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A Cu2Se-Cu2O film electrodeposited on titanium foil as a highly active and stable electrocatalyst for the oxygen evolution reaction
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2018 (English)In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 54, no 39, p. 4979-4982Article in journal (Refereed) Published
Abstract [en]

Many nonprecious metal-selenide-based materials have been reported as electrocatalysts with high activity for the oxygen evolution reaction (OER). Herein, a hybrid catalyst film composed of Cu2Se and Cu2O nanoparticles directly grown on Ti foil (Cu2Se-Cu2O/TF) was prepared through a simple and fast cathodic electrodeposition method. Surprisingly, this electrode required a relatively low overpotential of 465 mV to achieve a catalytic current density of 10 mA cm-2 for the OER in 0.2 M carbonate buffer (pH = 11.0). Furthermore, a long-term constant current electrolysis test confirmed the high durability of the Cu2Se-Cu2O/TF anode at a current density of 10 mA cm-2 over 20 h. The XRD, TEM and XPS analysis of the sample after the OER indicated that a CuO protective layer formed on the surface of the Cu2Se-Cu2O catalyst, which effectively suppressed further oxidation of the Cu2Se-Cu2O catalyst during the OER and resulted in sustained catalytic oxidation of water.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2018. Vol. 54, no 39, p. 4979-4982
Keywords [en]
buffer, carbonic acid, copper oxide, copper selenide, organoselenium derivative, oxygen, titanium, unclassified drug, water, Article, catalyst, chemical reaction, electrolysis, oxidation, pH, surface property, transmission electron microscopy, X ray diffraction, X ray photoemission spectroscopy
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URN: urn:nbn:se:kth:diva-236423DOI: 10.1039/c8cc02021cISI: 000435872900019Scopus ID: 2-s2.0-85046835064OAI: oai:DiVA.org:kth-236423DiVA, id: diva2:1258887
Funder
Swedish Energy AgencySwedish Research Council
Note

QC 20181026

Available from: 2018-10-26 Created: 2018-10-26 Last updated: 2018-10-26Bibliographically approved

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Sun, Licheng

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