| 磷酸铁锂正极材料的缺陷机理与改性技术路径 |
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| 引用本文： | 朱豪飞,王建业,陈柏旭,杨倩鹏,武恒.磷酸铁锂正极材料的缺陷机理与改性技术路径[J].化学通报,2023,86(5):535-542. |
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| 作者姓名： | 朱豪飞 王建业 陈柏旭 杨倩鹏 武恒 |
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| 作者单位： | 国家电投集团青海光伏产业创新中心有限公司,国家电投集团青海光伏产业创新中心有限公司,华北电力大学动力与机械工程学院,国家电投集团青海光伏产业创新中心有限公司,西北工业大学材料学院 |
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| 基金项目： | 国家重点研发计划项目(2021YFB2400100,2021YFB2400105)和广东省科技计划项目(2019B090905007)资助 |
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| 摘 要： | 磷酸铁锂(LiFePO4,简称LFP)因其良好的安全性、稳定的充放电平台和原料来源广泛等优点，成为当前应用最广泛的正极材料之一。然而，LFP倍率性能较差，且在低温环境下容量大幅衰减，限制了其在动力电池和特殊环境下的应用。本文从多角度分析了LFP存在缺陷的机理，并总结了几种主要的改性技术路径及作用原理。最后，对LFP未来的发展方向提出了相应的展望。
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| 关 键 词： | 锂离子电池 磷酸铁锂 缺陷机理 改性策略 |
| 收稿时间： | 2022/9/28 0:00:00 |
| 修稿时间： | 2022/10/17 0:00:00 |
Defect mechanism and modification technology path of lithium iron phosphate cathode materials |
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| Zhu Haofei,Wang Jianye,Chen Boxu,Yang Qianpeng and Wu Heng.Defect mechanism and modification technology path of lithium iron phosphate cathode materials[J].Chemistry,2023,86(5):535-542. |
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| Authors: | Zhu Haofei Wang Jianye Chen Boxu Yang Qianpeng and Wu Heng |
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| Abstract: | Lithium iron phosphate (LiFePO4, LFP for short) is considered to be one of the most promising cathode candidates due to the advantages of good safety, stable charging and discharging platform, and wide source of raw materials. However, LFP has poor rate performance, and its capacity is greatly attenuated in low- temperature environment, which limits its application in power batteries and special environments. In this paper, the mechanism of defects in LFP are analyzed from multiple perspectives, and several main modification technology paths and modification principles are summarized. Finally, this paper puts forward corresponding prospects for the future development direction of LFP. |
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| Keywords: | lithium-ion batteries lithium iron phosphate mechanism of defect modification strategy |
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