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首页> 外文期刊>RSC Advances >Preparation of novel morning glory structure gamma-MnO2/carbon nanofiber composite materials with the electrospinning method and their high electrochemical performance
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Preparation of novel morning glory structure gamma-MnO2/carbon nanofiber composite materials with the electrospinning method and their high electrochemical performance

机译：用静电纺丝法制备新的早晨胶合结构γ-mnO2 /碳纳米河复合材料及其高电化学性能

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摘要

A novel gamma-MnO2/carbon nanofiber composite electrode material with a morning glory structure was prepared for the first time by electrospinning a mixture solution of Mn(CH3COO)(2)salt and polyacrylonitrile and subsequently treating it with NH(3)atmosphere. The resultant materials were applied in supercapacitors, exhibiting a high voltage of 2 V and high energy density of 15.7 W h kg(-1)at the current density of 0.5 A g(-1)in 1 M Na(2)SO(4)solution. In this study, precisely controlling the concentration and time of the reaction resulted in the novel morning glory structure. And the morning glory structure at the surface of the carbon nanofibers increased the specific surface area and shortened the diffusion path for charge transport, increasing the Na+/H(+)ion intercalation capacity, accounting for the high voltage and energy density of the present supercapacitors. These results demonstrated that this new-type of carbon nanofiber with morning glory structure electrode material is potentially superior in obtaining a high voltage for electrode materials and supercapacitors. We hope that these novel materials can expand to different applications in the energy or catalytic field.
机译：通过静电纺丝Mn（CH 3 COO）（2）盐和聚丙烯腈的混合物溶液，首次制备具有晨氧气结构的新型γ-mnO2 /碳纳米纤维复合电极材料，然后用NH（3）气氛处理它。将所得材料施用于超级电容器，在1M Na（2）中的电流密度为0.5Ag（-1）的电流密度，表现出2V的高电压和15.7WH kg（-1）的高电压。（2） ）解决方案。在本研究中，精确地控制反应的浓度和时间导致了新颖的辉煌结构。并且碳纳米纤维表面的早晨辉煌结构增加了比表面积并缩短了电荷传输的扩散路径，增加了Na + / H（+）离子插入能力，占本超级电容器的高电压和能量密度。这些结果表明，与牵牛花结构的电极材料这种新型碳纳米纤维的是在获得用于电极材料和超级电容器的高电压潜在优越。我们希望这些新材料可以扩展到能源或催化领域的不同应用。

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  • 来源
    《RSC Advances》 |2020年第60期|共8页
  • 作者

    Lan Ziwei; Luo Lulin; Ye Jiaye; Luo Qingyue; Zhao Lei;

  • 作者单位

    Lingnan Normal Univ Dept Phys Sci &

    Technol Zhanjiang 524048 Peoples R China;

    Lingnan Normal Univ Dept Phys Sci &

    Technol Zhanjiang 524048 Peoples R China;

    Lingnan Normal Univ Dept Phys Sci &

    Technol Zhanjiang 524048 Peoples R China;

    Lingnan Normal Univ Dept Phys Sci &

    Technol Zhanjiang 524048 Peoples R China;

    Lingnan Normal Univ Dept Phys Sci &

    Technol Zhanjiang 524048 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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