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AssigneeGM Global Technology Operations LLC
InventorsBradley R. Frieberg, Xiaosong Huang
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Methods for forming battery cells include providing a porous polymeric membrane (PPM), imbibing the PPM with a plasticizing solution comprising plasticizers and lithium salts to form a solid gel electrolyte film, and disposing the solid gel electrolyte film between an anode and a cathode. The PPM can be provided as a coating on the anode or the cathode. The plasticizers can be triethylene glycol dimethyl ether (triglyme), tetraethylene glycol dimethyl ether, and triethyl phosphate. The salts can be LiBF4, LiClO4, LiPF6, LiAsF6, LiTf, LiFSI, LiTFSI, and LIBOB. The plasticizer solution can be 17.5 wt. % to 27.5 wt. % LiTFSI and 72.5 wt. % to 82.5 wt. % triglyme. The plasticizer solution can be 56 wt. % to 66 wt. % LiTFSI and 33.5 wt. % to 43.5 wt. % triglyme. The plasticizer solution can be 16 wt. % to 26 wt. % LiTFSI, 9 wt. % to 19 wt. % triglyme, and 55 wt. % to 75 wt. % triethyl phosphate.
A method for forming a battery cell, the method comprising:
The method of claim 17, wherein the plasticizer solution comprises 17.5 wt. % to 27.5 wt. % LiTFSI and 72.5 wt. % to 82.5 wt. % triethylene glycol dimethyl ether.
The method of claim 17, wherein the plasticizer solution comprises 56 wt. % to 66 wt. % LiTFSI and 33.5 wt. % to 43.5 wt. % triethylene glycol dimethyl ether.
The method of claim 17, wherein the plasticizer solution comprises 16 wt. % to 26 wt. % LiTFSI, 9 wt. % to 19 wt. % triethylene glycol dimethyl ether, and 55 wt. % to 75 wt. % triethyl phosphate.
A method for forming a solid gel electrolyte membrane for a battery cell, the method comprising:
Dependencies are inferred from the claim text.