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@ARTICLE{Liu:858451,
author = {Liu, Chang and Carmo, Marcelo and Bender, Guido and
Everwand, Andreas and Lickert, Thomas and Young, James L.
and Smolinka, Tom and Stolten, Detlef and Lehnert, Werner},
title = {{P}erformance enhancement of {PEM} electrolyzers through
iridium-coated titanium porous transport layers},
journal = {Electrochemistry communications},
volume = {97},
issn = {1388-2481},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2018-07329},
pages = {96 - 99},
year = {2018},
abstract = {Titanium-based porous transport layers (PTL) used in
polymer electrolyte membrane (PEM) water electrolyzers
suffer from surface passivation (titanium oxidation), which
increases the interface resistance between the PTL and
electrode. For long-term operation, PTLs are typically
coated with considerable amounts of platinum or gold to
ensure reasonable performance profiles over time. Moreover,
it is well known that the oxide forms of platinum and gold
are not stable under electrolysis conditions. In this study,
an easy and scalable method is introduced to protect the
titanium PTL from passivation by sputtering very thin layers
of iridium onto commercially-available titanium PTLs. The
iridium layer reduces the overall ohmic resistance of the
PTL/catalyst layer interface and improves the cell's
performance to that achieved with carbon-based PTLs. The
coating process homogeneously deposited iridium throughout
the inner structure of the PTL. The findings of this study
may lead to the use of iridium as a protective layer for
titanium PTLs, potentially enable operation at increased
cell voltages and lead to increased electrolyzer
durability.},
cin = {IEK-3},
ddc = {540},
cid = {I:(DE-Juel1)IEK-3-20101013},
pnm = {134 - Electrolysis and Hydrogen (POF3-134)},
pid = {G:(DE-HGF)POF3-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000451326800021},
doi = {10.1016/j.elecom.2018.10.021},
url = {https://juser.fz-juelich.de/record/858451},
}