动力电池正极材料锰酸锂的改性及发展前景

Modification and development prospect of lithium manganate as cathode material for power battery

由于尖晶石型锰酸锂具有无污染、比能量高、成本低且资源丰富等特点,现已发展成为最具潜力的锂离子电池正极材料之一,但是该材料也存在循环时容量的衰减速度较快这一缺点,这同时也是制约其发展的主要因素。以相关研究为基础,对锰酸锂的制备方法及各方法的优缺点进行分析,同时介绍了表面修饰和体相掺杂改性的相关研究进展。

The spinel type lithium manganate was with the characteristics of no pollution, high energy density, lowost, and its resource was rich, it had been one of the most potential cathode materials for lithium ion batteries. Buthe material was with the shortcoming of cycling capacity decay faster. This was the main factor which restricted itsdevelopment. The advantages and disadvantages of lithium manganate preparation method and the preparationmethod were analyzed based on the related research of the author. At the same time, the surface modification andmodified by doping the related research progress were introduced.