Oxidative energy storage behavior of a porous nanostructured TiO(2)-Ni(OH)(2) bilayer photocatalysis system

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	Oxidative energy storage behavior of a porous nanostructured TiO(2)-Ni(OH)(2) bilayer photocatalysis system
	H. Q. Lian; J. M. Wang; L. Xu; L. Y. Zhang; H. B. Shao; J. Q. Zhang; C. N. Cao
	2011
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	56 期号:5 页码:2074-2080
摘要	TiO(2)-Ni(OH)(2) bilayer electrodes were prepared by the cathodic electrodeposition of Ni(OH)(2) layer on a TiO(2)/ITO substrate. The porous Ni(OH)(2) layers were obtained at relatively high current densities (>= 1.0 mA cm(-2)), and the particle size increased with increasing the deposition current density. A porous nanostructured TiO(2)-Ni(OH)(2) bilayer was obtained at a current density of 1.0 mA cm(-2). The effects of OH(-) concentration in the electrolyte and surface structure in the Ni(OH)(2) layer on storage of the oxidative energy of TiO(2) were investigated. In our experimental conditions the oxidative energy storage of an UV-irradiated TiO(2) photocatalyst in Ni(OH)(2) was obviously enhanced in the electrolyte with 1.0 M OH(-). The porous nanostructured TiO(2)-Ni(OH)(2) bilayer electrode showed the notably improved oxidative energy storage performance, resulting from its porous structure and nanostructured Ni(OH)(2) particles. The TiO(2)-Ni(OH)(2) bilayer electrode during UV irradiation exhibited much higher potentials and larger photocurrent than the TiO(2)/ITO electrode. The transition from Ni(OH)(2) to NiOOH under UV irradiation proceeded in the potential range of -0.5 to -0.2 V. much more negative than the Ni(OH)(2)/NiOOH redox potential. A possible mechanism on the oxidative energy storage of an UV-irradiated TiO(2) photocatalyst in Ni(OH)(2) was proposed, and the related experimental results were discussed in terms of the suggested model. (C) 2010 Elsevier Ltd. All rights reserved.
部门归属	[lian, hui-qin; wang, jian-ming; xu, lei; zhang, li-ying; shao, hai-bo; zhang, jian-qing; cao, chu-nan] zhejiang univ, dept chem, hangzhou 310027, zhejiang, peoples r china. [zhang, jian-qing; cao, chu-nan] chinese acad sci, inst met res, state key lab corros & protect met, shenyang 110016, peoples r china.;wang, jm (reprint author), zhejiang univ, dept chem, hangzhou 310027, zhejiang, peoples r china;wjm@zju.edu.cn
关键词	Energy Storage Tio(2)-ni(Oh)(2) Bilayer Oxidation Of Ni(Oh)(2) Photoelectrochemical Behavior Photoelectrochemical Anticorrosion Ability Deposition Electrode Surface
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30495
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Q. Lian,J. M. Wang,L. Xu,et al. Oxidative energy storage behavior of a porous nanostructured TiO(2)-Ni(OH)(2) bilayer photocatalysis system[J]. Electrochimica Acta,2011,56(5):2074-2080.
APA	H. Q. Lian.,J. M. Wang.,L. Xu.,L. Y. Zhang.,H. B. Shao.,...&C. N. Cao.(2011).Oxidative energy storage behavior of a porous nanostructured TiO(2)-Ni(OH)(2) bilayer photocatalysis system.Electrochimica Acta,56(5),2074-2080.
MLA	H. Q. Lian,et al."Oxidative energy storage behavior of a porous nanostructured TiO(2)-Ni(OH)(2) bilayer photocatalysis system".Electrochimica Acta 56.5(2011):2074-2080.