Pian Zhang, Yun-hao Wu, Hao-ran Sun, Jia-qi Zhao, Zhi-ming Cheng, and Xiao-hong Kang, MnO2/carbon nanocomposite based on silkworm excrement for high-performance supercapacitors, Int. J. Miner. Metall. Mater. https://doi.org/10.1007/s12613-021-2272-8
Cite this article as:
Pian Zhang, Yun-hao Wu, Hao-ran Sun, Jia-qi Zhao, Zhi-ming Cheng, and Xiao-hong Kang, MnO2/carbon nanocomposite based on silkworm excrement for high-performance supercapacitors, Int. J. Miner. Metall. Mater. https://doi.org/10.1007/s12613-021-2272-8
Research Article

MnO2/carbon nanocomposite based on silkworm excrement for high-performance supercapacitors

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  • Received: 20 October 2020Revised: 26 February 2021Accepted: 26 February 2021Available online: 27 February 2021
  • MnO2/biomass carbon nanocomposite was synthesized by a facile hydrothermal reaction. Silkworm excrement acted as a carbon precursor, which was activated by ZnCl2 and FeCl3 combining chemical agents under Ar atmosphere. The thin and flower-like MnO2 nanowires were in situ anchored on the surface of biomass carbon, in which biomass carbon not only offered the high conductivity and good structural stability but also relieved the large volume expansion during the charge/discharge process. The obtained MnO2/biomass carbon nanocomposite electrode exhibited a high specific capacitance (238 F g-1 at 0.5 A g-1) and a superior cycling stability with only 7% degradation after 2000 cycles. The good electrochemical performance is accredited to the high specific surface area, multi-level hierarchical structure, and good conductivity. This study proposes a promising method to make use of biological waste and broadens MnO2 based electrode materials application for next-generation energy storage and conversion devices.
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