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题名: Low-temperature behavior of Li<inf>3</inf>V<inf>2</inf>(PO <inf>4</inf>)<inf>3</inf>/C as cathode material for lithium ion batteries
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
通讯作者: Kang, X.(kangxy@ms.xjb.ac.cn)
出版地: Springer New York, 233 Spring Street, New York, NY 10013-1578, United States
收录类别: SCI ; EI
ISSN: 14328488
部门归属: (1) Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China ; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China ; (3) Xinjiang Key Laboratory of Electronic Information Materials and Devices, Urumqi, Xinjiang 830011, China
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.
英文摘要: 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.
语种: 英语
内容类型: 会议论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3612
Appears in Collections:材料物理与化学研究室_会议论文

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Recommended Citation:
Liu, Zhiqiang (1); Kang, Xueya (1); Li, Chengfeng (1); Hua, Ning (1); Wumair, Tuerdi (1); Han, Ying (1).Low-temperature behavior of Li3V2(PO 4)3/C as cathode material for lithium ion batteries.见:.,Springer New York, 233 Spring Street, New York, NY 10013-1578, United States,2012,1917-1923
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