Mechanism of lithium insertion in carbons pyrolyzed at low temperature  

作　　者：Hongqi Xiang Shibi Fang Yingyan Jiang 

机构地区：[1]Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China [2]Tsing Hua Univ, Dept Chem, Beijing 100084, Peoples R China

出　　处：《Chinese Science Bulletin》1999年第5期385-390,共6页

摘　　要：Carbons pyrolyzed at temperature ranging from 500℃ to 1 000℃ are premising materials for high-energy density lithium batteries. These carbons not only possess a capacity higher than the theoretical value of graphite, but also display a different electrochemical behavior from that of graphite.Mechanisms now available for this phenomenon are reviewed after the presentation of mechanism of lithium intercalation in graphite. Based on the recent research, a new model for lithium insertion in carbons pyrolyzed at low temperature and some ideas for further study are proposed.Carbons pyrolyzed at temperature ranging from 500°C to 1 000°C are promising materials for high-energy density lithium batteries. These carbons not only possess a capacity higher than the theoretical value of graphite, but also display a different electrochemical behavior from that of graphite. Mechanisms now available for this phenomenon are reviewed after the presentation of mechanism of lithiun intercalation in graphite. Based on the recent research, a new model for lithium insertion in carbons pyrolyzed at low temperature and sane ideas for further study are proposed.

关 键 词：LITHIUM ion BATTERIES ANODE CARBONACEOUS materials mechanism. 

分 类 号：TM911[电气工程—电力电子与电力传动]