硅酸盐学报

Li2MnO3活化机理及其影响因素的研究进展

单位：1. 清华大学深圳研究生院新材料研究所广东深圳 518055 2. 清华大学材料学院北京 100084 3. 淮安新能源材料技术研究院江苏淮安 223005

关键词：锂离子电池正极材料锰酸锂活化机理

分类号：TK91

出版年,卷(期):页码：2017,45(4):495-503

DOI：10.14062/j.issn.0454-5648.2017.04.06

摘要：

层状结构富锂锰基固溶体以其高电压、大容量、低成本等优点有望成为下一代锂离子动力电池正极材料。但其使用过程中存在电压衰减、容量损失、向尖晶石相转变等问题，与Li2MnO3电化学活化有关，深入了解Li2MnO3电化学活化机制意义重大。本文综述了Li2MnO3的晶体结构以及电化学活化机理的相关研究，分析了测试温度、烧结制度、颗粒粒径、酸处理、离子掺杂等因素对其电化学活化的影响及作用机理，展望了富锂锰基正极材料的未来研究方向与应用前景。

Li–rich Mn–based cathode materials are considered as the most promising candidate for the next–generation lithium ion batteries due to their high capacity, high voltage and low cost. However, their application is still restricted due to the presence of some problems like voltage decay, capacity loss, spinel–like transformation, etc. which are closely related to the activation of Li2MnO3 part. In this review, recent development on the structural information and activation mechanism of Li2MnO3 was summarized. The affecting factors (i.e., temperature, sintering procedure and particle size) and the corresponding mechanism were discussed. In addition, the development and application of Li–rich cathode materials were also prospected.

基金项目：

深圳市基础研究项目(JCYJ20140509172959973)

作者简介：

赵世玺(1966—)，男，博士，副教授

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