Patent ID: 11870051
Assignee: GLOBAL GRAPHENE GROUP, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 17:
18. A method of improving fast-chargeability of a lithium secondary battery containing an anode, a cathode, a porous separator disposed between said anode and said cathode, and an electrolyte, wherein said method comprises packing particles of an anode active material to form an anode active material layer having interstitial spaces and disposing a lithium ion reservoir in said interstitial spaces, configured to receive lithium ions from said cathode through said porous separator when said battery is charged and to enable said lithium ions to enter said particles of anode active material in a time-delayed manner, wherein said electrolyte is a non-flammable quasi-solid electrolyte comprising a lithium salt dissolved in a mixture of a liquid solvent and a liquid additive having a lithium salt concentration from 1.75 M to 5.0 M so that said electrolyte exhibits a vapor pressure less than 0.01 kPa when measured at 20° C., a vapor pressure less than 60% of the vapor pressure of said liquid solvent alone, a flash point at least 20 degrees Celsius. higher than a flash point of said liquid solvent alone, a flash point higher than 150° C., or no flash point, wherein said liquid additive, different in composition than said liquid solvent, is selected from tris(trimethylsilyl)phosphite (TTSPi), triallyl phosphate (TAP), ethylene sulfate (DTD), 1,3-propane sultone (PS), propene sultone (PES), alkylsiloxane (Si—O), alkylsilane (Si—C), liquid oligomeric siloxane (—Si—O—Si—), or a combination thereof and said liquid additive-to-said liquid solvent ratio in said mixture is from 5/95 to 95/5 by weight, wherein said particles of anode active material are coated with molecules of poly(lithium-4-styrenesulfonate).