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Conducting and interface characterization of carbonate-type organic electrolytes containing EMImBF4 as an additive against activated carbon electrode
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  • Journal title : Carbon letters
  • Volume 16, Issue 1,  2015, pp.51-56
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2015.16.1.051
 Title & Authors
Conducting and interface characterization of carbonate-type organic electrolytes containing EMImBF4 as an additive against activated carbon electrode
Kim, Mingyeong; Kim, Kyungmin; Kim, Seok;
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Carbonate-type organic electrolytes were prepared using propylene carbonate (PC) and dimethyl carbonate (DMC) as a solvent, quaternary ammonium salts, and by adding different contents of 1-ethyl-3-methyl imidazolium tetrafluoroborate (). Cyclic voltammetry and linear sweep voltammetry were performed to analyze conducting behaviors. The surface characterizations were analyzed by scanning electron microscopy method and X-ray photoelectron spectroscopy. From the experimental results, increasing the content increased the ionic conductivity and reduced bulk resistance and interfacial resistance. In particular, after adding 15 vol% in 0.2 M PC/DMC electrolyte, the organic electrolyte showed superior capacitance and interfacial resistance. However, when content exceeded 15 vol%, the capacitance was saturated and the voltage range decreased.
Conducting;Interface;Electrolytes;Additive;Activated Carbon;
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