基于石墨烯改性锂二次电池正极材料研究进展

Research progress of anode material based on graphene modification for lithium rechargeable battery

石墨烯由于其具有导电性好、比表面积高、稳定性好等优异的物理化学性质,在锂二次电池方面的应用研究受到广泛关注。石墨烯与正极材料的复合,能有效改善锂二次电池正极材料的电化学性能,促进锂二次电池的快速发展。简要介绍了石墨烯复合正极材料的特点,重点阐述了近年来国内外有关石墨烯分别与磷酸锰锂或磷酸铁锂(LiMPO_4,M=Fe、Mn)、三元材料、硫等3种物质进行复合改性研究的最新进展,最后对其在锂二次电池方面的未来趋势进行了展望。

Graphene has attracted extensive attention in the application of lithium rechargeable batteries,because of its outstanding physical and chemical properties,such as excellent electronic conductivity,large surface area and high stability etc.The composite of graphene and anode materials can improve electrochemical performance of lithium rechargeable battery anode materials and promote the rapid development of lithium-ion batteries.The characteristics of graphene composite anode materials were briefly introduced,including some latest studies on graphene-LiMPO_4（M=Fe,Mn）,ternary material,or sulfur.Finally,the future development trends of this material was also proposed.