| 초록 |
Recent developments in the energy storage devices have led to interest in electrical double layer capacitors (EDLCs). EDLCs show remarkable increase in power density compared with Li-ion batteries, however, their application is limited because of low energy density. Ionic liquids (ILs) have excellent properties as the electrolyte including wide electrochemical and thermal stability and high ionic conductivity. Various ILs, 1-butyl-3-methylimidazolium methanesulfonate ([BMIm]SO3), 1-ethylcyano-3-methylacetatoimidazolium bis(trifluoromethane)sulfonamide ([ECNMEsIm]TF2N), 1,1-bis(cyanomethyl)pyrrolidinium trifluoroborate ([(MCN)2Pyr]BF4), 1,1-bis(cyanomethyl)piperidinium bis(trifluoromethane)sulfonamide ([(MCN)2Pip]TF2N), were synthesized and the electrochemical properites of the binary system consisting each IL and 1-ethyl-3-methylimidazolium trifluoroborate ([EMIm]BF4) using cyclic voltammetry and impedance measurement. |
