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Sakura-based activated carbon preparation and its performance in supercapacitor applications

机译：基于Sakura的活性炭制剂及其在超级电容器应用中的性能

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摘要

3D porous carbonaceous materials were prepared by combining pre-carbonization and KOH activation with sakura petals as raw materials. The prepared porous sakura carbon (SAC-4) exhibits a high specific surface area, a suitable pore size distribution, a low proportion of oxygen-rich groups and N functional groups, and a partially graphitized phase, which are very beneficial for the electrochemical performance of the material as a supercapacitor electrode. In the activation step, when the mass ratio of KOH to sakura carbon (SC) is 4, a supercapacitor is prepared. A maximal specific capacitance of 265.8 F g(-1) is obtained when the current density is 0.2 A g(-1). When the current density is 1 A g(-1), after 2000 cycles in succession, the capacitance retention rate is excellent and the cycling stability can reach as high as 90.2%. The obtained results indicate that porous carbon prepared with sakura blossom as the raw material is an effective and environmentally friendly electrode material for energy storage.
机译：通过将撒克拉花瓣作为原料结合碳化和KOH活化来制备3D多孔碳质材料。制备的多孔樱草碳（SAC-4）具有高比表面积，合适的孔径分布，富含富氧基团和N官能团的低比例，以及部分石墨化的相位，对电化学性能非常有益材料作为超级电容器电极。在活化步骤中，当KOH的质量比为4时，制备超级电容器。当电流密度为0.2Ag（-1）时，获得最大特定电容为265.8fg（-1）。当电流密度为1Ag（-1）时，连续2000次循环后，电容保持率优异，循环稳定性可高达90.2％。所得结果表明，随着原材料的用樱花开花制备的多孔碳是用于储能的有效和环保的电极材料。

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  • 来源
    《RSC Advances》 |2019年第5期|共10页
  • 作者

    Ma Fei; Ding Shaolan; Ren Huijun; Liu Yanhua;

  • 作者单位

    Shaanxi Univ Sci &

    Technol Coll Bioresources Chem &

    Mat Engn Xian 710021 Shaanxi Peoples R China;

    Shaanxi Univ Sci &

    Technol Coll Bioresources Chem &

    Mat Engn Xian 710021 Shaanxi Peoples R China;

    Shaanxi Univ Sci &

    Technol Sch Arts &

    Sci Xian 710021 Shaanxi Peoples R China;

    Shaanxi Univ Sci &

    Technol Coll Bioresources Chem &

    Mat Engn Xian 710021 Shaanxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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