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Low-temperature behavior of Li3V2(PO 4)3/C as cathode material for lithium ion batteries

文献类型：会议论文

作者Liu, Zhiqiang (1) ; Kang, Xueya (1) ; Li, Chengfeng (1) ; Hua, Ning (1) ; Wumair, Tuerdi (1) ; Han, Ying (1)
出版日期2012
关键词Lithium vanadium phosphate Low-temperature electrochemical performance Cathode Carbon coating Lithium ion battery
页码1917-1923
通讯作者Kang, X.(kangxy@ms.xjb.ac.cn)
中文摘要The electrochemical performance of Li3V2(PO 4)3/C was investigated at various low temperatures in the electrolyte 1.0 mol dm-3 LiPF6/ethyl carbonate (EC)+diethyl carbonate (DEC)+dimethyl carbonate (DMC) (volume ratio 1:1:1). The stable specific discharge capacity is 125.4, 122.6, 119.3, 116.6, 111.4, and 105.7 mAh g-1 at 26, 10, 0, -10, -20, and -30 °C, respectively, in the voltage range of 2.3-4.5 V at 0.2 C rate. When the temperature decreases from -30 to -40 °C, there is a rapid decline in the capacity from 105.7 to 69.5 mAh g-1, implying that there is a nonlinear relationship between the performance and temperature. With temperature decreasing, Rct (corresponding to charge transfer resistance) increases rapidly, D (the lithium ion diffusion coefficients) decreases sharply, and the performance of electrolyte degenerates obviously, illustrating that the lowtemperature electrochemical performance of Li3V2(PO4) 3/C is mainly limited by Rct, DLi, and electrolyte.
收录类别SCI ; EI
会议录出版地Springer New York, 233 Spring Street, New York, NY 10013-1578, United States
语种英语
ISSN号14328488
源URL[http://ir.xjipc.cas.cn/handle/365002/3612]  
专题新疆理化技术研究所_材料物理与化学研究室
推荐引用方式
GB/T 7714		 Liu, Zhiqiang ,Kang, Xueya ,Li, Chengfeng ,et al. Low-temperature behavior of Li3V2(PO 4)3/C as cathode material for lithium ion batteries[C]. 见:.

入库方式： OAI收割

来源：新疆理化技术研究所

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