DOUBLE-CENTER QUATERNARY AMMONIUM SALT ION LIQUID, PREPARATION METHOD THEREFOR AND USE THEREOF

摘要

A double-center quaternary ammonium salt ion liquid having the structural formula (I), wherein n = 2, 3 or 6, Y - is BF 4 - , PF 6 - , (FSO 2 ) 2 N - , (CF 3 SO 2 ) 2 N - or CF 3 SO 3 - . Also provided is a method for preparing a double-center quaternary ammonium salt ion liquid. The double-center quaternary ammonium salt ion liquid has high stability, and thus an electrolyte containing the double center quaternary ammonium salt ion liquid has a high decomposition voltage.