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.
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 )
关键词
锂离子电池
正极材料
锰酸锂
Lithium-ion batteries
Cathode material
LiMn_2O_4
