Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Oxygen reduction investigation on sputtered ZnO layers with nano‐granular structure
Authors: Soares Costa, Josiane
Prestat, Michel
Lescop, Benoit
Rioual, Stéphane
Tribollet, Bernard
Holzer, Lorenz
Pélissier, Krystel
Thierry, Dominique
et. al: No
DOI: 10.1002/celc.201901298
Published in: ChemElectroChem
Volume(Issue): 6
Issue: 20
Pages: 5321
Pages to: 5330
Issue Date: 2019
Publisher / Ed. Institution: Wiley
ISSN: 2196-0216
Language: English
Subject (DDC): 540: Chemistry
Abstract: Zinc oxide (ZnO) films with nano‐granular structure were deposited by radio‐frequency magnetron sputtering. The absence of preferred orientation was verified by XRD. HAADF‐STEM images revealed a nanoporous structure with pore and grain sizes around 10 nm. The narrowness of the pores enabled to approximate that oxygen reduction takes place at the surface of the layers. During cathodic polarization, the surface of the electrodes became rougher due to the development of nodules on the surface. The ZnO electrodes exhibit a high activity towards oxygen reduction in KOH solution (pH=10). Rotating ring‐disk electrode measurements coupled with reaction modelling allowed to quantitatively demonstrate that the direct reduction prevailed with the indirect pathway being active as well.
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Appears in Collections:Publikationen School of Engineering

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