Mo掺杂LiMn_2O_4的制备及其电化学性能研究  

Preparation and performance research on LiMn_2O_4 doped with molybdenum element

作　　者：贾海涛[1] 张宏坤 李文娟[1] 张玉峰 张彦杰 丁克强[1,3] 

机构地区：[1]河北师范大学化学与材料科学学院,河北石家庄050016 [2]中国恒天集团宏大化纤技术装备有限公司,北京100078 [3]风帆股份有限公司,河北保定071057

出　　处：《电池工业》2011年第3期168-171,共4页Chinese Battery Industry

基　　金：河北省自然科学基金项目(B2011205014);河北师范大学应用开发基金项目(L2010k03)

摘　　要：利用高温固相合成法制备了Mo掺杂的锂离子电池正极材料LiMn2O4,并利用XRD、SEM、EIS、EDS等分析手段对其进行了表征。XRD数据表明所得到的样品具有良好的尖晶石结构;Nyquist谱图表明,掺杂钼的LiMn2O4电荷传递电阻明显减小。试验结果初步说明:Mo的掺杂是改善LiMn2O4电化学行为的有效方法之一。Li-ion battery cathode material of LiMn2O4 doped with molybdenum element was prepared for the first time by using high-temperature solid-state method.XRD,SEM,EIS and EDS tests were employed to characterize the obtained samples.XRD analysis showed that the as-prepared samples had good spinel structure.Nyquist plot obviously showed that the charge transfer resistance of LiMn2O4 doped with molybdenum element decreased when compared to the pure LiMn2O4.This work demonstrated that doping molybdenum element into LiMn2O4 was a feasible method to improve the electrochemical performance of LiMn2O4.

关 键 词：锂离子电池 正极材料 LIMN2O4 钼元素 

分 类 号：TM912.9[电气工程—电力电子与电力传动]