分别用溶胶-凝胶法和固相法合成了锂离子电池正极材料LiMn2O4-xSx,在掺S量x＞0.04时,两种方法都不能获得纯的立方尖晶石相.LiMn2O4-xSx电化学性能测试结果表明,S掺杂对LiMn2O4的4V区性能没有明显的改善,但是在3V区具有良好的循环性能,30次循环后容量不但没有衰减而且有一定的增加.S掺杂对LiMn2O4在3V区的改善作用为扩大材料的工作电压范围、提高材料的初始容量提供了一条可能的途径.
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