Shahraei, Ali ; Martinaiou, Ioanna ; Creutz, Kim Alexander ; Kuebler, Markus ; Weidler, Natascha ; Ranecky, Simon Theophil ; Wallace, William David Zacharias ; Nowroozi, Mohammad Ali ; Clemens, Oliver ; Stark, Robert W. ; Kramm, Ulrike I. (2018)
Exploring Active Sites in Multi-heteroatom Doped Co-based Catalysts for Hydrogen Evolution Reaction.
In: Chemistry - A European Journal, 24 (48)
doi: 10.1002/chem.201802684
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Today, metal–N‐ as well as metal–S‐doped carbon materials are known to catalyze the hydrogen evolution reaction (HER). However, especially N‐ and S‐co‐doped catalysts reach highest activity, but it remains unclear if the activity is related to MNx or MSy (M=metal) sites. In this work we apply a simple method for multi‐heteroatom doping and investigate the effect of cobalt content on the HER in acidic medium. The CoNx and CoSy sites were evidenced on the basis of structural characterization by Raman, X‐ray induced photoelectron spectroscopy, and TEM. The presence of sulfur enables the formation of a larger number of CoNx sites. Structure–performance relationship proves that the HER activity is dominated by CoNx rather than CoSy sites. The most active catalysts also exhibit an excellent stability under galvanostatic conditions making them of interest for electrolyser application.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Shahraei, Ali ; Martinaiou, Ioanna ; Creutz, Kim Alexander ; Kuebler, Markus ; Weidler, Natascha ; Ranecky, Simon Theophil ; Wallace, William David Zacharias ; Nowroozi, Mohammad Ali ; Clemens, Oliver ; Stark, Robert W. ; Kramm, Ulrike I. |
| Art des Eintrags: | Bibliographie |
| Titel: | Exploring Active Sites in Multi-heteroatom Doped Co-based Catalysts for Hydrogen Evolution Reaction |
| Sprache: | Englisch |
| Publikationsjahr: | 27 August 2018 |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Chemistry - A European Journal |
| Jahrgang/Volume einer Zeitschrift: | 24 |
| (Heft-)Nummer: | 48 |
| DOI: | 10.1002/chem.201802684 |
| Kurzbeschreibung (Abstract): | Today, metal–N‐ as well as metal–S‐doped carbon materials are known to catalyze the hydrogen evolution reaction (HER). However, especially N‐ and S‐co‐doped catalysts reach highest activity, but it remains unclear if the activity is related to MNx or MSy (M=metal) sites. In this work we apply a simple method for multi‐heteroatom doping and investigate the effect of cobalt content on the HER in acidic medium. The CoNx and CoSy sites were evidenced on the basis of structural characterization by Raman, X‐ray induced photoelectron spectroscopy, and TEM. The presence of sulfur enables the formation of a larger number of CoNx sites. Structure–performance relationship proves that the HER activity is dominated by CoNx rather than CoSy sites. The most active catalysts also exhibit an excellent stability under galvanostatic conditions making them of interest for electrolyser application. |
| Freie Schlagworte: | Carbon, cobalt, energy conversion, heterogeneous catalysis, hydrogen evolution reaction, non-precious metal catalysts |
| 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 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialdesign durch Synthese 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physics of Surfaces 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie |
| Hinterlegungsdatum: | 16 Jul 2018 05:32 |
| Letzte Änderung: | 18 Aug 2021 07:41 |
| PPN: | |
| Sponsoren: | Financial support by the graduate school of excellence energy science and engineering (GSC1070) the BMBF young research group (03XP0092) and by the DFG project (KR 3980/4‐1) is acknowledged by U.I.K., A.S., I.M., N.W., M.K., and W.D.Z.W. |
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