Effect of iron addition to the electrolyte on alkaline water electrolysis performance.

Applied sciences Electrochemistry

Journal

iScience
ISSN: 2589-0042
Titre abrégé: iScience
Pays: United States
ID NLM: 101724038

Informations de publication

Date de publication:
19 Jan 2024
Historique:
received: 05 09 2023
revised: 27 11 2023
accepted: 06 12 2023
medline: 11 1 2024
pubmed: 11 1 2024
entrez: 11 1 2024
Statut: epublish

Résumé

Improvement of alkaline water electrolysis is a key enabler for quickly scaling up green hydrogen production. Fe is omnipresent within most industrial alkaline water electrolyzers and its effect on electrolyzer performance needs to be assessed. We conducted three-electrode and flow cell experiments with electrolyte Fe and Ni electrodes. Three-electrode cell experiments show that Fe ([Fe] = 6-357 μM; ICP-OES) promotes HER and OER by lowering both overpotentials by at least 100 mV at high current densities (T = 35°C-91°C). The overpotential of a zero-gap flow cell was decreased by 200 mV when increasing the Fe concentration ([Fe] = 13-549 μM, T = 21°C-75°C). HER benefits from the formation of Fe dendrite layers (SEM/EDX, XPS), which prevent NiH

Identifiants

DOI: 10.1016/j.isci.2023.108695 PMID: 38205262 PMC: PMC10777114
pubmed: 38205262
doi: 10.1016/j.isci.2023.108695
pii: S2589-0042(23)02772-4
pmc: PMC10777114
doi:

Types de publication

Journal Article

Langues

eng

Pagination

108695

Informations de copyright

© 2023 The Authors.

Déclaration de conflit d'intérêts

The authors declare no competing interests. We support inclusive, diverse, and equitable conduct of research.

Auteurs

Maximilian Demnitz (M)

Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands.
Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands.

Yuran Martins Lamas (YM)

Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands.
Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands.

Rodrigo Lira Garcia Barros (RL)

Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands.
Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands.

Anouk de Leeuw den Bouter (A)

Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands.
Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands.

John van der Schaaf (J)

Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands.
Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands.

Matheus Theodorus de Groot (M)

Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands.
Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands.

Classifications MeSH