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Mechanochemical Synthesis as a Greener Way to Produce Iron‐based Oxygen Reduction Catalysts

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00006144
URN to cite this document: urn:nbn:de:bvb:703-epub-6144-2

Title data

Gernhard, Marius ; Rautenberg, M. ; Hörner, Gerald ; Weber, Birgit ; Emmerling, Franziska ; Roth, Christina:
Mechanochemical Synthesis as a Greener Way to Produce Iron‐based Oxygen Reduction Catalysts.
In: Zeitschrift für anorganische und allgemeine Chemie. Vol. 647 (2021) Issue 22 . - pp. 2080-2087.
ISSN 1521-3749
DOI der Verlagsversion: https://doi.org/10.1002/ZAAC.202100194

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Abstract

Iron-based catalysts have been reported manifold and studied as platinum group metal (PGM) free alternatives for the catalysis of the oxygen reduction reaction (ORR). However, their sustainable preparation by greener synthesis approaches is usually not discussed. In this work, we propose a new method for the sustainable preparation of such catalysts by using a mechanochemical approach, with no solvents and non-toxic chemicals. The materials obtained from low temperature carbonization (700 °C) exhibit considerable and stable catalytic performance for ORR in alkaline medium. A catalyst obtained from iron hydroxide, tryptophan, dicyandiamide, and ammonium nitrate shows the best electrocatalytic performance with an overpotential of 921 mV vs. RHE at 0.1 mA/cm2 and an electron transfer number of 3.4.

Further data

Item Type: Article in a journal
Additional notes (visible to public): Dedicated to Professor Josef Breu on the occasion of his 60th birthday
Keywords: PGM-free catalyst; Oxygen Reduction Reaction; AEMFC; Mössbauer Spectroscopy; Sustainable Synthesis
DDC Subjects: 500 Science > 540 Chemistry
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV > Chair Inorganic Chemistry IV - Univ.-Prof. Dr. Birgit Weber
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-6144-2
Date Deposited: 19 Apr 2022 10:04
Last Modified: 19 Apr 2022 10:04
URI: https://epub.uni-bayreuth.de/id/eprint/6144

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