Ultrastable CoxSiyOz Nanowires by Glancing Angle Deposition with Magnetron Sputtering as Novel Electrocatalyst for Water Oxidation

Cobalt is one of the most promising non-noble metal as electrocatalyst for water oxidation. Herein, a highly stable silicon-cobalt mixed oxide thin film with a porous columnar nanostructure is proposed as electrocatalyst for oxygen evolution reaction (OER). CoOx and CoxSiyOz layers with similar thickness were fabricated at room temperature by magnetron sputtering in a glancing angle configuration (MS-GLAD) on tin-doped indium oxide (ITO) substrates. After characterization, a comparative study of the electrocatalytic performance for OER of both layers was carried out. The excellent long-term stability as electrocatalyst for OER of the porous CoxSiyOz thin film demonstrates that the presence of silicon on the mixed oxide network increases the mechanical stability of the Si/Co layer, whilst maintaining a considerable electrocatalytic response. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Authors
Cano M.1 , Garcia-Garcia F.J.2, 3 , Rodríguez-Padrón D.4 , González-Elipe A.R.5 , Giner-Casares J.J.1 , Luque R. 4, 6
Journal
ChemCatChem
Publisher
Wiley Blackwell
Language
English
Status
Published
Link
External link
DOI
10.1002/CCTC.201901730
Year
2019
Organizations
  • 1 Department of Physical Chemistry & Applied Thermodynamics Institute of Nanochemistry (IUNAN), University of Córdoba (UCO), Campus Universitario de Rabanales, Córdoba, 14014, Spain
  • 2 Department of Inorganic Chemistry & Chemical Engineering, IUNAN, UCO, Campus Universitario de Rabanales, Córdoba, 14014, Spain
  • 3 Department of Engineering & Materials Science & Transportation, University of Seville, Sevilla, 41092, Spain
  • 4 Department of Organic Chemistry, IUNAN, UCO, Campus Universitario de Rabanales, Córdoba, 14014, Spain
  • 5 Laboratory of Nanotechnology on Surfaces, Instituto de Ciencia de Materiales de Sevilla (CSIC-USE), Sevilla, 41092, Spain
  • 6 Peoples Friendship University of Russia (RUDN University), Moscow, 117198, Russian Federation
Keywords
CoxSiyOz; Cobalt oxide; Electrocatalysis; Oxygen evolution reaction; Water splitting
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