锂锰氧材料在充放电过程中的结构变化  

The Changes of the Microstructure of the Spinel LiMn_2O_4 During Charging-Discharging

作　　者：徐仲榆[1] 苏玉长[1] 王要武[1] 

机构地区：[1]湖南大学新型炭材料研究所,湖南长沙410082

出　　处：《电池》2000年第3期101-104,共4页Battery Bimonthly

摘　　要：采用恒电流充放电和原位XRD法考察了尖晶石型LixMn2 O4 材料在充放电过程中的结构变化 ,实验结果表明 :过度充电和放电都会引起结构的不可逆变化 ,从而使充放电效率下降。The changes of the microstructure of spinel LiMn 2O 4 during charging-discharging were examined by means of galvano static charging-discharging-in situ XRD method.The experimental results showed that the overcharging and overdischarging of the spinel Li x Mn 2O 4 could cause the irreversible changes of the microstructure.It brought about the decrease of charging-discharging efficiency.

关 键 词：锂离子电池 充放电过程 锂锰氧材料 LIXMN2O4 

分 类 号：TM91[电气工程—电力电子与电力传动]