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Polyaniline-based carbon nanospheres and redox mediator doped robust gel film leads to high performance foldable solid-state supercapacitor

Abstract

A novel and high-performance foldable solid-state supercapacitor has been developed based on the nitrogen-containing polyaniline-based carbon nanospheres (C-PANI) coated carbon cloth electrodes and the AQSA-Na (anthraquinone-2-sulfonic acid sodium salt) redox mediator doped PVA (polyvinyl alcohol)-H2SO4 robust gel film electrolyte. The foldable solid-state supercapacitor demonstrates outstanding electrochemical performance such as a large specific capacitance of 430 F g-1 at a current density of 0.8 A g-1, a remarkably high energy density of 33.4 Wh kg-1 at a power density of 600 W kg-1 and excellent cycling stability with 90% specific capacitance retention after 1000 cycles. Simultaneously, the high flexibility of the as-fabricated solid-state supercapacitor enabled it to work under both normal and folding conditions, and the device could be folded/unfolded repeatedly up to 500 times with only a small capacitance loss of 9%. These results indicate that the as-fabricated solid-state supercapacitor is suitable for highly fold-tolerant high-energy-density energy storage devices applications. More importantly, owing to the solid-state and integrated configuration, several supercapacitors can be conveniently interconnected together in series or parallel to improve the output potential or current.

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Publication details

The article was received on 03 May 2017, accepted on 10 Jul 2017 and first published on 11 Jul 2017


Article type: Paper
DOI: 10.1039/C7NJ01478C
Citation: New J. Chem., 2017, Accepted Manuscript
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    Polyaniline-based carbon nanospheres and redox mediator doped robust gel film leads to high performance foldable solid-state supercapacitor

    E. Feng, H. Peng, Z. Zhang, J. Li and Z. Lei, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01478C

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