Li_(1+x)Cr_yMn_(2-y)O_4合成工艺对其结构和性能的影响

The Influence of Li_(1+x)Cr_yMn_(2-y)O_4 Synthetic Conditions on its Structure and Electrochemical Performance

用固相法高温合成得到尖晶石Li1 +xCryMn2 -yO4作锂离子二次电池正极活性材料 ,研究了不同合成条件对Li1 +xCryMn2 -yO4结构的影响 ,电化学性能测试表明LiMn2 O4掺Cr后初次放电容量有所下降 ,但循环性能有较大提高。

The influences of the synthetic conditions of the positive electrode material Li 1+ x Cr y Mn 2- y O 4 for the secondary lithium ion battery on its structure and electrochemical properties were studied.The experimental results showed that although the Cr substitution reduced the initial capacity,it was beneficial to the cycles of LiMn 2O 4.