Activated carbon prepared from polyaniline base by K2CO3 activation for application in supercapacitor electrodes

  • Xiang X
  • Liu E
  • Li L
 et al. 
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Abstract

An activated carbon was prepared from a polyaniline base using K 2 CO 3 as an activating agent. The morphology, surface chemical composition, and surface area of the as-prepared carbon materials were investigated by scanning electron microscope, X-ray photoelectron spectroscopy, and Brunauer–Emmett–Teller measurement, respectively. Electrochemical properties of the as-prepared sample were studied by cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy measurements in 6 mol L −1 KOH aqueous solution. Compared with the non-activated carbon, activated carbon showed superior capacitive performance. The activation carbon presented a high specific gravimetric capacitance of 210 F g −1 . The good electrochemical performance of the activated carbon was ascribed to well-developed micropores, high surface area, the presence of nitrogen and oxygen functional groups, and larger pore volume.

Author-supplied keywords

  • activated carbon
  • k 2 co 3
  • polyaniline
  • supercapacitor
  • x-ray photoelectron spectroscopy

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Authors

  • Xiaoxia Xiang

  • Enhui Liu

  • Limin Li

  • Yanjing Yang

  • Haijie Shen

  • Zhengzheng Huang

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