摘要
作为锂离子电池正极材料的锂锰氧化物体系因其价格便宜 ,无污染 ,安全 ,被认为是锂离子电池中最有发展前景的正极材料 ,但由于其在高温下的循环性能不好 ,容量衰减较快 ,大大影响了其商业化的进程。介绍了造成其容量衰减的主要原因 ,总结并比较了近来用于提高其电化学性能的几种方式———优化合成条件及合成方法 ,掺杂和表面修饰 ,以及以上几种方式相结合的方法。而将以上几种方式结合起来的方法是今后解决锂锰氧化物正极材料容量衰减的最好途径。
The cathode material of LiMn 2O 4 is considered as the best material to the lithium ion secondary battery due to its low price,no pollution and its safety potential.Yet because of the capacity fading at high temperatures,the procedure of it's business is slow.Four main ways to solve the problem were reviewed that including the optimization of synthesis,element doping,surface modification and the way that we had the preceding three ways banded together.Yet Only in the way that we have the three ways banded together can we solve the problem more easily.
出处
《盐湖研究》
CSCD
2003年第2期60-65,共6页
Journal of Salt Lake Research
