V掺杂制备尖晶石LiMn204的研究

采用V掺杂固相法合成尖晶石锰酸锂（LiMn2O4），研究了掺杂后对材料的影响，用感应耦合等离子体（ICP）、XRD、SEM、激光粒度分析（LPS）、BET和充放电测试，对材料进行了分析。实验表明掺杂V的LiMn2O4结晶度更完整，颗粒表面更光滑，平均粒径增大了4．55μm，比表面积减小了0．52m2／g；循环30次的容量保持率提高了4．13％。

Research on Synthesis Spinel LiMn204 Doped with Vanadium

Spinel lithium manganate （LiMn204 ）was synthesized with V-doping by solid-state method. The effects of V-doping on the performance of materials were studied. The materials were analyzed by inductively coupled plasma （ICP）, XRD, SEM, laser particle size analysis （LPS）, BET and charge-discharge tests. Experimental results show that the V-doped LiMn204 had more integrated crystallization and smooth particle surface;The average particle size in- creased 4. 55 μm and the specific surface reduced 0. 52 m2/g;The capacity retention after 30 cycles of materials im- proved by 4. 13 %.