LiFePO4纳米片球/石墨烯复合材料的制备及锂电性能研究  

Preparation and electrochemical performance for Lithium-ion battery of LiFePO4 nanoflake microsphere/graphene nanocomposites

作　　者：刘晗 白增 文晓刚[1] LIU Han;BAI Zeng;WEN Xiao-gang(College of Materials Science and Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学材料科学与工程学院,四川成都610065

出　　处：《化学工程师》2020年第7期6-9,共4页Chemical Engineer

基　　金：四川省科技计划重点研发项目(2018GZ0463);教育部新世纪优秀人才支持计划(NCET-10-0605)。

摘　　要：采用水热法制备出磷酸铁锂纳米片球/石墨烯(LiFePO4/rGO)复合材料,使用XRD和扫描电镜(SEM)对复合材料进行了表征,并测试了其电化学性能。结果表明,LiFePO4/rGO复合材料具有优异的电化学性能,其比容量达到154.4mAh·g-1,在5C倍率下循环50圈容量保持率为94.2%。The LiFePO4 nanoflake-microsphere/rGOnanocomposites were prepared by a simple hydrothermal method.The synthesized materials were characterized by XRD and SEM,and its electrochemical performance as cathode of Lithium ion battery was studied.The LiFePO4/rGOnanocomposites exhibits excellent electrochemical properties,its specific capacity can reach to 154.4mAh·g-1,and after 50 cyclesat 5C,the capacity retention rate is 94.2%.

关 键 词：LIFEPO4 石墨烯 纳米片球 锂离子电池 

分 类 号：TQ152[化学工程—电化学工业]