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http://dx.doi.org/10.5229/JKES.2011.14.1.038

Study for Addition Effect of Propylene Carbonate to 1-ethyl-3-methylimidazolium in Electric Double Layer Capacitors  

Kim, Hyun-Chul (Department of Industrial Engineering Chemistry, Chungbuk National University)
Yang, Jeong-Jin (Department of Industrial Engineering Chemistry, Chungbuk National University)
Kim, Han-Joo (Department of Industrial Engineering Chemistry, Chungbuk National University)
Sin, Dal-Woo (Korea JCC. Co. LTD.)
Park, Soo-Gil (Department of Industrial Engineering Chemistry, Chungbuk National University)
Publication Information
Journal of the Korean Electrochemical Society / v.14, no.1, 2011 , pp. 38-43 More about this Journal
Abstract
Because the ionic liquid added with Propylene carbonate(PC) at room temperature has lower viscosity than original, we considered electrochemical behavior of it in EDLC. The ionic liquid without PC which does not have ions has no problem in capacity since it has enough ions. The electrolyte resistance was decreased with decreasing viscosity. As a result of identifying high current discharge capacity, we observed that the ionic liquid had capacity of 73.12% at current density of $80\;mA/cm^{-2}$, but it increased to 81.94% at PC content of 40 vol%.
Keywords
Electric Double-Layer Capacitor(EDLC); Room Temperature Ionic Liquids(RTIL); 1-ethyl-3-methylimidazolium tetrafluoroborate(EMI-$BF_4$);
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