Release Time:2019-03-13  Hits:

Indexed by: Journal Article

Date of Publication: 2016-09-07

Journal: CHEMCATCHEM

Included Journals: Scopus、EI、SCIE

Volume: 8

Issue: 17

Page Number: 2757-2760

ISSN: 1867-3880

Key Words: catalyst films; cobalt; electrodeposition; oxidation; water splitting

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 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).