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Improved electrodes and gas impurity investigations on alkaline electrolysers

Reissner, R. and Schiller, Günter and Knöri, Torsten and Doyen, Wim and Alvarez-Gallego, Yolanda and Vaes, J. and Bentzen, J. J. and Jorgensen, P. S. and Bowen, J.R. (2016) Improved electrodes and gas impurity investigations on alkaline electrolysers. In: WHEC 2016 Conference Proceedings. 21st World Hydrogen Energy Conference (WHEC), 13.-16. Juni 2016, Zaragoza, Spanien.

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Abstract

Electrodes with Raney-nickel-alloy coatings (low cost material) → overpotential reduction of 330 mV • Electrodes show excellent stability: 1100 on-off cycles, 98% of initial efficiency retained • Hydrogen in oxygen impurity reduced by > factor of 4 due to e-bypass-separator (double layer separator) • Cell can be operated at higher pressure and/or lower current density before reaching the limiting gas concentration • Gas impurity in an electrolyser depends on many more factors than only which type of separator is used • For further improvement of electrolysers study of internal problems using current density distribution measurements has been started

Item URL in elib:https://elib.dlr.de/104852/
Document Type:Conference or Workshop Item (Poster)
Title:Improved electrodes and gas impurity investigations on alkaline electrolysers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Reissner, R.regine.reissner (at) dlr.deUNSPECIFIED
Schiller, Günterguenter.schiller (at) dlr.deUNSPECIFIED
Knöri, Torstentorsten.knoeri (at) dlr.deUNSPECIFIED
Doyen, WimVITOUNSPECIFIED
Alvarez-Gallego, YolandaVITOUNSPECIFIED
Vaes, J.Hydrogenics EuropeUNSPECIFIED
Bentzen, J. J.DTUUNSPECIFIED
Jorgensen, P. S.DTUUNSPECIFIED
Bowen, J.R.DTUUNSPECIFIED
Date:13 June 2016
Journal or Publication Title:WHEC 2016 Conference Proceedings
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Spanish Hydrogen Association Technical Secretariat, S.UNSPECIFIED
Status:Published
Keywords:Elektrolyse, Wasserstofferzeugung, Elektroden
Event Title:21st World Hydrogen Energy Conference (WHEC)
Event Location:Zaragoza, Spanien
Event Type:international Conference
Event Dates:13.-16. Juni 2016
Organizer:Asociacon Espanol de Hidrogeno
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Electrolysis and Hydrogen
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Electrolysis) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Reißner, Regine
Deposited On:06 Jul 2016 08:43
Last Modified:31 Jul 2019 20:02

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