石墨烯基超级电容器的研究进展

Research progress graphene-based supercapacitor

石墨烯具有独特的二维空间网络结构及优异的导电性能、机械性能及超大的比表面积,是超级电容器中的双层电容器的理想电极材料,但石墨烯存在着容易团聚导致其可利用的活性表面减少及导电率和电容量降低的问题。近几年通过与N、B、P杂原子掺杂、碳纳米管复合及与法拉第赝电容电极材料进行互补性复合等方法对存在的问题进行了研究并取得了较好的效果,对这方面的研究进行了综述并指出了今后的研究及发展方向。

Graphene can be used as the ideal electrode material for supercapacitors in double-layer capacitors because it has unique two-dimensional network structure and excellent electrical properties,mechanical properties and large specific surface area. There was a problem that graphene usually occurring the irreversible agglomeration result in reducing dramatically the available active surface of graphene and decreasing the conductivity and capacitance. In recent years,the problem was studied through graphene doped with the heteroatom of N / B / P and combinied with nanotube as well as formed complmentary composite electrode materials with Faraday Pseudocapacitance,and these solution have good effects. This paper reviews the progresss about the problem and solution. Meanwhile,the further research and the direction was prospected.