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Selective optimisation of catalytic activity by tuning the structural composition in nanoparticulate CuFe₂O₄

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00008134
URN to cite this document: urn:nbn:de:bvb:703-epub-8134-7

Title data

Zander, Judith ; Fink, Michael F. ; Attia, Mina ; Roth, Christina ; Marschall, Roland:
Selective optimisation of catalytic activity by tuning the structural composition in nanoparticulate CuFe₂O₄.
In: Sustainable Energy & Fuels. Vol. 8 (2024) Issue 20 . - pp. 4848-4863.
ISSN 2398-4902
DOI der Verlagsversion: https://doi.org/10.1039/D4SE00968A

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Project information

Project financing: Andere
Bavarian Center for Battery Technology

Abstract

The tailored development of highly active and selective electrocatalysts based on abundant and non-toxic elements will be key to the rigorous implementation of sustainable processes in industry. In this context, spinel-type CuFe2O4 is regarded as a promising candidate. We synthesised CuFe2O4 nanoparticles with various Cu : Fe ratios via a microwave-assisted solvothermal route. The compositional effect on the material properties and performance in multiple electrochemical reactions, including HER, OER, ORR and CO2RR, is investigated, in order to obtain valuable insights about those parameters that drive the improvement of catalytic activities. An increase in lattice strain and surface area is observed for compositions deviating from the ideal 1 : 2 stoichiometry, which goes in hand with an improved performance in alkaline water splitting. For the CO2RR on the other hand, the Cu-content is determined to be the most important factor, with a Cu-excess being highly beneficial. The suitability of CuFe2O4 as a bifunctional water splitting catalyst was demonstrated by full cell measurements using the spinel catalyst at both the anode and cathode side at the same time. Moreover, we showed the applicability of CuFe2O4 in bifunctional gas-diffusion electrodes for rechargeable Zn–air batteries.

Further data

Item Type: Article in a journal
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry III - Sustainable Materials for Solar Energy Conversion > Chair Physical Chemistry III - Sustainable Materials for Solar Energy Conversion - Univ.-Prof. Dr. Roland Marschall
Faculties > Faculty of Engineering Science > Chair Electrochemical Process Engineering > Chair Electrochemical Process Engineering - Univ.-Prof. Dr.-Ing. Christina Roth
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 Physical Chemistry III - Sustainable Materials for Solar Energy Conversion
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Electrochemical Process Engineering
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-8134-7
Date Deposited: 16 Jan 2025 08:02
Last Modified: 06 Feb 2025 13:11
URI: https://epub.uni-bayreuth.de/id/eprint/8134

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