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

页码：3226 / 3232

页数：7

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