FLUORINATED DIETHERS AND THE USE THEREOF IN ELECTROLYTES AND BATTERIES

An electrolyte includes a salt, a first fluorinated diether having a degree of fluorination of 10% to 25%, and a second fluorinated ether having a degree of fluorination of 40% to 100%, wherein the degree of fluorination is determined by dividing a total number of carbon atoms in the first fluorinated diether or the second fluorinated ether, which is substituted with at least one fluoro by a total number of carbon atoms in the corresponding first fluorinated diether or the second fluorinated ether, and wherein the first fluorinated diether and the second fluorinated ether have a volume ratio of 1:4 to 4:1.