A Cobalt-Based Film for Highly Efficient Electrocatalytic Water Oxidation in Neutral Aqueous Solution
2016 (English)In: ChemCatChem, ISSN 1867-3880, E-ISSN 1867-3899, Vol. 8, no 17, 2757-2760 p.Article in journal (Refereed) Published
A cobalt-based film (Co-Hi) for water oxidation was prepared in 2-[4-(2-hydroxyethyl) piperazin-1-yl]ethanesulfonic acid buffer at pH 7.0 through a unique cyclic voltammetry electrodeposition method by applying a wide scan range from 1.40 to -1.00 V versus normal hydrogen electrode (NHE). This catalyst film displayed highly efficient activity during oxygen evolution in neutral aqueous solution. An impressive current density of more than 1.5 mAcm(-2) that was stable over a prolonged time period was obtained with a remarkably low onset overpotential of 230 mV in 0.1 M phosphate buffer (pH 7.0).
Place, publisher, year, edition, pages
Wiley-Blackwell, 2016. Vol. 8, no 17, 2757-2760 p.
catalyst films, cobalt, electrodeposition, oxidation, water splitting
IdentifiersURN: urn:nbn:se:kth:diva-196995DOI: 10.1002/cctc.201600617ISI: 000386917800004ScopusID: 2-s2.0-84985905384OAI: oai:DiVA.org:kth-196995DiVA: diva2:1055865
QC 201612132016-12-132016-11-282016-12-13Bibliographically approved