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Mesoporous NiFe2O4 with Tunable Pore Morphology for Electrocatalytic Water Oxidation

Title data

Simon, Christopher ; Timm, Jana ; Tetzlaff, David ; Jungmann, Jonas ; Apfel, Ulf-Peter ; Marschall, Roland:
Mesoporous NiFe2O4 with Tunable Pore Morphology for Electrocatalytic Water Oxidation.
In: ChemElectroChem. Vol. 8 (2021) Issue 1 . - pp. 227-239.
ISSN 2196-0216
DOI: https://doi.org/10.1002/celc.202001280

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Abstract Mesoporous NiFe2O4 for electrocatalytic water splitting was prepared via soft-templating using citric-acid-complexed metal nitrates as precursors. The mesopore evolution during thermal treatment was examined systematically giving insights into the formation process of mesoporous NiFe2O4. Detailed nitrogen physisorption analysis including desorption scanning experiments reveal the presence of highly accessible mesopores generating surface areas of up to 200 m2/g. The ability of the NiFe2O4 powders to perform electrocatalytic oxygen evolution reaction under alkaline conditions was investigated, highlighting the advantages of mesopore insertion. The most active samples reach a current density of 10 mA cm−2 at an overpotential of 410 mV with a small Tafel slope of 50 mV dec−1, indicating an enhanced activity that originated from the increased catalyst surface.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Electrocatalysis; Oxygen evolution reaction; Mesoporous materials; Soft templating; Ferrite spinels
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry III
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry III > Chair Physical Chemistry III - Univ.-Prof. Dr. Roland Marschall
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 16 Feb 2021 08:52
Last Modified: 16 Feb 2021 08:52
URI: https://eref.uni-bayreuth.de/id/eprint/63080