【摘要】 采用水热法合成Li₄Ti₅O₁₂负极材料,研究材料在大倍率条件下的电化学性能。X射线衍射（XRD）分析结果表明所合成的Li₄Ti₅O₁₂材料晶体尺寸在纳米级。透射电子显微镜（TEM）分析结果表明材料的结晶粒度为50¹00 nm。电化学充放电测试结果表明该材料在10 C倍率充放电时首次放电比容量达到269.9 m A·h/g,循环50次后稳定在177 m A·h/g左右,显示出优异的快速充放电性能。更多还原

【Abstract】 Li₄Ti₅O₁₂anode materials were prepared by a hydrothermal method.The electrochemical performance of the materials under great rate charge-discharge conditions was studied.Results of XRD and TEM analysis shows that the particle size of Li₄Ti₅O₁₂ obtained using this method is in nano-scale and the size range is 50 100 nm.The charge-discharge test results show that the material has good electrochemical performance.The initial discharge capacity reaches 269.9 m A·h/g at the 10 C times charge-discharge rate,and retains 177 m A·h/g after 50 cycles,and Li₄Ti₅O₁₂ anode materials prepared using the hydrothermal method show an excellent fast charge-discharge performance.更多还原