Preparation of Nano-Crystalline Perovskite-Type LaFe1-xNixO3(x=0 similar to 1.0) and the Electrochemical Properties under UV Excitation

	Preparation of Nano-Crystalline Perovskite-Type LaFe1-xNixO3(x=0 similar to 1.0) and the Electrochemical Properties under UV Excitation
	Hu He-He 2; Luo Yong-Chun 1,2; Kang Long 2; Zhang Guo-Qing 2; Qi Wen-Juan 2
刊名	CHINESE JOURNAL OF INORGANIC CHEMISTRY
	2012-10
卷号	28 期号:10 页码:2130-2138
关键词	LaFe1-xNixO3 UV excitation electrochemical performance
ISSN号	1001-4861
英文摘要	LaFel(1-x)Ni(x)O(3) (x=0, 0.2, 0.4, 0.6, 0.8, 1.0) nano-crystalline powders were synthesized by sot-gel method. The phase structure, morphology and composition of the LaFe1-xNixO3 were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The charge-discharge performance and electrochemical kinetics properties of the oxides in alkaline solution were characterized by electrochemical methods, meanwhile the electrochemical behavior of the electrodes before and after UV excitation was comparatively studied. It was found that single phase nano-crystalline perovskite-type LaFe1-xNi3O3 composite oxides was obtained by sot-gel method with nitrate as raw materials. As the substitute amount x increasing, the phase structures of LaFe1-xNi3O3 transform from orthorhombic to rhombohedral type, the both molecular volumes and the grain sizes decreased. Electrochemical experimental results show that, with increasing x of Ni doping, the discharge capacity of LaFe1-xNixO3 electrodes increased gradually before the UV excitation, while the discharge capacity and the exchange current density I-o significantly enhanced under visible light irradiation. After the UV excitation, the largest discharge capacities could be up to 483.1 mAh.g(-1) and the exchange current density I-o increased by a wide margin from 3.54 similar to 11.58 mA.g(-1) before the UV excitation to 8.37 similar to 40.11 mA.g(-1).
WOS研究方向	Chemistry
语种	中文
出版者	CHINESE CHEMICAL SOC
WOS记录号	WOS:000310490300016
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/34842]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Luo Yong-Chun
作者单位	1.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, Coll Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Hu He-He,Luo Yong-Chun,Kang Long,et al. Preparation of Nano-Crystalline Perovskite-Type LaFe1-xNixO3(x=0 similar to 1.0) and the Electrochemical Properties under UV Excitation[J]. CHINESE JOURNAL OF INORGANIC CHEMISTRY,2012,28(10):2130-2138.
APA	Hu He-He,Luo Yong-Chun,Kang Long,Zhang Guo-Qing,&Qi Wen-Juan.(2012).Preparation of Nano-Crystalline Perovskite-Type LaFe1-xNixO3(x=0 similar to 1.0) and the Electrochemical Properties under UV Excitation.CHINESE JOURNAL OF INORGANIC CHEMISTRY,28(10),2130-2138.
MLA	Hu He-He,et al."Preparation of Nano-Crystalline Perovskite-Type LaFe1-xNixO3(x=0 similar to 1.0) and the Electrochemical Properties under UV Excitation".CHINESE JOURNAL OF INORGANIC CHEMISTRY 28.10(2012):2130-2138.