锂离子电池正极材料磷酸铁锂的研究进展

doi:10.11962/1006-4990.2019-0240

摘要/Abstract

摘要：

磷酸铁锂（LiFePO₄）具有高温稳定性较好、循环性能良好、环保等特点,已成为锂离子动力电池正极材料之一。但由于磷酸铁锂电导率低及锂离子扩散速率慢等缺点,制约其在动力电池行业的发展。因此主要从包覆碳材料对磷酸铁锂进行表面改性、对磷酸铁锂进行掺杂、制备亚微米或纳米级的磷酸铁锂或制备特殊形貌的磷酸铁锂3方面进行综述,分析改善磷酸铁锂性能最优的方法,对其未来的发展趋势进行了预测。

关键词: 锂离子电池, LiFePO₄, 正极材料

Abstract:

LiFePO₄ has the characteristics of high temperature stability,good cycle performance and environmental protection etc..It has become one of the cathode materials for lithium ion power batteries.However,due to the low electronic conductivity of LiFePO₄ and the slow diffusion rate of lithium ions,the application of LiFePO₄ in power battery industry is restricted. Therefore,it was summarized the improvement of LiFePO₄ from three aspects：surface modification of LiFePO₄ with carbon coated materials,doping LiFePO₄,preparing submicron or nanometer LiFePO₄ or the LiFePO₄ with special morphology.The optimum method of improving LiFePO₄ was analyzed and its development trend in the future was predicted.

Key words: Lithium ion battery, lithium iron phosphate, cathode material

中图分类号:

TQ131.11

王甲泰,赵段,马莲花,张彩虹. 锂离子电池正极材料磷酸铁锂的研究进展[J]. 无机盐工业, 2020, 52(4): 18-22.

Wang Jiatai,Zhao Duan,Ma Lianhua,Zhang Caihong. Research progress of LiFePO₄ cathode materials for Li-ion battery[J]. Inorganic Chemicals Industry, 2020, 52(4): 18-22.

图/表 1

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