Abstract
Supercapacitor is a promising electrochemical energy-storage device, which has the advantage of good cycle stability, short charging time, and high power density, so it has broad application prospects. Electrode as a core component has an important influence on the specific capacitance and performance of the supercapacitor. In this study, a series of reduced graphene oxide/polyaniline/polyvinyl alcohol (RGO/PANI/PVA) nanofibers with different RGO concentrations were synthesized by electrospinning method and then studied as electrode materials for supercapacitors. The experimental result reveals that the PANI/PVA nanofiber shows the pseudocapacitance properties, while the RGO/PANI/PVA nanofibers exhibit the electrochemical properties of the double-layer capacitor. In addition, the RGO/PANI/PVA nanofibers have a uniform diameter distribution of 119.8 nm without beads and droplets sticking when the concentration of RGO is 0.2%. This morphology contributes to a large specific surface area of fibers and provides sufficient channels for the transport of ions. RGO/PANI/PVA nanofibers exhibit better specific capacitance of 174 F/g when compared with the PANI/PVA (105 F/g). The research indicates that RGO/PANI/PVA nanofibers with high specific capacitance can provide a promising application as supercapacitor electrodes.
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Acknowledgements
The authors gratefully acknowledge the financial support by Research Initiation Funds of Shanghai University of Engineering Science (2016-27), Student Research Innovation Training Program-SUES (cs1809004), Young Scholar Training Scheme of Shanghai Universities (ZZGCD16028), 2017 Talents Action Program of Shanghai University of Engineering Science (2017RC432017), and Shanghai Local Capacity-Building Project (No. 19030501200).
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Chen, Z., Jiang, Y., Xin, B. et al. Electrochemical analysis of conducting reduced graphene oxide/polyaniline/polyvinyl alcohol nanofibers as supercapacitor electrodes. J Mater Sci: Mater Electron 31, 5958–5965 (2020). https://doi.org/10.1007/s10854-020-03204-1
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DOI: https://doi.org/10.1007/s10854-020-03204-1