A Cobalt‐Based Film for Highly Efficient Electrocatalytic Water Oxidation in Neutral Aqueous Solution. Issue 17 (11th August 2016)

• Record Type: Journal Article
• Authors: Chen, Hu; Gao, Yan; Sun, Licheng
• Is Part Of: ChemCatChem. Volume 8:Issue 17(2016)
• Page Start: 2757
• Page End: 2760
• Publication Date: 2016-08-11
• Subjects: catalyst films -- cobalt -- electrodeposition -- oxidation -- water splitting; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201600617
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: 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 mA cm −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). Abstract : Finding a Co‐op : A cobalt‐based film (Co‐Hi) displays an impressive water oxidation catalytic current density (>1.5 mA cm −2 ) that is stable over a prolonged time period and a remarkably low onset overpotential (230 mV) in 0.1 m phosphate buffer (pH 7.0).