Patent ID: 11949063
Assignee: GLOBAL GRAPHENE GROUP, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 16:
17. A rechargeable lithium cell comprising:
(a) a cathode having a cathode active material and a first electrolyte in ionic contact with the cathode active material;
(b) an anode having an anode current collector but no anode active material and having no lithium metal when the cell is made, wherein said anode current collector comprises a foil, perforated sheet, or foam of a metal having two primary surfaces wherein at least one primary surface is coated with or protected by a layer of lithiophilic metal, a layer of graphene material, or both, wherein the graphene layer comprises graphene sheets selected from single-layer or few-layer graphene, wherein said few-layer graphene sheets have 2-10 layers of stacked graphene planes having an inter-plane spacing d002 from 0.3354 nm to 0.6 nm as measured by X-ray diffraction and said single-layer or few-layer graphene sheets contain a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 45% by weight of non-carbon elements;
(c) a porous separator electronically separating said anode and said cathode; and
(d) a second electrolyte, comprising a polymer electrolyte in ionic contact with the first electrolyte, wherein the polymer electrolyte is disposed substantially between the anode and the cathode, between the separator and the cathode, and/or between the separator and the anode.