通过固相合法制备了新型锂离子电池负极材料Li1.1V0.9O2,考察不同合成工艺对其结构、形貌及电化学性能的影响。采用X射线衍射、扫描电子显微镜和恒电流充放电法研究了试样的结构、形貌和电化学性能。实验结果表明：采用两段烧结法合成的试样结构更完整、粒径分布更均匀、电化学性能更优良。在1 C倍率下,充电容量高达275 mAh/g,经过50次循环后,充电容量保持率高达96.73%。
New anode materials Li1.1V0.9O2 were synthesized successfully by solid-state reaction method.Microstructure,morphology and electrochemical performance of the samples were investigated by X-ray diffraction,scanning electron microscopy and galvanostatic charge and discharge tests.The results show that Li1.1V0.9O2 synthesized by two-staged heat treatment exhibits more perfect crystal structure,more uniform grains and more excellent electrochemical performance.Its charge capacity is 275 mAh/g and its retention of charge capacity is 96.73 % after 50 cycles at 1 C rate.
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