中文摘要：

采用传统方法成功制备了LiMn2O4正极材料,并利用微分电容和电化学阻抗谱研究了储存温度对LiMn2O4正极材料锂离子嵌脱动力学的影响。微分电容曲线表明LiMn2O4中锂离子的两步嵌脱机制是完全不同的。电化学阻抗谱表明,随着储存温度的升高,Li^＋在电极活性物质中的扩散变得困难,从而导致电荷转移电阻迅速增大。

英文摘要：

LiMn2O4 positive electrode material was successfully synthesized by conventional method,and the effect of storage temperatures on kinetics of lithium ion insertion for LiMn2O4 positive electrode material was investigated by differential capacitance and electrochemical impedance spectroscopy（EIS）.The differential capacitance curve showed that the two-stage mechanism of the lithium insertion-extraction in LiMn2O4 was completely different.EIS indicated that the diffusion of Li^＋ in the active material became difficult with increasing of storage temperatures,therefore resulting in a rapid increase of charge transfer resistance.