尖晶石LiMn_2O_4掺杂改性研究进展

Research progress of ion-substituted spinel LiMn_2O_4

尖晶石型LiMn2O4是一种极有前途的锂离子电池正极材料,具有原材料资源丰富、价格低、环境污染小、合成工艺简单等优点,但在循环及存放的过程中,存在容量衰减,在高温情况下尤为严重.对尖晶石型LiMn2O4材料的容量衰减机理进行了探讨,并对该正极材料的金属离子掺杂改性研究进行了综述.

Among various kinds of cathode materials for lithium ion batteries, spinel lithium manganese oxide LiMn_2O_4 is believed to be the most promising one,and it has many advantages, such as its abundant resources, little pollution and simple synthesis process. But it has a disadvantage of capacity attenuation during cycling and storage,especially at a high temperature. This paper described the mechanism of the capacity attenuation and made a review of the investigation into modifying spinel LiMn_2O_4 by doping other metal ions.