介绍了锂离子电池正极材料LiMn2O4的制备方法,并以柠檬酸体系溶胶-凝胶法合成LiMn2O4为例,从溶液pH值及含水量、Li的含量及酸与金属离子摩尔比、合成温度及时间、冷却速度及粒度等方面阐述了影响LiMn2O4性能的因素.实验表明,体系溶液最好为饱和溶液,pH值应控制在6.5左右;锂盐略为过量,柠檬酸与金属离子摩尔比为1:1.最佳烧结温度为750℃～800℃,并合理控制冷却速率,合理控制烧结时间及烧结温度,从而控制粒子半径.
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