Electrochemical Water Oxidation of Ultrathin Cobalt Oxide-Based Catalyst Supported onto Aligned ZnO Nanorods

被引：40
作者：
Reddy, Nandanapalli Koteeswara [1 ,4 ]
Winkler, Stefanie [2 ,3 ]
Koch, Norbert [2 ,3 ]
Pinna, Nicola [1 ]
机构：
[1] Humboldt Univ, Inst Chem, Brook Taylor Str 2, D-12489 Berlin, Germany
[2] Humboldt Univ, Inst Phys, Brook Taylor Str 6, D-12489 Berlin, Germany
[3] Humboldt Univ, IRIS Adlershof, Brook Taylor Str 6, D-12489 Berlin, Germany
[4] BML Munjal Univ, Sch Engn & Technol, Dept Phys, Sidhrawali 122413, Gurgaon, India
来源：
ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 05期
关键词：
water splitting; zinc oxide nanorods; cobalt oxide; oxygen evolution reaction; electrolysis of water; NANOSTRUCTURES; SURFACE; FILMS; PHOTOANODES; DEPOSITION; NANOWIRE; PHOTOELECTRODES; ELECTRODES; EFFICIENCY; HYDROGEN;
D O I：
10.1021/acsami.5b10858
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A stable and durable electrochemical water oxidation catalyst based on CoO functionalized ZnO nanorods (NRs) is introduced. ZnO NRs were grown on fluorine doped tin oxide (FTO) by using a low-temperature chemical solution method and were functionalized with cobalt oxide by electrochemical deposition. The electrochemical water oxidation performance of cobalt oxide functionalized ZnO NRs was studied under alkaline (pH = 10) conditions. From these studies, it is noticed that cobalt oxide functionalized ZnO NRs show electrocatalytic activity toward water oxidation with current density on the order of several mA cm(-2). Further, 30 s CoO deposited ZnO nanorods exhibited excellent galvanostatic stability at a current density of 1 mA cm(2) and potentiostatic stability at 1.25 V vs Ag/AgCl over an electrolysis period of 1 h.
引用
收藏
页码：3226 / 3232
页数：7
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