尖晶石LiMn_2O_4高温电化学容量衰减及改进

Electrochemical Capacity Fading in High Temperature of Spinel LiMn_2O_4 and its Improvement

综述了高温下尖晶石ＬｉＭｎ２Ｏ４容量衰减的原因、机理研究和改进它的高温性能的方法以及目前的进展，且指出了可能的提高它的高温性能的途径。

The reason for capacity fading and mechanism of spinel LiMn2O4 in high temperature was reviewed, and the capacity fading was mainly caused by the dissolution of manganese, oxidation of electrolyte, and the polarization of electrode. At the same time the solutions and progresses for improving the property of spinel LiMn2O4 in high temperature were also included in this paper, and adding other ions, decreasing the surface of cathode materials, and coating the positive materials were efficiently used to improve its high temperature performance. Furthermore, some methods which can possibly suppresses the capacity fade were suggested.