Nafion‐Induced Reduction of Manganese and its Impact on the Electrocatalytic Properties of a Highly Active MnFeNi Oxide for Bifunctional Oxygen Conversion Full article
| Journal |
ChemElectroChem
ISSN: 2196-0216 |
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| Output data | Year: 2021, Volume: 8, Number: 15, Pages: 2979-2983 Pages count : 5 DOI: 10.1002/celc.202100744 | ||||||
| Tags | bifunctional oxygen electrodes; Nafion; oxidation state; transition metals; X-ray absorption spectroscopy | ||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0010 |
| 2 | European Commission | 804092 H2020-EU.1.1. ME4OER |
Abstract:
Electrocatalysts for bifunctional oxygen reduction (ORR) and oxygen evolution reactions (OER) are commonly studied under hydrodynamic conditions, rendering the use of binders necessary to ensure the mechanical stability of the electrode films. The presence of a binder, however, may influence the properties of the materials under examination to an unknown extent. Herein, we investigate the impact of Nafion on a highly active ORR/OER catalyst consisting of MnFeNi oxide nanoparticles supported on multi-walled carbon nanotubes. Electrochemical studies revealed that, in addition to enhancing the mechanical stability and particle connectivity, Nafion poses a major impact on the ORR selectivity, which correlates with a decrease in the valence state of Mn according to X-ray absorption spectroscopy. These findings call for awareness regarding the use of electrode additives, since in some cases the extent of their impact on the properties of electrode films cannot be regarded as negligible.
Cite:
Morales D.M.
, Villalobos J.
, Kazakova M.A.
, Xiao J.
, Risch M.
Nafion‐Induced Reduction of Manganese and its Impact on the Electrocatalytic Properties of a Highly Active MnFeNi Oxide for Bifunctional Oxygen Conversion
ChemElectroChem. 2021. V.8. N15. P.2979-2983. DOI: 10.1002/celc.202100744 WOS Scopus РИНЦ AN PMID OpenAlex
Nafion‐Induced Reduction of Manganese and its Impact on the Electrocatalytic Properties of a Highly Active MnFeNi Oxide for Bifunctional Oxygen Conversion
ChemElectroChem. 2021. V.8. N15. P.2979-2983. DOI: 10.1002/celc.202100744 WOS Scopus РИНЦ AN PMID OpenAlex
Dates:
| Submitted: | May 31, 2021 |
| Accepted: | Jul 21, 2021 |
| Published online: | Jul 28, 2021 |
| Published print: | Aug 2, 2021 |
Identifiers:
| Web of science: | WOS:000690906100029 |
| Scopus: | 2-s2.0-85113720217 |
| Elibrary: | 47001931 |
| Chemical Abstracts: | 2021:1954879 |
| PMID: | 34595088 |
| OpenAlex: | W3186009033 |