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高温固相法制备LiVxMn2-xO4/C及其电化学性能
引用本文:张凯庆,史瑞祥,杨杰,王力臻. 高温固相法制备LiVxMn2-xO4/C及其电化学性能[J]. 电池工业, 2013, 0(3): 115-118
作者姓名:张凯庆  史瑞祥  杨杰  王力臻
作者单位:[1]重庆车辆检测研究院,重庆401122 [2]国家客车质量监督检验中心,重庆401122 [3]河南省表界面重点实验室,河南郑州450002
摘    要: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%。

关 键 词:锂离子电池  正极材料  高温固相法  过充电  过放电

Synthesis and electrochemical performance of LiVxMn2-xO4/C prepared with high temperature solid-state method
ZHANG Kai-qing,SHI Rui xiang,YANG Jie,WANG Li-zhen. Synthesis and electrochemical performance of LiVxMn2-xO4/C prepared with high temperature solid-state method[J]. Chinese Battery Industry, 2013, 0(3): 115-118
Authors:ZHANG Kai-qing  SHI Rui xiang  YANG Jie  WANG Li-zhen
Affiliation:a (1. Chongqing Vehicle Test & Research Institute Co. , Ltd. , Chongqing 401122, China; 2. National Coach Quality Supervision — Testing Center, Chongqing 401122, China; 3. Henan Provincial Key Laboratory of SurJace InterJace Science, Zhengzhou, Henan 450002,
Abstract:LiVxMn2-xO4/C cathode material was synthesized by high temperature solid-state meth- od. the crystal structure, surface morphology and electrochemical performance of LiVxMne 04/ 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 30C 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.
Keywords:Li-ion battery  cathode material  high temperature solid-state method  overcharge  overdiseharge
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