【摘要】 采用固相法合成了掺杂改性的尖品石型锂锰氧正极材料。XRD结果表明所得材料均呈现良好的尖晶石结构。通过充放电性能测试，发现LiAl_xMn_2-xO₄的循环性能都有了很大程度的改善，循环30次后仍能保持较高的容量，其中以LiAl_0.05Mn_1.97O₄的循环性能最好。更多还原

【Abstract】 The modified spinel lithium manganese doped with several ions was prepared by solid-state method. XRD results show that all the samples possesses perfect spinel structure. The charging and discharging test proves that the cyclic performance of LiAl_xMn_2-xO₄ is improved obviously. The higher capacity is observed after 30 cycles, displaying the best cyclie performance of LiAl_{0. 005} Mn_{1. 95}O₄.更多还原