Electrolyte Effects on the Stability of Ni-Mo Cathodes for the Hydrogen Evolution Reaction.
electrocatalysis
electrodes
electrolytes
solar fuels
water splitting
Journal
ChemSusChem
ISSN: 1864-564X
Titre abrégé: ChemSusChem
Pays: Germany
ID NLM: 101319536
Informations de publication
Date de publication:
08 Aug 2019
08 Aug 2019
Historique:
received:
03
03
2019
revised:
16
05
2019
pubmed:
17
5
2019
medline:
17
5
2019
entrez:
17
5
2019
Statut:
ppublish
Résumé
Water electrolysis to form hydrogen as a solar fuel requires highly effective catalysts. In this work, theoretical and experimental studies are performed on the activity and stability of Ni-Mo cathodes for this reaction. Density functional theory studies show various Ni-Mo facets to be active for the hydrogen evolution reaction, Ni segregation to be thermodynamically favorable, and Mo vacancy formation to be favorable even without an applied potential. Electrolyte effects on the long-term stability of Ni-Mo cathodes are determined. Ni-Mo is compared before and after up to 100 h of continuous operation. It is shown that Ni-Mo is unstable in alkaline media, owing to Mo leaching in the form of MoO
Identifiants
pubmed: 31095900
doi: 10.1002/cssc.201900617
pmc: PMC6773243
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
3491-3500Subventions
Organisme : Nederlandse Organisatie voor Wetenschappelijk Onderzoek
ID : Gravitation Program MCEC
Organisme : Nederlandse Organisatie voor Wetenschappelijk Onderzoek
ID : Solar Fuels Graduate Program
Organisme : Villum Fonden
ID : 9455
Informations de copyright
© 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.
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