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Facile synthesis of structure-controllable, N-doped graphene aerogels and their application in supercapacitors

机译：容易合成结构可控，N掺杂石墨烯Aerogels及其在超级电容器中的应用

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摘要

N-doped graphene aerogels (NGAs) were first synthesized by using graphene oxide (GO) and melamine via a self-assembly process by one-pot hydrothermal method. The morphology and structure of the as-prepared materials were characterized by means of scanning electron microscopy, transmission electron microscopy, X-ray diffraction, XPS spectroscopy and nitrogen adsorption/desorption measurement. The electrochemical performances of NGAs were studied by cyclic voltammetry, galvanostatic charge/discharge and impedance spectroscopy measurements. Importantly, the microstructure, surface area and capacitance of NGAs could be facilely controlled by changing the melamine/GO mass ratio. Compared with the pure graphene aerogel (80 F g(-1) at 0.5 A g(-1)), NGA-3 with the mass ratio of 1/15 displayed enhanced specific capacitance (116 F g(-1)) and retained 94% of its initial capacitance after 1000 cycles. It provided a possible way to obtain graphene based materials with high surface area and capacitance.
机译：首先通过通过单壶水热法通过自组装方法使用石墨烯（GO）和三聚氰胺来合成N掺杂石墨烯气动凝胶（NGA）。通过扫描电子显微镜，透射电子显微镜，X射线衍射，XPS光谱和氮吸附/解吸/解吸测量的形态和结构的表征。通过循环伏安法，电镀电荷/放电和阻抗光谱测量研究了NGA的电化学性能。重要的是，通过改变三聚氰胺/去质量比可以易于控制NGA的微观结构，表面积和电容。与纯石墨烯气凝胶（80V（-1）的纯石墨烯气凝胶（80 f g（-1））相比，具有质量比为1/15的质量比的Nga-3显示增强的特定电容（116f g（-1））并保留1000次循环后其初始电容的94％。它提供了通过高表面积和电容获得基于石墨烯的材料的可能方法。

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  • 来源
    《RSC Advances》 |2015年第94期|共8页
  • 作者

    Shi Xianpan; Zhu Jiayi; Zhang Yong; He Shuaijie; Bi Yutie; Zhang Lin;

  • 作者单位

    Southwest Univ Sci &

    Technol Sch Mat Sci &

    Enginnering Mianyang 621010 Peoples R China;

    CAEP Res Ctr Laser Fus Mianyang 621900 Peoples R China;

    Southwest Univ Sci &

    Technol Joint Lab Extreme Condit Matter Properties Mianyang 621010 Peoples R China;

    Southwest Univ Sci &

    Technol Sch Mat Sci &

    Enginnering Mianyang 621010 Peoples R China;

    Southwest Univ Sci &

    Technol Joint Lab Extreme Condit Matter Properties Mianyang 621010 Peoples R China;

    Southwest Univ Sci &

    Technol Sch Mat Sci &

    Enginnering Mianyang 621010 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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