Design Rules for Oxygen Evolution Catalysis at Porous Iron Oxide Electrodes: A 1000-Fold Current Density Increase
Haschke S, Pankin D, Petrov Y, Bochmann S, Manshina A, Bachmann J (2017)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2017
Journal
Publisher: WILEY-V C H VERLAG GMBH
Book Volume: 10
Pages Range: 3644-3651
Journal Issue: 18
Abstract
Nanotubular iron(III) oxide electrodes are optimized for catalytic efficiency in the water oxidation reaction at neutral pH. The nanostructured electrodes are prepared from anodic alumina templates, which are coated with Fe2O3 by atomic layer deposition. Scanning helium ion microscopy, X-ray diffraction, and Raman spectroscopy are used to characterize the morphologies and phases of samples submitted to various treatments. These methods demonstrate the contrasting effects of thermal annealing and electrochemical treatment. The electrochemical performances of the corresponding electrodes under dark conditions are quantified by steady-state electrolysis and electrochemical impedance spectroscopy. A rough and amorphous Fe2O3 with phosphate incorporation is critical for the optimization of the water oxidation reaction. For the ideal pore length of 17 mu m, the maximum catalytic turnover is reached with an effective current density of 140 mu Acm(-2) at an applied overpotential of 0.49V.
Authors with CRIS profile
Sandra Haschke
Lehrstuhl für Chemistry of thin film materials
Sebastian Bochmann
Lehrstuhl für Chemistry of thin film materials
Julien Bachmann
Lehrstuhl für Chemistry of thin film materials
Involved external institutions
Russian Federation (RU)How to cite
APA:
Haschke, S., Pankin, D., Petrov, Y., Bochmann, S., Manshina, A., & Bachmann, J. (2017). Design Rules for Oxygen Evolution Catalysis at Porous Iron Oxide Electrodes: A 1000-Fold Current Density Increase. Chemsuschem, 10(18), 3644-3651. https://doi.org/10.1002/cssc.201701068
MLA:
Haschke, Sandra, et al. "Design Rules for Oxygen Evolution Catalysis at Porous Iron Oxide Electrodes: A 1000-Fold Current Density Increase." Chemsuschem 10.18 (2017): 3644-3651.
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