ionic liquid | 1-butyl-3-methylimidazole bisulfate is an ionic liquid, which has the advantages of good thermal stability, non-volatilization, high conductivity, wide electrochemical window, etc. It has a good application prospect as an electrolyte in supercapacitors. Imidazole ionic liquids have low viscosity and high conductivity. Since 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4), imidazole ionic liquids developed rapidly. 1-Butyl-3-methylimidazole (BMI ^) ionic liquids have been extensively studied due to their low viscosity, relatively high conductivity and easy synthesis. B.Andrea et al. used 1-butyl-3-methylimidazolium hexafluorophosphate (BMIPF6) and 1-butyl3-butylimidazolium tetrafluoroborate (BMIBF4) as the electrolyte of activated carbon (AC)/polytrimethylthiophene (pMeT) hybrid capacitors. Compared with organic electrolyte (PC-EtNBF4) capacitors, ionic liquid capacitors have higher specific energy, power density and current efficiency at 60°C. |