正极材料碳修饰锰酸锂的研究进展  

Research progress in carbon modified lithium manganate as cathode material

作　　者：何佳怡 庄树新 王志恒 HE Jia-yi;ZHUANG Shu-xin;WANG Zhi-heng(Key Laboratory of Functional Materials and Applications of Fujian Province,School of Materials Science and Engineering,Xiamen University of Technology,Xiamen,Fujian 361024,China)

机构地区：[1]厦门理工学院材料科学与工程学院,福建省功能材料及应用重点实验室,福建厦门361024

出　　处：《电池》2022年第5期588-591,共4页Battery Bimonthly

基　　金：福建省科技厅引导性重点项目(2021H0028);福建省功能材料及应用重点实验室开放课题(fma2020010)。

摘　　要：尖晶石锰酸锂(LiMn_(2)O_(4))的表面碳修饰不但可抑制锰溶解,还能提高电子电导率,从而提高倍率性能、延长循环寿命。针对碳修饰的LiMn_(2)O_(4)(LiMn_(2)O_(4)/C)作为锂离子电池正极材料的研究进行综述,分析无定形碳、碳纳米管(CNT)和石墨烯等碳修饰对LiMn_(2)O_(4)电化学性能的影响;讨论碳修饰方式的缺陷;指出解决现存问题的方向。Carbon modification on the surface of spinel lithium manganate(LiMn_(2)O_(4))could not only inhibit the dissolution of manganese,but also improve the electronic conductivity,so as to improve the rate capability and prolong the cycle life.The study on carbon-modified LiMn_(2)O_(4)(LiMn_(2)O_(4)/C)as cathode materials for Li-ion battery was reviewed.The effects of carbon modification such as amorphous carbon,carbon nanotubes(CNT)and graphene on the electrochemical performance of LiMn_(2)O_(4) were analyzed,the defects of carbon modification methods were discussed,as well as the direction to solve the existing problems were proposed.

关 键 词：锂离子电池 正极材料 锰酸锂(LiMn_(2)O_(4)) 碳修饰 LiMn_(2)O_(4)/C复合材料 

分 类 号：TM912.9[电气工程—电力电子与电力传动]