Patent ID: 9184467
Filing Date: 2015-11-10
Classification: H01M,Y02E

Abstract:
1. An electrolyte for use in an electrochemical cell, the electrolyte comprising: a low molecular weight first electrolyte salt having a high salt concentration of at least 0.5 M and a molecular weight less than about 250 grams per mole, wherein the first electrolyte salt comprises one of LiPF a non-fluorinated linear carboxylic acid ester; and one or more fluorinated solvents to include 1,1,1,2,3,3-hexafluoro-4-(1,1,2,3,3,3-hexafluoropropoxy)-pentane, the one or more fluorinated solvents being over 30% by weight of the electrolyte, excluding any electrolyte salt; wherein the low molecular weight first electrolyte salt at the high salt concentration is soluble in the electrolyte; and wherein the electrolyte is a one-phase solution at a temperature of about −30° C.