Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system

doi:10.1016/j.electacta.2010.11.097

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	Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system
	Lian, Hui-Qin 2; Wang, Jian-Ming 2; Xu, Lei 2; Zhang, Li-Ying 2; Shao, Hai-Bo 2; Zhang, Jian-Qing 1,2; Cao, Chu-Nan 1,2
刊名	ELECTROCHIMICA ACTA
	2011-02-01
卷号	56 期号:5 页码:2074-2080
关键词	Energy storage TiO2-Ni(OH)(2) bilayer Oxidation of Ni(OH)(2) Photoelectrochemical behavior
ISSN号	0013-4686
DOI	10.1016/j.electacta.2010.11.097
通讯作者	Wang, Jian-Ming(wjm@zju.edu.cn)
英文摘要	TiO2-Ni(OH)(2) bilayer electrodes were prepared by the cathodic electrodeposition of Ni(OH)(2) layer on a TiO2/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 TiO2-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 TiO2 were investigated. In our experimental conditions the oxidative energy storage of an UV-irradiated TiO2 photocatalyst in Ni(OH)(2) was obviously enhanced in the electrolyte with 1.0 M OH-. The porous nanostructured TiO2-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 TiO2-Ni(OH)(2) bilayer electrode during UV irradiation exhibited much higher potentials and larger photocurrent than the TiO2/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 TiO2 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.
资助项目	National Natural Science Foundation of China[50972128]
WOS研究方向	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000288227800023
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/107046]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Jian-Ming
作者单位	1.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect Met, Shenyang 110016, Peoples R China 2.Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Lian, Hui-Qin,Wang, Jian-Ming,Xu, Lei,et al. Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system[J]. ELECTROCHIMICA ACTA,2011,56(5):2074-2080.
APA	Lian, Hui-Qin.,Wang, Jian-Ming.,Xu, Lei.,Zhang, Li-Ying.,Shao, Hai-Bo.,...&Cao, Chu-Nan.(2011).Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system.ELECTROCHIMICA ACTA,56(5),2074-2080.
MLA	Lian, Hui-Qin,et al."Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system".ELECTROCHIMICA ACTA 56.5(2011):2074-2080.