Co3 O4 Nanowire Arrays toward Superior Water Oxidation Electrocatalysis in Alkaline Media by Surface Amorphization.
Chemistry
; 23(62): 15601-15606, 2017 Nov 07.
Article
em En
| MEDLINE
| ID: mdl-28925516
ABSTRACT
It is highly desirable to develop a simple, fast and straightforward method to boost the alkaline water oxidation of metal oxide catalysts. In this communication, we report our recent finding that the generation of amorphous Co-borate layer on Co3 O4 nanowire arrays supported on Ti mesh (Co3 O4 @Co-Bi NA/TM) leads to significantly boosted OER activity. The as-prepared Co3 O4 @Co-Bi NA/TM demands overpotential of 304 mV to drive a geometrical current density of 20 mA cm-2 in 1.0 M KOH, which is 109 mV less than that for Co3 O4 NA/TM, with its catalytic activity being preserved for at least 20 h. It suggests that the existence of amorphous Co-Bi layer promotes more CoOx (OH)y generation on Co3 O4 surface.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Chemistry
Assunto da revista:
QUIMICA
Ano de publicação:
2017
Tipo de documento:
Article