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dc.contributor.author
Zlobinski, Mateusz
dc.contributor.author
Schuler, Tobias
dc.contributor.author
Büchi, Felix N.
dc.contributor.author
Schmidt, Thomas J.
dc.contributor.author
Boillat, Pierre
dc.date.accessioned
2021-02-12T15:21:26Z
dc.date.available
2021-01-31T17:54:47Z
dc.date.available
2021-02-12T15:21:26Z
dc.date.issued
2021-01
dc.identifier.issn
0013-4651
dc.identifier.issn
1945-7111
dc.identifier.other
10.1149/1945-7111/abcf19
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/466911
dc.identifier.doi
10.3929/ethz-b-000466911
dc.description.abstract
Developments of the porous transport layers (PTLs) in recent years resulted in significant performance improvements in polymer electrolyte water electrolyzers (PEWEs). One of the milestones of the material design was the integration of a microporous layer (MPL) on sintered titanium PTLs. Utilizing high-resolution neutron imaging, the water and gas distribution in the multi-layered porous transport media (ML-PTL) was probed at various current densities (up to 4 A cm−2) and pressure conditions up to 8 bar, using a series of four materials, differing in MPL morphology. The water and gas distribution measured is greatly affected by the presence of an MPL. While in the bulk of the PTL, the gas accumulation is increased in the presence of an MPL, in the MPL itself more water is retained. The finer the MPL structure, the higher the liquid saturation. It is observed that the two-phase flow in the MPL has minor influence on the performance of the cell even though the gas accumulation at the CL interface is greatly reduced. The improvements, therefore, appear to be related to the CL and MPL interaction on sub-micron scale and microstructure effect on catalyst area utilization.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
The Electrochemical Society
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Elucidation of Fluid Streamlining in Multi-Layered Porous Transport Layers for Polymer Electrolyte Water Electrolyzers by Operando Neutron Radiography
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2021-01-11
ethz.journal.title
Journal of the Electrochemical Society
ethz.journal.volume
168
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
J. Electrochem. Soc.
ethz.pages.start
014505
en_US
ethz.size
8 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
New York, NY
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02515 - Laboratorium für Physikalische Chemie / Laboratory of Physical Chemistry::03910 - Schmidt, Thomas J. / Schmidt, Thomas J.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02515 - Laboratorium für Physikalische Chemie / Laboratory of Physical Chemistry::03910 - Schmidt, Thomas J. / Schmidt, Thomas J.
en_US
ethz.date.deposited
2021-01-31T17:54:58Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-02-12T15:21:39Z
ethz.rosetta.lastUpdated
2021-02-16T00:01:19Z
ethz.rosetta.versionExported
true
ethz.COinS
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