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Pyrolytic cyanobacteria derived activated carbon as high performance electrode in symmetric supercapacitor

Author

Listed:
  • Wang, Keliang
  • Cao, Yuhe
  • Wang, Xiaomin
  • Fan, Qihua
  • Gibbons, William
  • Johnson, Tylor
  • Luo, Bing
  • Gu, Zhengrong

Abstract

Cyanobacteria, as a renewable source of carbon, was used to prepare activated carbon electrodes in supercapacitors. The activation includes a pre-carbonization at 400 °C followed by KOH heat treatment at 800 °C, leading to efficient and high degree of graphitization. The activated carbon electrode consisted primarily of carbon and oxygen, and possessed a large specific surface area of 2184 m2 g−1, with pore size centered at 27 nm. In 6 mol L−1 KOH electrolyte, the electrode exhibited superior specific capacitance of 271 F g−1 and 222 F g−1 at a charge/discharge current density of 0.1 A g−1 and 5.0 A g−1, respectively. The results demonstrated that the activated carbon derived from cyanobacteria can serve as promising electrode material for electrical double-layer capacitors.

Suggested Citation

  • Wang, Keliang & Cao, Yuhe & Wang, Xiaomin & Fan, Qihua & Gibbons, William & Johnson, Tylor & Luo, Bing & Gu, Zhengrong, 2016. "Pyrolytic cyanobacteria derived activated carbon as high performance electrode in symmetric supercapacitor," Energy, Elsevier, vol. 94(C), pages 666-671.
    • Handle: RePEc:eee:energy:v:94:y:2016:i:c:p:666-671
    DOI: 10.1016/j.energy.2015.10.047
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    Cited by:

    1. Meng, Qi & Chen, Wenjiao & Wu, Linzhen & Lei, Jiehong & Liu, Xiaonan & Zhu, Wenkun & Duan, Tao, 2019. "A strategy of making waste profitable: Nitrogen doped cigarette butt derived carbon for high performance supercapacitors," Energy, Elsevier, vol. 189(C).

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