Carbon-coated Li3V2(PO4)(3) composite cathode material for lithium-ion batteries: Sol-gel synthesis and performance

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	Carbon-coated Li3V2(PO4)(3) composite cathode material for lithium-ion batteries: Sol-gel synthesis and performance
	Q. Q. Chen; W. C. He; J. M. Wang; Z. Tang; H. B. Shao; J. Q. Mang
	2008
发表期刊	Chinese Journal of Inorganic Chemistry
ISSN	1001-4861
卷号	24 期号:2 页码:181-190
摘要	A carbon-coated Li3V2(PO4)(3) Composite cathode material was synthesized by a sol-gel method using V2O5, LIOH center dot H2O, H2O2, NH4H2PO4 and citric acid as starting materials. Properties of the prepared composite material were investigated using XPS, XRD, SEM, Raman spectroscopy, TEM, and various electrochemical techniques. The relationship among structure, calcination temperature, electronic conductivity and the electrochemical performance of samples was also studied. The sample obtained had a monoclinic structure with a space group of P2(1)/n and a rough and porous carbon surface layer. The electronic conductivity of the carbon-coated Li3V2(PO4)3 samples synthesized at 800 degrees C was about a factor of similar to 10(4) higher than that of carbon-free Li3V2(PO4)(3) prepared by solid-state hydrogen reducing reaction. The results show that the carbon-coated Li3V2(PO4)(3) is superior in the electrochemical performance to the carbon-free sample. In the voltage range of 3.0 similar to 4.3 V, the carbon-coated Li3V2(PO4)(3) synthesized at 800 degrees C displays large reversible capacities (128 mAh center dot g(-1) at 0.1C and 109 mAh center dot g(-1) at 2C, respectively) and excellent cyclic stability. The reason for the excellent electrochemical performance of the carbon coated Li3V2(PO4)(3) is discussed.
部门归属	[chen quan-qi; he wei-chun; wang jian-ming; tang zheng; shao hai-bo; mang jian-qing] zhejiang univ, dept chem, hangzhou 310027, peoples r china. [chen quan-qi] xiangtan univ, coll chem, xiangtan 411105, peoples r china. [he wei-chun] henan univ technol, coll mat sci & engn, zhengzhou 450007, peoples r china. [mang jian-qing] chinese acad sci, state key lab corros & protect, shenyang 110015, peoples r china.;chen, qq (reprint author), zhejiang univ, dept chem, hangzhou 310027, peoples r china;wjm@zju.edu.cn
关键词	Li3v2(Po4)(3) Sol-gel Method Carbon-coated Lithium-ion Batteries State Synthesis Routine Electrochemical Performance High-capacity Lifepo4 Pyrolysis Precursor Surface Xps Fe
URL	查看原文
WOS记录号	WOS:000253623100003
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32676
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. Q. Chen,W. C. He,J. M. Wang,et al. Carbon-coated Li3V2(PO4)(3) composite cathode material for lithium-ion batteries: Sol-gel synthesis and performance[J]. Chinese Journal of Inorganic Chemistry,2008,24(2):181-190.
APA	Q. Q. Chen,W. C. He,J. M. Wang,Z. Tang,H. B. Shao,&J. Q. Mang.(2008).Carbon-coated Li3V2(PO4)(3) composite cathode material for lithium-ion batteries: Sol-gel synthesis and performance.Chinese Journal of Inorganic Chemistry,24(2),181-190.
MLA	Q. Q. Chen,et al."Carbon-coated Li3V2(PO4)(3) composite cathode material for lithium-ion batteries: Sol-gel synthesis and performance".Chinese Journal of Inorganic Chemistry 24.2(2008):181-190.