ZHANG Chuan-xiang, ZHANG Rui, XING Bao-lin, CHENG Guo, Xie Ying-bo, . Effect of pore structure on the electrochemical performance of coal-based activated carbons in non-aqueous electrolyte. New Carbon Mater., 2010, 25(2): 129-133. doi: 10.1016/S1872-5805(09)60020-2
Citation: ZHANG Chuan-xiang, ZHANG Rui, XING Bao-lin, CHENG Guo, Xie Ying-bo, . Effect of pore structure on the electrochemical performance of coal-based activated carbons in non-aqueous electrolyte. New Carbon Mater., 2010, 25(2): 129-133. doi: 10.1016/S1872-5805(09)60020-2

Effect of pore structure on the electrochemical performance of coal-based activated carbons in non-aqueous electrolyte

doi: 10.1016/S1872-5805(09)60020-2
Funds:  National Natural Science Foundation of China (50672025, 50730003).
More Information
  • Author Bio:

    ZHANG Chuan-xiang(1970-), male, Ph.D., Associate professor, engaged in the research of carbon materials for electrochemical double layer capacitors. E-mail: zcx223@hpu.edu.cn

  • Received Date: 2008-08-04
  • Accepted Date: 2010-04-16
  • Rev Recd Date: 2010-03-24
  • Publish Date: 2010-04-10
  • Anthracite was activated by NaOH to prepare high-performance activated carbons as electrodes for electric double-layer capacitors. The porous structure and electrochemical characteristics of the carbons were investigated by nitrogen sorption and electrochemical methods. The effect of pore structure on the electrochemical performance of the carbons in a 1mol/L (C2H5)4NBF4/propylene carbonate (PC) electrolyte was investigated. The as-prepared activated carbons exhibit large surface areas (943-2479m2/g) and high-specific capacitances (57-167F/g). The specific capacitance depends not only on the surface area, but also on the pore size distribution (PSD) of the carbon. Pores with a size of 2-3nm are crucial for the ions to penetrate inside them for the (C2H5)4NBF4/PC electrolyte. Specific capacitance is higher and impedance is lower for the sample with a wider PSD due to the fact that electrolyte ions could easily enter the pores.
  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article Views(2571) PDF Downloads(3446) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return