杂质元素对磷酸铁锂材料及电芯影响的研究进展

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摘要磷酸铁锂正极材料以热稳定性优异、循环寿命好、电化学稳定、环境友好等优点成为动力电池领域最理想的正极材料之一。磷酸铁锂材料进行工业化应用，需要通过放大实验，一般来说，引入不具有活性的杂质元素不仅会导致材料的比容量、能量密度的下降，当杂质中含金属类型磁性杂质时，会对电池的寿命及安全性有严重损害。主要从元素体相掺杂、溶解性杂质、以及磁性杂质的生成及对磷酸铁锂材料及电芯性能影响与相关机理进行介绍。

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	刘兴亮

关键词 ：磷酸铁锂, 掺杂, 磁性杂质, 电化学

Abstract：LiFePO4 has become the most ideal cathode material in the field of power battery due to its excellent thermal stability, good cycle life, electrochemical stability, and environmental friendly characters. However, the industrial application of a material requires amplification experiment, which could easily introduce non-active impurity elements into the material, In that case not only the specific capacity and energy density of the material would decrease, but also the battery cycle life and safety would be damaged. This article mainly describes the generation and the influence mechanism of phase doped impurity particles, dissolved impurity phase and generated magnetic impurities towards the material and cell’s performance.

Key words： lithium iron phosphate doping magnetic impurity electrochemistry

收稿日期: 2020-08-18 出版日期: 2021-08-17

通讯作者: 刘兴亮 E-mail: liuxingliang@gotion.com.cn

引用本文:

刘兴亮. 杂质元素对磷酸铁锂材料及电芯影响的研究进展[J]. , 2021, 28(4): 0-0.

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http://edit.chinamet.cn/Jweb_jsgncl/CN/ 或 http://edit.chinamet.cn/Jweb_jsgncl/CN/Y2021/V28/I4/0

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