化工进展 ›› 2015, Vol. 34 ›› Issue (1): 166-172.DOI: 10.16085/j.issn.1000-6613.2015.01.029

• 材料科学与技术 • 上一篇    下一篇

锂离子电池磷酸铁锂正极材料的研究进展

张克宇, 姚耀春   

  1. 昆明理工大学真空冶金国家工程实验室, 云南省有色金属真空冶金重点实验室, 省部共建有色金属资源清洁利用国家重点实验室, 云南 昆明 650093
  • 收稿日期:2014-06-27 修回日期:2014-08-05 出版日期:2015-01-05 发布日期:2015-01-05
  • 通讯作者: 姚耀春,教授,博士生导师。E-mail yaochunyao@gmail.com。
  • 作者简介:张克宇(1989-),男,硕士研究生。E-mail lkdzky@163.com。
  • 基金资助:

    国家自然科学基金(51364021)、云南省自然科学基金(2014FA025)及教育部"创新团队发展计划"(IRT1250)项目。

Research progress in LiFePO4 cathode material for lithium-ion batteries

ZHANG Keyu, YAO Yaochun   

  1. The National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, State Key Laboratory of Complex Nonferrous Metal Resources Clear Utilization, Kunming 650093, Yunnan, China
  • Received:2014-06-27 Revised:2014-08-05 Online:2015-01-05 Published:2015-01-05

摘要: 磷酸铁锂正极材料因其优良的电化学性能,被认为是最具应用前景的锂离子电池正极材料之一。但由于其导电率低和锂离子扩散速率慢等问题,一直制约其发展。本文阐述了磷酸铁锂的晶体结构、充放电原理以及电化学反应模型,回顾了近年来国内外对于改善磷酸铁锂的电化学性能所进行的研究,重点介绍了离子掺杂、碳包覆以及材料纳米化等改性方法对锂离子电池磷酸铁锂正极材料的影响以及目前仍然存在的问题,最后展望了该领域的发展趋势,指出继续进行深入的理论研究和进行工艺改进将是今后重点的研究方向。

关键词: 锂离子电池, 正极材料, 磷酸铁锂, 复合材料, 锂离子电池, 正极材料, 磷酸铁锂, 复合材料

Abstract: Due to its excellent electrochemical performance, Lithium iron phosphate (LiFePO4) is universally recognized as one of the most promising lithium ion battery cathode materials. But the development of this cathode material is controlled by its low electric conductivity and slow diffusion rate of lithium ion. The crystal structure, principle of charging and discharging and electrochemical reaction model are described in this paper. Latest progresses in modified research of electrochemical properties of LiFePO4 are reviewed. Especially, the effects of ion-doping, carbon coating and synthesizing nano-structure on the LiFePO4 and the existing problems are introduced. The research trends of this field are brought forward and the future study should be focused on further theoretical study and process improvement.

Key words: lithium-ion battery, cathode material, lithium iron phosphate, composites, lithium-ion battery, cathode material, lithium iron phosphate, composites

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