微波-高分子网络法制备可充锂离子电池正极材料LiMx Mn2 O4(M=La,Nd,Y)

微波－高分子网络技术（m-p)作为一种新方法合成可充锂离子电池负极材料的同时，也被用于制备良好结晶的LiMxMn2O4(M=La,Nd,Y)。XRD测试结果表明，用此法可合成尖晶石LiMn2O4及掺杂LiMn2O4。通过电化学测试证明，所合成样品的容量高，循环效率高。循环伏安及计量电量数据表明Li^ 在LiMxMn2O4中嵌入／脱嵌更容易。最后通过磁性测试对Li^ 在LiMxMn2O4中的扩散行为作了说明。

LiMxMn2O4 (M=La, Nd, Y) prepared by microwave-polymer network process for rechargeable lithium batteries

A new process,microwave polymer network (m p) process was developed for preparing cathod material of chargeable lithium cell, while, well crystallized doped LiM x Mn 2O 4 (M=La, Nd, Y) was prepared by the process. XRD results showed that fine crystallinity spinel of pure and doped LiMn 2O 4 could be prepared by m p process. Electrochemistry tests proved the the samples had better capacity and cycling efficiency. Cyclic voltammograms and chronoamperometric data indicated that Li + extracted and inserted more easily in LiM x Mn 2O 4. Finally the diffusion behavior of Li + in LiM x Mn 2O 4 was conducted by magnitic test.