Non-Aqueous Electrolytic Solutions and Electrochemical Cells Comprising the Same

摘要

A lithium secondary battery having reduced swelling tendency includes an electrolytic solution. The electrolytic solution includes a lithium salt, a cyclic carbonate, a linear asymmetric carbonate, a third carbonate, a sultone and a phosphazene compound.

主权项

1. A secondary battery comprising:
a) an anode, b) a cathode, and, c) an electrolytic solution, comprising
i) a lithium salt,ii) a cyclic carbonate,iii) a linear carbonate,iv) ethoxypentafluororcyclotriphophazene or phenoxy-pentafluorocyclotriphoshazene andv) propane sultone or a combination of propane sultone and vinylene carbonate.