Kramm, Ulrike I. ; Zana, Alessandro ; Vosch, Tom ; Fiechter, Sebastian ; Arenz, Matthias ; Schmeißer, Dieter (2015)
On the structural composition and stability of Fe–N–C catalysts prepared by an intermediate acid leaching.
In: Journal of Solid State Electrochemistry, 20
doi: 10.1007/s10008-015-3060-z
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The development of highly active and stable non-noble metal catalysts (NNMC) for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEM-FC) becomes of importance in order to enable cost reduction. In this work, we discuss the structural composition as derived from Fe-57 Mößbauer spectroscopy and X-ray diffraction, catalytic performance determined by a rotating (ring) disk electrode (RRDE) technique and stability evaluation of our Fe–N–C catalysts prepared by an intermediate acid leaching (IAL). The advantage of this IAL is given by a high density of active sites within the catalyst, as even without sulphur addition, an iron carbide formation and related disintegration of active sites are inhibited. In addition, our accelerated stress tests illustrate better stability of the sulphur-free IAL catalyst in comparison to the sulphur-added one.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Kramm, Ulrike I. ; Zana, Alessandro ; Vosch, Tom ; Fiechter, Sebastian ; Arenz, Matthias ; Schmeißer, Dieter |
| Art des Eintrags: | Bibliographie |
| Titel: | On the structural composition and stability of Fe–N–C catalysts prepared by an intermediate acid leaching |
| Sprache: | Englisch |
| Publikationsjahr: | 2015 |
| Verlag: | Springer-Verlag |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Solid State Electrochemistry |
| Jahrgang/Volume einer Zeitschrift: | 20 |
| DOI: | 10.1007/s10008-015-3060-z |
| Kurzbeschreibung (Abstract): | The development of highly active and stable non-noble metal catalysts (NNMC) for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEM-FC) becomes of importance in order to enable cost reduction. In this work, we discuss the structural composition as derived from Fe-57 Mößbauer spectroscopy and X-ray diffraction, catalytic performance determined by a rotating (ring) disk electrode (RRDE) technique and stability evaluation of our Fe–N–C catalysts prepared by an intermediate acid leaching (IAL). The advantage of this IAL is given by a high density of active sites within the catalyst, as even without sulphur addition, an iron carbide formation and related disintegration of active sites are inhibited. In addition, our accelerated stress tests illustrate better stability of the sulphur-free IAL catalyst in comparison to the sulphur-added one. |
| Freie Schlagworte: | Non-noble metal catalysts (NNMC,) Fe–N–C, ORR, PEM-FC, Accelerated stress tests (ASTs), Mößbauer spectroscopy |
| Zusätzliche Informationen: | Dedicated to Jose Zagal on the occasion of his 65th birthday |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie > Fachgruppe Katalysatoren und Elektrokatalysatoren 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie |
| Hinterlegungsdatum: | 01 Mär 2016 09:44 |
| Letzte Änderung: | 18 Aug 2021 08:28 |
| PPN: | |
| Sponsoren: | This work was supported by the European Fund for Regional Development (EFRE) at BTU Cottbus under the Project No. 1307513,, This work was supported by the German Research Foundation (DFG) within the initiative of the Graduate School of Excellence Energy Science and Engineering (ESE, GSC 1070) at TU Darmstadt and by the Danish Innovation Fund ("non-precious" project). |
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