四氧化三锰为锰源合成高性能锰酸锂的工艺研究

Study on the synthesis of high-performance LiMn_2O_4 by using Mn_3O_4 as manganese source

为了提高锰酸锂的比容量和循环性能,以四氧化三锰代替电解二氧化锰(EMD),同时进行元素掺杂,并利用正交实验法优化四氧化三锰和碳酸锂固相合成锰酸锂工艺。最终得到比容量110mA·h/g,常温25℃1C循环500次容量保持率为97.3%的锰酸锂产品。

In order to improve the specific capacity and cycle performance of LiMn2O4,Mn3O4 was used instead of EMD,and element doping was carried out at the same time.Orthogonal experiment was used to optimize the solid-state synthesis process of LiMn2O4 from Mn3O4 and lithium carbonate.Finally,LiMn2O4 with specific capacity of 110 mA·h/g and capacity retention rate of 97.3%for 500 cycles at 1 Crate at 25℃are obtained.