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题名: One-step preparation of optically transparent Ni-Fe oxide film electrocatalyst for oxygen evolution reaction
作者: Zhang, Doudou1, 2, 3;  Meng, Lijian4, 5;  Shi, Jingying1;  Wang, Nan1, 6;  Liu, Shengzhong1, 2, 3;  Li, Can1
关键词: Optically transparent ;  Thin film electrocatalyst ;  Ni-Fe oxide ;  Oxygen evolution reaction
刊名: ELECTROCHIMICA ACTA
发表日期: 2015-07-01
DOI: 10.1016/j.electacta.2015.04.101
卷: 169, 页:402-408
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: Optically transparent cocatalyst film materials is very desirable for improved photoelectrochemical (PEC) oxygen evolution reaction (OER) over light harvesting photoelectrodes which require the exciting light to irradiate through the cocatalyst side, i.e., front-side illumination. In view of the reaction overpotential at electrode/electrolyte interface, the OER electrocatalysts have been extensively used as cocatalysts for PEC water oxidation on photoanode. In this work, the feasibility of a one-step fabrication of the transparent thin film catalyst for efficient electrochemical OER is investigated. The Ni-Fe bimetal oxide films, similar to 200 nm in thickness, are used for study. Using a reactive magnetron co-sputtering technique, transparent (> 50% in wavelength range 500-2000 nm) Ni-Fe oxide films with high electrocatalytic activities were successfully prepared at room temperature. Upon optimization, the as-prepared bimetal oxide film with atomic ratio of Fe/Ni = 3: 7 demonstrates the lowest overpotential for the OER in aqueous KOH solution, as low as 329 mV at current density of 2 mA cm(-2), which is 135 and 108 mV lower than that of as-sputtered FeOx and NiOx thin films, respectively. It appears that this fabrication strategy is very promising to deposit optically transparent cocatalyst films on photoabsorbers for efficient PEC water splitting. (C) 2015 Elsevier Ltd. All rights reserved.
关键词[WOS]: SOLAR HYDROGEN-PRODUCTION ;  WATER OXIDATION ;  NICKEL-OXIDE ;  PHOTOELECTROCHEMICAL CELLS ;  ELECTROCHEMICAL-BEHAVIOR ;  ALKALINE ELECTROLYTES ;  ENERGY CONVERSION ;  PHOTOANODES ;  ELECTRODES ;  SPECTROSCOPY
语种: 英语
WOS记录号: WOS:000355007400049
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146286
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Minist Educ, Key Lab Appl Surface & Colloid Chem, Beijing, Peoples R China
3.Shaanxi Normal Univ, Sch Mat Sci & Engn, Xian 710062, Peoples R China
4.Inst Politecn Porto, Dept Fis, Inst Super Engn Porto, P-4200072 Oporto, Portugal
5.Univ Minho, Ctr Fis, P-4800058 Guimaraes, Portugal
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Zhang, Doudou,Meng, Lijian,Shi, Jingying,et al. One-step preparation of optically transparent Ni-Fe oxide film electrocatalyst for oxygen evolution reaction[J]. ELECTROCHIMICA ACTA,2015,169:402-408.
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