ELECTROLYTE SALT AND ELECTROLYTE FOR ELECTRICITY STORAGE DEVICE, AND ELECTRICITY STORAGE DEVICE

摘要

Provided is an electrolyte salt comprising a quaternary ammonium cation indicated by formula (1) and a trimethylsilyl alkanesulfonate anion indicated by formula (2).
(In the formula, R 1 -R 4 each independently indicate a C1-4 alkyl group or an alkoxyalkyl group indicated by -(CH 2 ) n -OR. Any two among R 1 -R 4 can mutually bond and form a ring together with a nitrogen atom to which same have bonded. The remaining two can mutually bond and form a spiro ring having a nitrogen atom as the spiro atom therefor. R indicates a methyl group or an ethyl group. n indicates 1 or 2 and m indicates 2 or 3.)