研究了锂离子负极材料掺镁尖晶石Li4-xMgxTi5O12(0≤x≤0.25)的合成、结构及电化学性能.XRD结构分析显示Mg2+进入晶格后可能占据正四面体(8a)和正八面体(16d)位置;掺镁后电导率有所提高,特别是Li3.75Mg0.25Ti5O12(x=0.25),其电化学反应阻抗显著降低,电导率提高了半个数量级;同时降低了面积比阻抗(ASI),改善了材料倍率性能.
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