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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Enhanced water electrolysis: Electrocatalytic generation of oxygen gas at manganese oxide nanorods modified electrodes
Electrochemistry Communications, Volume 9, No. 8, Year 2007
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Description
This study is concerned with the electrocatalytic evolution of oxygen gas at manganese oxide nanorods modified Pt, Au and GC electrodes in 0.5 M KOH solution. The electrochemical measurements revealed a significant enhancement of the electrocatalytic activity of the Pt, Au and GC electrodes towards the oxygen evolution reaction (OER) upon the electrodeposition of manganese oxide nanoparticles (nano-MnOx), that is, the onset potentials of the OER at the modified Pt, Au and GC electrodes are more negative by about 300, 550 and 300 mV, respectively, compared with the bare (i.e., unmodified) electrodes. MnOx is electrodeposited in a porous nano-texture structure which covers the entire surface of the substrates homogeneously. The MnOx of a single crystalline manganite phase (γ-MnOOH) plays a vital role as a catalytic mediator, which facilitates the charge transfer during the water oxidation into molecular oxygen and thus the OER is accomplished at less positive potentials. © 2007 Elsevier B.V. All rights reserved.
Authors & Co-Authors
El-Deab, Mohamed S.
Japan, Tokyo
Tokyo Institute of Technology
Awad, Mohamed Ismail
Japan, Tokyo
Tokyo Institute of Technology
Mohammad, Ahmad M.
Japan, Tokyo
Tokyo Institute of Technology
Ohsaka, Takeo
Japan, Tokyo
Tokyo Institute of Technology
Statistics
Citations: 148
Authors: 4
Affiliations: 1
Identifiers
Doi:
10.1016/j.elecom.2007.06.011
ISSN:
13882481
Research Areas
Environmental