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采用高温固相法合成了LiVx Mn2-x O4/C正极材料,并通过X射线衍射(XRD)、扫描电子显微镜(SEM)以及充放电测试考察了产物的晶体结构、微观形貌以及电化学性能。实验结果表明:合成样品的颗粒大小较均匀,同时具有最佳的电化学性能,-30℃放电容量可达到额定容量的79.3%,4.8V过充循环10次后,模拟电池的容量保持率为94.8%。
Abstract：LiVx Mn2-xO4/C cathode material was synthesized by high temperature solid-state method.The crystal structure,surface morphology and electrochemical performance of LiVxMn2-xO4/C were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM),and charge-discharge tests.The results showed that the sample had a uniform particle distribution,which delivered the best electrochemical performance.The discharge capacity of the stimulant battery at -30℃ could reach 79.3% of the rated capacity.The capacity retention of the stimulant battery was 94.8% after 10 cycles of 4.8V overcharge.
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基本信息:
中图分类号:TM912.9
引用信息:
[1]张凯庆,史瑞祥,杨杰,等.高温固相法制备LiV_xMn_(2-x)O_4/C及其电化学性能[J].电池工业,2013,18(Z2):115-118.