锂电池基础科学问题（IV）--相图与相变（2）

摘要

Phase transitions during charging/discharging processes are highly relevant to lithium storage mechanism, capacity range, voltage profiles, kinetic properties, volume variation and heat production. This article summarizes briefly research activities on phase transition during lithium extraction/insertion, and introduces calculation and experimental methods for phase diagram of Li-ion batteries.%　　充放电过程中电极材料的相变与材料的储锂机制、储锂容量范围、电压曲线、储锂动力学、材料的体积变化以及吸放热等密切相关。获得材料在充放电过程中的相组成、相结构演化及相图，对于全面理解材料及其充放电行为，开发新的电池材料体系具有十分重要的意义。本文小结了脱嵌锂引起的相变，并介绍了锂电池中相图的计算和实验方法。