锂离子电池LiFePO4正极材料的掺杂改性研究进展  

Recent Advances on Doping Modification of LiFePO4 Cathode Materials for Lithium-ion Batteries

作　　者：赵群芳 欧阳全胜 蒋光辉 张淑琼 王嫦 胡敏艺 ZHAO Qun-fang;OUYANG Kingsam;JIANG Guang-liui;ZHANG Shu-qiong;WANG Chang;HU Min-yi(Guizhou light Industry Technical College,Guiyang 550025,China;Graphene Materials Engineering Research Center of Guizhou Colleges and Universities,Guiyang 550025,China;Provincial Collaborative Innovation Center of Used Power Batteries Recycling,Guiyang 550025,China)

机构地区：[1]贵州轻工职业技术学院,贵州贵阳550025 [2]贵州省普通高等学校石墨烯材料工程研究中心,贵州贵阳550025 [3]废旧动力电池梯次利用及资源化省级协同创新中心,贵州贵阳550025

出　　处：《湖南有色金属》2019年第5期40-43,共4页Hunan Nonferrous Metals

基　　金：贵州轻工职业技术学院基金资助项目(18QY004)

摘　　要：锂离子电池因其长的循环寿命和高能量密度被广泛地研究,橄榄石LiFePO4被认为是最具前景的正极材料之一。但较低的本征电导率和锂离子扩散系数限制其广泛应用,各种各样的方法用来改善其性能,离子掺杂被认为是最有效的方法。文章总结了近年来在Li-位、Fe-位、O-位和多元掺杂对LiFePO4改性的试验研究和理论计算研究,证明合适的离子掺杂在合适的位置能够有效改善其电化学性能。Lithium-ion batteries have been explored due to the long cycle life and high energy density.The olivine structure of LiFePO4 is considered to be one of the most promising cathode materials for lithium-ion batteries.But the low Intrinsic conductivity and lithium-ion diffusion coefficient limit widely applications.A great number of researches have been used to enhance its performance,and ion doping is the most effective method.In this paper,the experimental and theoretical calculations researches of LiFePO4 modification in Li-position,Fe-position,O-position and multi-doping have been summarized in recent years,which proves that suitable ion doping can effectively improve its electrochemical performance at a suitable position.

关 键 词：锂离子电池 LIFEPO4 离子掺杂 理论计算 电化学性能 

分 类 号：TG146.26[一般工业技术—材料科学与工程]