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首页> 外文期刊>Journal of materials science >Preparation and electrochemical properties of coke powder activated carbon based electrode materials
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Preparation and electrochemical properties of coke powder activated carbon based electrode materials

机译：焦粉活性炭基电极材料的制备及电化学性能

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摘要

Coke powder activated carbons (CPACs) were prepared using coke powder as raw materials. The as-prepared CPACs were characterized by energy dispersive spectrometer, scanning electron microscopy, X-ray photo-electron spectroscopy and X-ray diffraction. The BET surface area and porous properties of CPACs were evaluated by nitrogen adsorption at 77 K. The optimal preparation conditions for CPACs were optimized according to the results of a series of electrochemical performance measurements by using the as-prepared CPACs as electrode in 2 mol L~(-1) electrolyte solution of KOH. The CPACs, which were prepared under optimal conditions, exhibit a BET surface area of 285.6 m~2 g~(-1), a pore volume of 0.112 m~3 g~(-1), a statistical average pore diameter of 10 nm, and ratios of the sum of micro and meso pore volume to the total pore volume of about 80.4 %, respectively. The electrochemical measurement results show that the electrode prepared by CPACs under optimal preparation conditions exhibits a specific capacitance of 211 F g~(-1) Moreover, it also exhibits a good electrochemical stability with a specific capacitance reaches up to 156 F g~(-1) over consecutive 1,000 cycle numbers.
机译：以焦粉为原料制备了焦粉活性炭（CPAC）。通过能量色散光谱仪，扫描电子显微镜，X射线光电子能谱和X射线衍射对所制备的CPAC进行表征。通过在77 K下进行氮吸附来评估CPAC的BET表面积和多孔性能。以一系列制备的CPAC为电极，在2 mol L中，根据一系列电化学性能的测量结果，优化了CPAC的最佳制备条件。 〜（-1）KOH的电解质溶液。在最佳条件下制备的CPAC的BET表面积为285.6 m〜2 g〜（-1），孔体积为0.112 m〜3 g〜（-1），统计平均孔径为10 nm ，微孔和中孔体积之和与总孔体积之比分别约为80.4％。电化学测量结果表明，在最佳制备条件下，由CPACs制备的电极具有211 F g〜（-1）的比电容。此外，它具有良好的电化学稳定性，比电容可达156 F g〜（- 1）连续的1,000个循环编号。

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  • 来源
    《Journal of materials science》 |2013年第2期|586-593|共8页
  • 作者

    He-ming Luo; Peng Yang; Feng-bo Zhang;

  • 作者单位

    School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China;

    School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China;

    School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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