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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
Source PublicationJournal of Alloys and Compounds
ISSN9258388
Volume509Issue:5Pages:1897-1900
Abstract

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.

KeywordOlivine Compound Electrochemical Performance Low Temperature Performance Chelation Assisted Method mn2+-doping
Subject AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
DOI10.1016/j.jallcom.2010.10.083
Indexed BySCI
WOS IDWOS:000287167700110
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/1448
Collection材料物理与化学研究室
Corresponding AuthorKang, XY
AffiliationChinese 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
Recommended Citation
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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