Chromium substituted iron oxide nanowires as affordable electrocatalysts for oxygen evolution reaction

Chromium substituted iron oxide nanowires as affordable electrocatalysts for oxygen evolution reaction

Earth-abundant metal oxides have become center of attention in the application of electrochemical energy conversion and storage. In this work, CrFeO 3 was synthesized as a new catalyst for oxygen evolution reaction (OER). The structural and chemical properties of CrFeO 3 were characterized by TEM, S...

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Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology Vol. 21; no. 7; pp. 1 - 10
Main Authors: Kocabas, Serra, Cetin, Asude, Önal, Ahmet M., Esenturk, Emren Nalbant
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01-07-2019
Springer Nature B.V
Subjects:
Catalysis
Catalysts
Characterization and Evaluation of Materials
Chemical properties
Chemical synthesis
Chemistry and Materials Science
Chromium
Electrocatalysts
Electrochemistry
Energy conversion
Energy storage
Fluorination
Inorganic Chemistry
Iron oxides
Lasers
Materials Science
Morphology
Nanoparticles
Nanotechnology
Nanowires
Optical Devices
Optics
Organic chemistry
Oxides
Oxygen
Oxygen evolution reactions
Photonics
Physical Chemistry
Research Paper
Tin
Tin oxide
Tin oxides
X ray photoelectron spectroscopy
Nanostructured catalysts
Nanowire
Water oxidation reaction
Oxygen evolution reaction
Chromium iron oxide
Nanoparticle assembly
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Summary:Earth-abundant metal oxides have become center of attention in the application of electrochemical energy conversion and storage. In this work, CrFeO 3 was synthesized as a new catalyst for oxygen evolution reaction (OER). The structural and chemical properties of CrFeO 3 were characterized by TEM, SEM, EDX, XRD, XPS, and BET analyses. The microscopy images reveal that CrFeO 3 have wire-like morphology, which was formed by assembly of ca. 14 nm nanocrystallites. Then, potential utility of the synthesized nanowires (NWs) as catalysts in OER has been investigated. The CrFeO 3 NW-modified fluorinated tin oxide (FTO) electrodes exhibited promising OER performance with an onset potential of 1.63 V vs RHE, overpotential of 737 mV at 10 mA cm −2 current density, and Tafel slope of 57 mV dec −1 . Additionally, CrFeO 3 NWs are demonstrated to be very stable electrocatalyst during OER. The CrFeO 3 NWs present an overall electrocatalytic performance that is comparable to the one of RuO 2 , and promise a great potential as an effective and affordable OER catalyst.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-019-4591-5