Silicon-based energy storage devices with fluorinated electrolyte formulations

Abstract

Electrolytes and electrolyte additives for energy storage devices comprising fluorinated electrolyte additive compounds are disclosed. The energy storage device comprises a first electrode and a second electrode, where one or both of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive selected from a linear carbonate, a cyclic carbonate, a linear carboxylic ester, a linear ether, a linear acetate, a sulfone, a linear anhydride, a cyclic anhydride, a phosphate, a phosphite, a phosphorus-containing compound, a phosphazene, a cyclic phosphazene, a nitrogen-containing compound, a silicon-containing compound, a sulfur-containing compound, a Li salt compound, a metal salt compound, fluorine salt compound, or combinations thereof, which may be partially or fully fluorinated and may be optionally substituted.