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Studies of V doping for the LiFePO4-based Li Ion batteries
Hua Ning; Wang Chenyun; Kang Xueya; Wumair Tuerdi; Han Ying; Kang, XY
2010
发表期刊Journal of Alloys and Compounds
ISSN9258388
卷号503期号:1页码:204-208
摘要Alien atom doping has been adopted to modify the electrochemical performance of olivine type LiFePO4 for cathode material. Here, we report that vanadium-doping can improve the performance of LiFePO4/C immensely. LiFePO4/C and V-doped LiFePO4/C cathode materials were first synthesized by carbothermal reduction method. Physico-chemical characterizations were done by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Electrochemical behavior of the cathode materials was analyzed using cyclic voltammetry (CV) and galvanostatic measurements. ICP and XRD analyses indicated that V ions were sufficiently doped in LiFePO4 and did not alter its crystal structure and exhibited the variation of lattice parameters with the doped degree. From the CV, the V ion doping affected the Li+ ionic diffusion coefficient during both the delithiation and lithiation processes and it became larger with an appropriate amount doping. From the results, it is noted that vanadium ions doping can improve performance of LiFePO4, especially on the aspect of stable cycle-life at higher C rate.
关键词Olivine Compound V-ion Doping Li++ Diffusion Coefficient Electrochemical Properties
学科领域Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
DOI10.1016/j.jallcom.2010.04.233
收录类别SCI
WOS记录号WOS:000280623000041
引用统计
被引频次:62[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/365002/1827
专题材料物理与化学研究室
通讯作者Kang, XY
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
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Hua Ning,Wang Chenyun,Kang Xueya,et al. Studies of V doping for the LiFePO4-based Li Ion batteries[J]. Journal of Alloys and Compounds,2010,503(1):204-208.
APA Hua Ning,Wang Chenyun,Kang Xueya,Wumair Tuerdi,Han Ying,&Kang, XY.(2010).Studies of V doping for the LiFePO4-based Li Ion batteries.Journal of Alloys and Compounds,503(1),204-208.
MLA Hua Ning,et al."Studies of V doping for the LiFePO4-based Li Ion batteries".Journal of Alloys and Compounds 503.1(2010):204-208.
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