP forming an anode current collector on a surface of the anode material layer to obtain an anode electrode; applying a separator between the cathode electrode and the anode electrode thereby forming a battery cell; encapsulating at least one battery cell in an external encapsulating shell; and injecting an electrolyte solution into the external encapsulating shell.