功能化石墨烯基复合材料电容性能的研究进展

Research Progress on Capacitance Properties of Functionalized Graphene-based Composites

超级电容器已成为最具应用前景的电化学器件之一,可以快速的存储和释放电能。石墨烯凭借其优异的力学、电学、热学等优点成为超级电容器理想的电极材料。然而,由于范德华力的存在,石墨烯电极在制备过程中容易出现聚集和堆叠,进而导致材料的比表面积和电导率大幅度降低,严重影响其电容性能。对石墨烯进行功能化修饰,并且与其他材料复合可有效解决上述问题。本文对氧化石墨烯基、还原氧化石墨烯基和羧基化石墨烯基复合材料的电容性能的研究进展进行了介绍。

Supercapacitor is one of the most promising electrochemical devices that can quickly store and release electrical energy. Graphene has become an ideal electrode material for supercapacitors, due to its excellent mechanical,electrical, thermal and other properties. However, graphene-based electrodes are prone to agglomeration and stacking during the preparation because of the van der Waals forces, resulting in a large decrease in the specific surface area and electrical conductivity of the material, and affecting it’s the capacitance performance seriously. Therefore, many researchers focus on functionalizing graphene and compositing with other electrode materials to solve the above problems. In this paper, the research progress on the capacitive properties of graphene oxide-based, reduced graphene oxide-based and carboxylated graphene-based composites is reviewed.