title: Electrochemical Water Oxidation of Ultrathin Cobalt Oxide-Based Catalyst Supported onto Aligned ZnO Nanorods.
abstract: 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.
authors.affiliation: Humboldt-Universität zu Berlin , Institut für Chemie, Brook-Taylor-Str. 2, 12489 Berlin, Germany.
authors.forename: Nandanapalli
authors.initials: N
authors.lastname: Koteeswara Reddy
authors.affiliation: Institut für Physik & IRIS Adlershof, Humboldt-Universität zu Berlin , Brook-Taylor-Strasse 6, 12489 Berlin, Germany.
authors.forename: Stefanie
authors.initials: S
authors.lastname: Winkler
authors.affiliation: Institut für Physik & IRIS Adlershof, Humboldt-Universität zu Berlin , Brook-Taylor-Strasse 6, 12489 Berlin, Germany.
authors.forename: Norbert
authors.initials: N
authors.lastname: Koch
authors.affiliation: Humboldt-Universität zu Berlin , Institut für Chemie, Brook-Taylor-Str. 2, 12489 Berlin, Germany.
authors.forename: Nicola
authors.initials: N
authors.lastname: Pinna
keywords: cobalt oxide; electrolysis of water; oxygen evolution reaction; water splitting; zinc oxide nanorods