Enhanced performance of a flexible supercapacitor due to a combination of the pseudocapacitances of both a PANI/MWCNT composite electrode and a gel polymer redox electrolyteстатья

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Дата последнего поиска статьи во внешних источниках: 8 августа 2017 г.

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[1] Enhanced performance of a flexible supercapacitor due to a combination of the pseudocapacitances of both a pani/mwcnt composite electrode and a gel polymer redox electrolyte / G. P. Shumakovich, O. V. Morozova, M. E. Khlupova et al. // RSC advances. — 2017. — Vol. 7. — P. 34192–34196. In this paper, a combination of the pseudocapacitances of both an enzymatically synthesized polyaniline/multi-walled carbon nanotube (PANI/MWCNT) composite with a core shell structure and a gel polymer redox electrolyte was used to improve the specific characteristics of a supercapacitor (SC). The gel of polyvinyl alcohol in sulfuric acid containing sodium 1,2-naphthoquinone-4-sulfonate (PVA/H2SO4/NQS) was used as a gel polymer redox electrolyte. Electrochemical studies have shown that the redox behavior of NQS is a diffusion-controlled and quasi-reversible process. The PANI/MWCNT composite in 13 mM NQS solution had a high specific capacitance of ca. 1100 F g1 at a scan rate of 5 mV s1 (three electrode cell configuration). The symmetrical flexible SC device based on the PANI/MWCNT composite and the PVA/NQS gel redox electrolyte had a power density of 1.8 kW kg1 and an energy density of 23.3 W h kg1. After 3000 cycles of potential scanning, the specific capacitance of the SC device decreased by less than 7%. [ DOI ]

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