Electrochemical supercapacitor properties of polyaniline thin films in organic salt added electrolytes |
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Authors: | Yongcheol Jo Won‐Je Cho A I Inamdar Byung Chul Kim Jongmin Kim Hyungsang Kim Hyunsik Im Kook‐Hyun Yu Dae‐Young Kim |
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Affiliation: | 1. Division of Physics and Semiconductor Science, Dongguk University, Seoul, Korea;2. Department of Chemistry, Dongguk University, Seoul, Korea;3. Department of Biological and Environmental Science, Dongguk University, Seoul, Korea |
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Abstract: | We demonstrate optimized supercapacitive characteristics of electrodeposited polyaniline by adding organic salt into electrolyte. The optimum amount of the organic salt is found to be 2 wt % which provides better ionic conductivity of the electrolyte, leading to the improved specific capacitance of 259 Fg?1. This capacitance remains at up to 208 Fg?1 (80% capacity retention) after 1000 charge–discharge cycles. The optimized organic salt added electrolyte causes better rate performance and higher cyclability. Significantly reduced electrochemical charge transfer resistance at the electrode/electrolyte interface results in the increased ionic conductivity, which can be useful in electrochemically preferred power devices for better applicability. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40306. |
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Keywords: | conducting polymers ionic liquids electrochemistry |
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