焙烧分解-高温固相法制备层状锰酸锂及其性质研究

发布时间：2018-06-13 06:14

  本文选题：锂离子电池 + 正极材料　； 参考：《湖南有色金属》2016年06期

【摘要】：锰酸锂具有尖晶石和层状两种结构,而层状LiMnO_2具有无毒、安全、理论容量高等优点。以专用的MnO_2在空气中高温焙烧分解Mn_2O_3,与电池级LiOH·H_2O为原料,采用高温固相法,合成层状锰酸锂,其最佳合成条件为:锂锰配比为1.03,球磨均匀,经600℃温度,氩气保护气氛下,合成8h,合成的层状LiMnO_2材料,其首次充放电容量分别达到279mAh/g和171mAh/g,经20次循环后容量保持率为96.2%。合成的层状LiMnO_2材料具有相对较好的电化学性能。
[Abstract]:Lithium manganese oxide has spinel and layered structure, while layered LiMnO _ 2 has the advantages of non-toxic, safe and high theoretical capacity. The layered lithium manganate was synthesized by high temperature calcination of Mn2O3 with LiOH H2O as raw material and battery grade LiOH H2O in the air. The optimum conditions were as follows: the ratio of lithium to manganese is 1.03, the ball milling is uniform, and the temperature is 600 鈩，

本文编号：2013018