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快速充电锂离子电池LiEuTiO4负极材料研究进展
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1.佛山科学技术学院;2.清华大学

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科技部国际合作项目(2019YFE010186);国家自然科学基金 (U1564205);北京市项目(YETP0157);广东省科技厅重点项目(2016GCZX008)


Progress of LiEuTiO4 for Anode Materials in Lithium-ion Batteries with Fast Charging
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1.Foshan University;2.Tsinghua University,Beijing

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    摘要:

    随着电动车产业的快速发展,锂离子电池的安全问题和快速充电问题越来越受到关注。石墨作为商业化已久的锂离电池负极材料,因其析锂平台近乎于零,而存在因负极析锂而短路的巨大安全隐患,因而不适用于快速充电的锂离子电池负极材料。具有层状钙钛矿结构LiEuTiO4,其脱/嵌锂平台约为0.8V,实际比容量高于200 mAh/g,既可以避免析锂的发生, 又不会导致电池能量密度过低,且倍率性能良好,利用该材料有望发展出一种电动车用安全的快速充电动力电池。本工作总结了钛酸铕锂(LiEuTiO4)负极材料的研究现状,包括分子结构、储锂机制、制备方法及亟待解决的问题,指出进一步的研究方向。

    Abstract:

    With the rapid development of electric vehicle industry, the safety and fast charging of lithium ion batteries have attracted more and more attention. Graphite, as commercial anode material for lithium-ion batteries, has a great potential safety hazard of internal short-circuit caused by the lithium plating due to the low intercalationSpotential (~0 V), and is not suitable for fast charging batteries. LiEuTiO4 with a layered perovskite structure has intercalationSpotential of about 0.8 V and actual capacity of over 200 mAh/g, which can avoid the occurrence of lithium plating and will keep high energy density and rate performance, thus hopefully become the ideal anode for safe fast-charging power battery for electric vehicles. In this paper, the current research status of LiEuTiO4 is summarized, including molecular structure, lithium-storage mechanism, preparation method and problems to be solved, etc.

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赵红,王莉,何向明.快速充电锂离子电池LiEuTiO4负极材料研究进展[J].稀有金属材料与工程,2020,49(11):3998~4004.[Zhao Hong, Wang Li, He Xiang-ming. Progress of LiEuTiO4 for Anode Materials in Lithium-ion Batteries with Fast Charging[J]. Rare Metal Materials and Engineering,2020,49(11):3998~4004.]
DOI:10.12442/j. issn.1002-185X.20190959

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  • 收稿日期:2019-11-15
  • 最后修改日期:2019-11-29
  • 录用日期:2019-12-04
  • 在线发布日期: 2020-12-09
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