基于转化反应机制的锂离子电池电极材料研究进展

Progress of Electrode Materials Entailing Conversion Reaction for Li-ion Batteries

基于转化反应机制实现储锂功能的电极材料的研究和开发是提高锂离子电池性能,尤其是其可逆循环容量的重要方法,对于锂离子电池未来的发展有着非常重要的意义。本文综述近年来基于转化反应机制实现储锂功能的锂离子电池电极材料的研究进展,介绍了转化反应机制等新概念,重点讨论了基于转化反应机制实现储锂功能的简单过渡金属化合物电极材料的电化学性能、电极界面特性及其电化学性能改进的方法,最后展望了基于转化反应机制实现储锂功能的锂离子电池电极材料的未来发展。

The development of electrode materials entailing conversion reactions were very important methods for improving the performance of Li-ion batteries,especially for improving its reversible capacity upon cycling.In this paper,the progresses of the use of transition metal compounds that react with Li through conversion reactions as both positive and negative electrode materials in Li-ion batteries were reviewed,the mechanisms of the conversion reactions were introduced,and several factors currently handicapping the applicability of electrode materials entailing conversion reactions were also discussed.Emphasis was put on the electrochemical behavior,the properties of electrode/electrolyte interfaces and the methods for improving the performance of these transition metal compounds entailing conversion reactions.At last,the directions of future research of electrode materials through conversion reactions were put forward.