超声振荡结合液相还原法合成尖晶石LiMn_2O_4  

Synthesizing spinel LiMn_2O_4 by ultrasonic oscillation combined with liquid reduced method

作　　者：林永[1] 赵锟[1] 王曼丽[1] 隗玉林 

机构地区：[1]遵义师范学院化学系,贵州遵义563002 [2]成都银鑫新能源有限公司,四川成都610000

出　　处：《电池》2012年第2期103-105,共3页Battery Bimonthly

基　　金：贵州省教育厅自然科学研究资助项目(教黔科2007071);遵义市科技局基金资助项目(遵市科合社字[2008]27号)

摘　　要：采用超声振荡结合液相还原法,制备尖晶石LiMn2O4,对产物进行XRD、SEM分析及电化学性能测试。超声振荡生成的前驱体具有更接近尖晶石的过渡结构,制得的LiMn2O4粒子更致密、均匀。在3.5～4.5 V循环,0.1C首次放电比容量为126 mAh/g,第50次循环的放电比容量为122 mAh/g。Spinel LiMn2O4 was prepared by using ultrasonic oscillation combined with liquid reduced method. XRD, SEM analyses and electrochemical performance test were taken to the products. The precursor obtained by ultrasonic oscillation had the transition structure closer to spinel, the prepared LiMn2O4 particle was more denser and regular. When cycled in 3.5 - 4.5 V, the 0.1 C initial specific discharge capacity was 126 mAh/g, the specific discharge capacity at the 50th cycle was 122 mAh/g.

关 键 词：尖晶石锰酸锂(LiMn2O4) 超声振荡 液相还原法 

分 类 号：O614.111[理学—无机化学]