Polysulphides reversible faradaic reactions in supercapacitor application |
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| Affiliation: | 1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, People’s Republic of China;2. Faculty of Chemistry, Northeast Normal University, Changchun 130024, People’s Republic of China;1. Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, South Korea;2. Department of Chemical & Biomolecular Engineering, Department of Bio & Brain Engineering, Department of Biological Sciences, BioProcess Engineering Research Center, Center for Systems & Synthetic Biotechnology, Institute for the BioCentury, and Bioinformatics Research Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, South Korea;1. School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Henan Xinxiang, 453007, PR China;2. Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environment Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, School of Environment, Henan Normal University, Henan Xinxiang, Henan Province, 453007, PR China |
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| Abstract: | The electrochemical performance of polysulphide compounds as an electrolyte in supercapacitor was studied. Numerous reversible faradaic reactions during which oxidation state of sulphur changes from − 2 to − 0.4 work as an efficient source of faradaic reactions. Polysulphides were synthesized by a simple, inexpensive method. This innovative system offers quite high values of specific capacitance, more than twice as high as electrolyte without polysulphides. In addition, cyclability (5000 cycles) does not influence the capacitance of the electrochemical capacitor when polysulphide compounds are used as the electrolyte. |
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