氧气气氛下氧在LiMn_2O_4中的脱嵌研究  

Intercalation and Extraction of Oxygen in LiMn_2O_4 in O_2

作　　者：文衍宣[1] 童张法[1] 周开文[2] 薛敏华[1] 黄振德[1] 陈书科[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004 [2]广西大学材料科学研究所,广西南宁530004

出　　处：《中国锰业》2004年第4期27-30,共4页China Manganese Industry

基　　金：广西区教育厅课题 (桂教科研 [2 0 0 3 ]2 2号 )

摘　　要：用热重 差热(TG DTA)和X射线衍射(XRD)研究了氧气中加热和冷却过程中LiMn2O4体系的重量和组成结构的变化。TG实验说明在室温到1373K内加热和冷却时,LiMn2O4中的氧能可逆地脱出和嵌入,且降低冷却速率有利于氧的嵌入。In order to get the mechanism of oxygen intercalating and extracting in O_2, TG and XRD were used to study the change of gravity and phase of LiMn_2O_4 during the heating or cooling processes. LiMn_2O_4 shows that oxygen intercalation and extraction is reversible upon heating or cooling between the room temperature and 1373 K, which can be monitored using TG. Lowering the cooling rate, it is propitious to intercalate oxygen.

关 键 词：锂离子电池 正极材料 锰酸锂 

分 类 号：TM911[电气工程—电力电子与电力传动]