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Effect of Mn2+-doping in LiFePO4 and the low temperature electrochemical performances
Li Chengfeng; Hua Ning; Wang Chengyun; Kang Xueya; Tuerdi Wumair; Han Ying; Kang, XY
2011
发表期刊Journal of Alloys and Compounds
ISSN9258388
卷号509期号:5页码:1897-1900
摘要

Olivine composites LiFe1-xMnxPO4/C (x = 0, 0.05, 0.1) were prepared by chelation assisted mechanochemical activation method using C2H2O4 as the chelating reagent. The structures of the prepared composites were characterized by X-ray diffraction (XRD). Cyclic voltammetry, ac impedance spectroscopy, galvanostatic charge/discharge performances were studied at room temperature. The discharge capacity of LiFe0.95Mn0.05PO4 was 155.6 mAh g-1 and 102.9 mAh g-1 at 1 C and 10 C rate, respectively. The results indicated Mn2+-doping in LiFePO4 could effectively enhance the electrochemical performances of this olivine compound especially at high charge/discharge rate. In addition, charge/discharge method was also used to characterize the low temperature properties of the different samples. The results showed that the lower the operation temperature was, the poorer the performances were. Furthermore, ac impedance measurement was used to understand the factors of the poor performances at low temperature.

关键词Olivine Compound Electrochemical Performance Low Temperature Performance Chelation Assisted Method mn2+-doping
学科领域Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
DOI10.1016/j.jallcom.2010.10.083
收录类别SCI
WOS记录号WOS:000287167700110
引用统计
被引频次:36[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/1448
专题材料物理与化学研究室
通讯作者Kang, XY
作者单位Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi Xinjiang 830011, Peoples R China;Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China;Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi Xinjiang 830011, Peoples R China
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GB/T 7714
Li Chengfeng,Hua Ning,Wang Chengyun,et al. Effect of Mn2+-doping in LiFePO4 and the low temperature electrochemical performances[J]. Journal of Alloys and Compounds,2011,509(5):1897-1900.
APA Li Chengfeng.,Hua Ning.,Wang Chengyun.,Kang Xueya.,Tuerdi Wumair.,...&Kang, XY.(2011).Effect of Mn2+-doping in LiFePO4 and the low temperature electrochemical performances.Journal of Alloys and Compounds,509(5),1897-1900.
MLA Li Chengfeng,et al."Effect of Mn2+-doping in LiFePO4 and the low temperature electrochemical performances".Journal of Alloys and Compounds 509.5(2011):1897-1900.
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