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学科主题: Electrochemistry
题名: Low-temperature behavior of Li3V2(PO4)(3)/C as cathode material for lithium ion batteries
作者: Liu Zhiqiang; Kang Xueya; Li Chengfeng; Hua Ning; Wumair Tuerdi; Han Ying
通讯作者: Kang, XY
关键词: Lithium vanadium phosphate ; Low-temperature electrochemical performance ; Cathode ; Carbon coating ; Lithium ion battery
刊名: JOURNAL OF SOLID STATE ELECTROCHEMISTRY
发表日期: 2012
DOI: 10.1007/s10008-011-1584-4
卷: 16, 期:5, 页:1917-1923
收录类别: SCI
资助者: Chinese Academy of Sciences 20092A401; West Light Foundation of the Chinese Academy of Sciences XB200919; science and technology projects of Urumqi K111410005
摘要: The electrochemical performance of Li3V2(PO4)(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 A degrees 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 A degrees 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, R (ct) (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 low-temperature electrochemical performance of Li3V2(PO4)(3)/C is mainly limited by R (ct), D (Li), and electrolyte.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/2815
Appears in Collections:新疆维吾尔自治区电子信息材料与器件重点实验室_期刊论文

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作者单位: Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Xinjiang, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Xinjiang, Peoples R China;Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Liu Zhiqiang,Kang Xueya,Li Chengfeng,et al. Low-temperature behavior of Li3V2(PO4)(3)/C as cathode material for lithium ion batteries[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2012,16(5):1917-1923.
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