Synthesis of carbon-coated LaFeO3 and electrochemical properties of the composites in alkaline solution

doi:10.3724/SP.J.1077.2012.12171

	Synthesis of carbon-coated LaFeO3 and electrochemical properties of the composites in alkaline solution
	Qi Wen-Juan 1; Luo Yong-Chun1,2 ; Kang Long 1; Zhang Guo-Qing1
	2012-12-01
发表期刊	Wuji Cailiao Xuebao/Journal of Inorganic Materials
ISSN	1000324X
卷号	27 期号:12 页码:1243-1250
摘要	LaFeO3 nanostructure powders oxide was synthesized by sol-gel method and then LaFeO3/C composite materials containing different amounts of carbon were prepared by heat treatment using sucrose as a carbon source. The crystal structure, surface morphologies and electrochemical properties of the obtained composites coated with various carbon contents were investigated by the techniques of XRD, SEM, TEM, Raman spectroscope and electrochemical method. It was found that single phase nanostructure with perovskite-type LaFeO3 was obtained by Sol-Gel method and the crystal structure of LaFeO3/C could not be changed after coating carbon. Under high temperature, sourose was decomposed into amorphous carbon, which coated on the surface of LaFeO3 particles and formed network-like structure between LaFeO3 particles. Electrochemical measurements showed that the carboncoated composites were superior in the electrochemical performance to the LaFeO3. LaFeO3/C electrodes possessed high discharge capacities, among which the sample adding with 5wt% carbon had the largest discharge capacity of 390 mAh/g. With increasing amount of carbon coated, the exchange current density I0 significantly enhanced, while effect of the coated carbon on the diffusion coefficient of ions was not obvious.
关键词	Amorphous carbon Coatings Crystal structure Electric discharges Electrochemical properties Glass ceramics Iron compounds Nanostructures Perovskite Sol-gel process Sol-gels Carbon coating Carbon-coated composites Discharge capacities Electrochemical measurements ELectrochemical methods Electrochemical performance Exchange current densities Raman spectroscope
DOI	10.3724/SP.J.1077.2012.12171
收录类别	EI ; SCIE
语种	中文
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000313396600002
出版者	Science Press
EI入藏号	20130215895374
EI主题词	Lanthanum compounds
EI分类号	482.2 Minerals - 701.1 Electricity: Basic Concepts and Phenomena - 761 Nanotechnology - 801.4.1 Electrochemistry - 804 Chemical Products Generally - 812.3 Glass - 813.2 Coating Materials - 933 Solid State Physics
来源库	Compendex
分类代码	482.2 Minerals - 701.1 Electricity: Basic Concepts and Phenomena - 761 Nanotechnology - 801.4.1 Electrochemistry - 804 Chemical Products Generally - 812.3 Glass - 813.2 Coating Materials - 933 Solid State Physics
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/111099
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
通讯作者	Qi Wen-Juan
作者单位	1.Lanzhou Univ Technol, Coll Mat Sci & Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China
第一作者单位	材料科学与工程学院
通讯作者单位	材料科学与工程学院
第一作者的第一单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Qi Wen-Juan,Luo Yong-Chun,Kang Long,et al. Synthesis of carbon-coated LaFeO3 and electrochemical properties of the composites in alkaline solution[J]. Wuji Cailiao Xuebao/Journal of Inorganic Materials,2012,27(12):1243-1250.
APA	Qi Wen-Juan,Luo Yong-Chun,Kang Long,&Zhang Guo-Qing.(2012).Synthesis of carbon-coated LaFeO3 and electrochemical properties of the composites in alkaline solution.Wuji Cailiao Xuebao/Journal of Inorganic Materials,27(12),1243-1250.
MLA	Qi Wen-Juan,et al."Synthesis of carbon-coated LaFeO3 and electrochemical properties of the composites in alkaline solution".Wuji Cailiao Xuebao/Journal of Inorganic Materials 27.12(2012):1243-1250.