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锯齿状Li₄ Ti₅O₁₂纳米片的合成及其电化学性能研究

Synthesis of sawtooth-like Li₄Ti₅O₁₂ nanosheets as anode materials for Li-ion batteries

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【Author】 CHEN Ji-zhang,YANG Li,FANG Shao-hua,TANG Yu-feng (School of Chemistry and Chemical Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

【机构】上海交通大学化学化工学院；

【摘要】利用水热法及其后续热处理制备出了锯齿状的Li₄Ti₅O₁₂纳米片,并通过恒流充放电方法测试其电化学性能。结果表明,锯齿状Li₄Ti₅O₁₂纳米片具有杰出的高倍率性能和循环稳定性,在高达10000mA/g（57C）的电流密度下,经过200次循环后仍然具有132mAh/g的放电容量,是具有应用前景的锂离子高倍率负极材料。更多还原

【Abstract】 Li₄Ti₅O₁₂ microspheres assembled by nanosheets have been successfully synthesized via a hydrothermal process and subsequent thermal treatment.The electrochemical behavior of as-prepared Li₄Ti₅O₁₂ has been investigated by galvanostatic methods.With the intriguing and unique sawtooth-like morphology,it presents exceptional high rate performance and excellent cycling stability.Up to 132mAh/g is obtained after 200 cycles at 10000mA/g（57C）,proving itself promising for high-rate applications.更多还原