ELECTROLYTE FORMULATIONS FOR LITHIUM ION BATTERIES

摘要

Electrolyte formulations including additives or combinations of additives. The electrolyte formulations are useful in lithium ion battery cells having lithium titanate anodes. The electrolyte formulations provide low temperature power performance and high temperature stability in such lithium ion battery cells.

主权项

1. A lithium ion battery cell, comprising:
a first electrode; a second electrode comprising a lithium titanate active material; and an electrolyte formulation comprising LiPF6 and comprising a first additive, wherein the first additive comprises tris(2,2,2-trifluoroethyl)borate, and a second additive, wherein the second additive comprises a fluorinated compound other than tris(2,2,2-trifluoroethyl)borate.