石墨烯基三维导电网络结构储能电极材料的研究进展

3D graphene-based electrode materials for advanced electrochemical energy storage

设计和构筑有效的三维导电网络结构对于优化储能电极材料的性能具有重要意义.石墨烯独特二维结构所具有的超高电荷传导、极大的表面负载空间和可形成三维孔(层)隙骨架结构等特性为制备多样化的复合电极材料提供了基础.本文介绍了近年来基于石墨烯的三维网络结构复合电极材料的构筑及其在电化学储能(如锂离子电池、锂硫电池)应用中的研究进展,结合本实验室的研究工作,着重介绍了石墨烯基复合电极材料结构设计的科学原理,讨论了几种石墨烯复合结构,并对未来石墨烯复合结构体系的构筑及其应用作了展望.

Designing specific structured electrode materials is essential for efficient electrochemical energy storage.Graphene owns unique 2D structure and possesses excellent electrical conductivity,ultrahigh specific surface areas,as well as colloidal self-assembling behavior,which make it an ideal candidate for constructing hybrid electrode materials with remarkably enhanced electrochemical performances.This article reviews the recent research progress made on various 3D graphene-based electrode materials and their applications in electrochemical energy storage such as Li-ion and Li-S batteries.Based on the recent works made by our group,we highlight the principles of designing graphene-based materials,and discuss various advanced structures of graphene-based electrodes.Furthermore,future research directions for the development of novel and more efficient graphene-based electrode materials are proposed.