title: Green cobalt oxide (CoOx) film with nanoribbon structures electrodeposited from the BF₂-annulated cobaloxime precursor for efficient water oxidation.
abstract: In this study, we report for the first time on the use of a water-soluble BF2-annulated cobaloxime, Co(dmgBF2)2(OH2)2 (Co-DMB, dmgBF2 = difluoroboryl-dimethylglyoxime), as a catalyst precursor for electrocatalytic water oxidation. Oxygen gas bubbles were clearly produced on the FTO electrode at a low overpotential under neutral pH conditions containing Co-DMB. Interestingly, stable green films were produced under these conditions. The current densities can reach to >5 mA/cm(2) at 1.1 V and >10 mA/cm(2) at 1.5 V (vs Ag/AgCl). The morphologies of the films showed nanoribbon structures, which were characterized by scanning electron microscope (SEM), energy-dispersive X-ray analysis (EDX), and X-ray photoelectron spectroscopy (XPS).
authors.affiliation: Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China , Hefei, China 230026.
authors.forename: Ali
authors.initials: A
authors.lastname: Han
authors.forename: Haotian
authors.initials: H
authors.lastname: Wu
authors.forename: Zijun
authors.initials: Z
authors.lastname: Sun
authors.forename: Hongxing
authors.initials: H
authors.lastname: Jia
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Yan
authors.forename: Hao
authors.initials: H
authors.lastname: Ma
authors.forename: Xiang
authors.initials: X
authors.lastname: Liu
authors.forename: Pingwu
authors.initials: P
authors.lastname: Du