Patent ID: 8609286
Filing Date: 2013-12-17
Classification: H01M,Y02E,Y02P,Y02T

Abstract:
1. A nonaqueous electrolyte secondary battery comprising: a cathode capable of being electrochemically doped/dedoped with lithium; an anode capable of being electrochemically doped/dedoped with lithium; and an electrolyte placed between the cathode and the anode; wherein the electrolyte contains at least one of fluoro ethylene carbonate represented by Chemical Formula (1) and difluoro ethylene carbonate represented by Chemical Formula (2) as a solvent and the ratio of a discharge capacity B during discharging at a 5C rate to a discharge capacity A during discharging at a 0.2C rate ((B/A)×100) is 80% or more, and wherein the battery excludes an element configured to block an electric current flow in the battery when a temperature of the battery reaches a predetermined temperature.