Abstract
Highly dispersed polypyrrole particles were decorated on reduced graphene oxide sheets using a facile in situ synthesis route. The prepared composite, which obtained a folded surface, shows remarkable performance as the electrode material of supercapacitors. The specific capacitance reaches 564.1 F g−1 at a current density of 1 A g−1 and maintains 86.4 % after 1000 charging–discharging cycles at a current density of 20 A g−1, which indicates a good cycling stability. Furthermore, the prepared supercapacitor demonstrates an ultrahigh energy density of 50.13 Wh kg−1 at power density of 0.40 kW kg−1, and remains of 45.33 Wh kg−1 even at high power density of 8.00 kW kg−1, which demonstrate that the hybrid supercapacitor can be a promising energy storage system for fast and efficient energy storage in the future.
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This work was supported by the National Natural Science Foundation of China (Nos. 51272100 and 51273073) and the Foundation of Jiangsu Collaborative Innovation Center of Biomedical Functional Materials.
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Wang, A., Zhou, X., Qian, T. et al. Supercapacitors based on highly dispersed polypyrrole-reduced graphene oxide composite with a folded surface. Appl. Phys. A 120, 693–698 (2015). https://doi.org/10.1007/s00339-015-9241-x
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DOI: https://doi.org/10.1007/s00339-015-9241-x