| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-flammable nonaqueous electrolyte having excellent ion conductivity and battery characteristics, and not only exhibiting non-flammability as a liquid but also not causing combustion or explosion in the gas phase.SOLUTION: In the non-flammable electrolyte, 10-90 vol.% of fluorine-containing phosphate ester represented by a general formula (1) (in the formula, Rf, Rfand Rfrepresent, respectively, a straight or branch alkyl group of 1-6C or a straight or branch fluorine-containing alkyl group of 1-6C, and at least one of Rf-Rfis a fluorine-containing alkyl group) is made to exist in a solution containing a cyclic carbonate and an electrolyte salt. |
