富锂锰基材料的电压衰减与改性策略

摘要富锂锰基正极材料xLi₂MnO₃·（1-x） LiMO₂凭借高比容量和低成本的优势，被认为是未来最有潜力的锂离子电池正极材料。然而富锂锰基材料难以解决的电压衰减问题，缩短了富锂锰基材料的循环寿命，限制了富锂锰基材料的产业化进程。围绕富锂锰基材料的电压衰减问题进行阐述，总结了电压衰减对晶体结构的影响，介绍了影响富锂锰基材料电压衰减的因素，并给出了缓解富锂锰基材料电压衰减的改性策略，展望了富锂锰基正极材料的应用和发展方向。

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	刘彦辰
	陈雅芬
	王静
	武俊伟
	贺艳兵

关键词：富锂锰基材料；正极；电压衰减；正极改性

Abstract： Lithium rich manganese-based cathode material (LMR) xLi₂MnO₃·(1-x)LiMO₂ is considered to be the most promising cathode material for lithium-ion batteries in the future due to its high specific capacity and low cost. However, LMR cathodes faced with severe voltage fade problems which shortening the cycle life of LMR cathodes and limiting the industrialization process of LMR cathodes. The paper expounded the voltage fade of LMR cathodes, summarized the influence of voltage attenuation on crystal structure, introduced the factors affecting the voltage decay of LMR cathodes, gave the solution to alleviate the voltage decay of LMR materials, and outlooked the application and developing direction of LMR cathodes.

Keywords： lithium-rich manganese-based material； cathode materials； voltage decay； cathodes modification

Received 2019-09-01;

Fund:深圳市基础研究项目（JCYJ20170413102735544）。

Corresponding Authors: 武俊伟,E-mail:junwei.wu@hit.edu.cn。 Email: junwei.wu@hit.edu.cn

About author: 刘彦辰(1993-),女,博士研究生,现从事富锂锰基材料方面的研究。

引用本文:

刘彦辰, 陈雅芬, 王静, 武俊伟, 贺艳兵.富锂锰基材料的电压衰减与改性策略[J]. 化学工业与工程, 2020,37(1): 34-44

Liu Yanchen, Chen Yafen, Wang Jing, Wu Junwei, He Yanbing.Voltage Decay of Lithium-Rich Manganese-Based Materials and its Modification Strategy[J]. Chemcial Industry and Engineering, 2020,37(1): 34-44

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