Patent ID: 11955639
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 11:
12. A method of making a solid-state electrochemical cell that cycles lithium ions, the method comprising:
preparing a mixture including an ionic conductor precursor, an organophosphate, and a non-polar organic solvent;
applying the mixture to at least one surface of an electrode;
removing at least a portion of the non-polar organic solvent from the mixture to form a coating comprising the organophosphate on the at least one surface of the electrode, the coating comprising an ion-conductor disposed in an organic matrix comprising the organophosphate, the ion-conductor selected from the group consisting of: LiNO3, Li3PO4, Li3P, Li2PO2N (UPON), Li3PS4, Li3ClO, LiF, Li2S, Li3N, ZnO, Al2O3, SnO2, Au, Si, Ge, Mg, Al, In, polyethylene oxide (PEO), polypropylene (PP), 1-butyl-3-methylimidazolium-bis(fluorosulfonyl)imide (BMIM-FSI), particulate graphite, acetylene black, carbon fibers, carbon nanotubes, graphene, and combinations thereof;
positioning the electrode adjacent a solid-state electrolyte such that the coating is disposed between the electrode and the solid-state electrolyte; and
pressing the electrode and the solid-state electrolyte together such that the coating forms an interfacial layer.