Oxygen reduction investigation on sputtered ZnO layers with nano‐granular structure

Soares Costa, Josiane; Prestat, Michel; Lescop, Benoit; Rioual, Stéphane; Tribollet, Bernard; Holzer, Lorenz; Pélissier, Krystel; Thierry, Dominique

doi:10.1002/celc.201901298

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
Page(s):	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.
URI:	https://digitalcollection.zhaw.ch/handle/11475/19426
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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Soares Costa, J., Prestat, M., Lescop, B., Rioual, S., Tribollet, B., Holzer, L., Pélissier, K., & Thierry, D. (2019). Oxygen reduction investigation on sputtered ZnO layers with nano‐granular structure. ChemElectroChem, 6(20), 5321–5330. https://doi.org/10.1002/celc.201901298

Soares Costa, J. et al. (2019) ‘Oxygen reduction investigation on sputtered ZnO layers with nano‐granular structure’, ChemElectroChem, 6(20), pp. 5321–5330. Available at: https://doi.org/10.1002/celc.201901298.

J. Soares Costa et al., “Oxygen reduction investigation on sputtered ZnO layers with nano‐granular structure,” ChemElectroChem, vol. 6, no. 20, pp. 5321–5330, 2019, doi: 10.1002/celc.201901298.

SOARES COSTA, Josiane, Michel PRESTAT, Benoit LESCOP, Stéphane RIOUAL, Bernard TRIBOLLET, Lorenz HOLZER, Krystel PÉLISSIER und Dominique THIERRY, 2019. Oxygen reduction investigation on sputtered ZnO layers with nano‐granular structure. ChemElectroChem. 2019. Bd. 6, Nr. 20, S. 5321–5330. DOI 10.1002/celc.201901298

Soares Costa, Josiane, Michel Prestat, Benoit Lescop, Stéphane Rioual, Bernard Tribollet, Lorenz Holzer, Krystel Pélissier, and Dominique Thierry. 2019. “Oxygen Reduction Investigation on Sputtered ZnO Layers with Nano‐Granular Structure.” ChemElectroChem 6 (20): 5321–30. https://doi.org/10.1002/celc.201901298.

Soares Costa, Josiane, et al. “Oxygen Reduction Investigation on Sputtered ZnO Layers with Nano‐Granular Structure.” ChemElectroChem, vol. 6, no. 20, 2019, pp. 5321–30, https://doi.org/10.1002/celc.201901298.