磷酸亚铁锂材料的研究与发展

doi:10.3969/j.issn.2095-4239.2013.02.003

储能科学与技术 ›› 2013, Vol. 2 ›› Issue (2): 103-111.doi: 10.3969/j.issn.2095-4239.2013.02.003

磷酸亚铁锂材料的研究与发展

费定国^{1, 2}, 林逸全^{1, 2}

1 "国立中央大学"化学工程与材料工程系,中国台湾中坜 32001;
2 倍特利能源科技股份有限公司,中国台湾中坜 32001

收稿日期:2012-11-24 修回日期:2013-01-24 出版日期:2013-04-19 发布日期:2013-04-19
作者简介:费定国(1940--),男,博士,教授,长期致力于锂电池科技的研发与推广,倍特利能源科技股份有限公司董事长,"国立中央大学"化材讲座教授,E-mail:gfey@cc.ncu.edu.tw.

A review on lithium iron phosphate cathode materials

FEY Tingkuo^{1, 2}, LIN Yiquan^{1, 2}

1 Department of Chemical and Materials Engineering,Central University,Zhongli 32001,Taiwan,China;
2 Bettery Energy Technology,Inc.,Zhongli 32001,Taiwan,China

Received:2012-11-24 Revised:2013-01-24 Online:2013-04-19 Published:2013-04-19

摘要/Abstract

摘要： 目前全球高动力锂离子电池系统的发展主要集中在锂锰电池,锂钴镍锰电池以及锂铁电池,其中磷酸亚铁锂材料具有高电容量,高放电功率,极佳的长循环寿命以及良好的热稳定性与高温性能等优点,已成为动力锂离子电池首选的高安全性正极材料.然而,磷酸亚铁锂材料在工业化量产时,必须解决电池芯加工性差及材料一致性不佳等问题,作者曾结合多项新颖观念与技术于磷酸亚铁锂材料制做过程,在粉体表面涂布碳层,在晶体内部掺杂金属,分别改善材料电导率与锂离子扩散速度以及有效地控制碳含量,粉体比表面积,碳层均匀性,粒径大小与分布,制备出高质量磷酸亚铁锂产品.该文将回顾并探讨上述研发工作的一些重要结果.

关键词: 磷酸亚铁锂, 阴极材料, 锂离子电池

Abstract: Globally, the development of a high-power lithium-ion battery is focused on lithium manganese oxide batteries, lithium cobalt nickel manganese batteries and lithium iron phosphate batteries. Lithium iron phosphate is regarded as a practical and popular cathode material for high power lithium-ion batteries due to its high capacity, high rate capability, long cycle life, superior thermal stability and good high-temperature performance. However, the problems associated with commercial production of lithium iron phosphate material are its difficult manufacturing processes and poor material reproducibility. We combined a number of innovative concepts and techniques in the fabrication processes for high quality lithium iron phosphate. Two methods: carbon coating on the surface of the powders and metal cations doping into the crystal lattice have been used to enhance the electronic conductivity and lithium-ion diffusion of LiFePO₄ material, respectively. Moreover, effective control of carbon content, surface area, uniformity of carbon layers, and particle-size distribution of powder materials were also used for the production of LiFePO₄ with good reproducibility. In this paper, some pertinent results from the above work will be reviewed and discussed.

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

中图分类号:

TM911

费定国, 林逸全. 磷酸亚铁锂材料的研究与发展[J]. 储能科学与技术, 2013, 2(2): 103-111.

FEY Tingkuo, LIN Yiquan. A review on lithium iron phosphate cathode materials[J]. Energy Storage Science and Technology, 2013, 2(2): 103-111.

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磷酸亚铁锂材料的研究与发展

A review on lithium iron phosphate cathode materials

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