A high voltage resistant electrolyte and application thereof in high voltage supercapacitors

The invention discloses a high-voltage resistant electrolyte and application thereof in a high-voltage supercapacitors, and belongs to the technical field of electrochemistry. The electrolyte of the present invention comprises an electrolyte formed by mixing a quaternary ammonium salt or a quaternary phosphate salt with a bis (trifluoromethanesulfonyl) imide salt, organic solvents and high voltageadditives, has wider potential window and better electrochemical stability, and are not easy to decompose at high voltage, and are not easy to destroy electrode materials due to side reactions with functional groups on the electrode materials. The application of the high-voltage-resistant electrolyte in the high-voltage supercapacitor of the invention enables the supercapacitor to work stably fora long time under the voltage of 2.7 to 3.2 V, and the working temperature range is wide. 40 to 70 DEG C, and has that advantage of low viscosity, high conductivity, small internal resistance and thelike. 本发明公开了种耐高电压的电解液及其在高电