富锂层状材料的结构及电化学性能概要

Structure and Electrochemical Properties of Li-rich Layered Cathode Materials x Li_2Mn O_3·(1-x)Li MO_2

富锂层状材具有诸多优势,其电势较高,放电比容量高,因此拥有较高放电能量。另外,具有较好的热稳定性,具有良好的应用前景。但是,富锂材料的发展也遇到了一些瓶颈,首次充放电过程中不可逆容量较大,再者在之后的循环过程中,电压衰减严重,结构变化较大。

Li-rich layered cathode materials have many advantages, such as high electric potential, high discharge capacity, and chemical stability. Therefore, the materials have become an electrode material of prospect in application. However, the development of lithium rich materials also encounters some bottlenecks. The irreversible capacity of the first charge and discharge process is pretty large. Moreover, during the subsequent cycle, the voltage decay is serious and the structure changes greatly.