Patent ID: 11876179
Assignee: ENEVATE CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An energy storage device comprising:
a negative electrode and a positive electrode, wherein the negative electrode is a Si-based electrode;
a separator between the negative electrode and the positive electrode; and
an electrolyte composition; wherein said electrolyte composition comprises:
an alkoxyethane based compound;
a linear carbonate;
an unsubstituted or fluorine substituted cyclic carbonate; and
a Li-containing salt; and
wherein the alkoxyethane based compound is selected from the group consisting of 1,1,2,2-Tetrafluoro-1,2-dimethoxyethane; 1-fluoro-1,2-dimethoxy-ethane; 1,1,2,2-tetrafluoro-1,2-bis(trifluoromethoxy)ethane; 1,1,2,2-tetrafluoro-1,2-bis(1,1,2,2,2-pentafluoroethoxy)ethane and 1,1,2,2-tetrafluoro-1,2-bis(1,2,2-trifluoroethenoxy)ethane; and wherein said alkoxyethane based compound has a concentration of about 0.1 to about 40% by weight.