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@INPROCEEDINGS{Frhlich:1048575,
author = {Fröhlich, Kristina and Liu, Jialiang and Hilche, Tobias
and Bartoli, Francesco and Karl, André and Jodat, Eva and
Eichel, Rüdiger-A.},
title = {{A}node catalyst layer composition for {PEM}
{E}lectrolysis: {A}n in-depth electrochemical analysis},
reportid = {FZJ-2025-04715},
year = {2025},
abstract = {Proton exchange membrane (PEM) water electrolysis is a
technology for large-scale hydrogen production.[1,2] The
oxygen evolution reaction (OER) at the membrane electrode
assembly (MEA) is the rate determining step dominating the
overall cell performance. The choice of the OER catalyst and
deposition procedure significantly affect the reaction
kinetics, chemical stability and electronic conductivity.[3]
To maintain a high and long-term consistent cell
performance, manufacturing and performance control of the
MEA is indispensable.Electrochemical analysis is a powerful
tool for MEA evaluation providing information about
catalytic activity, kinetics and electrochemically active
surface area (ECSA). In addition, scanning electrochemical
microscopy and eddy current measurements give insights into
the micro- and macroscopic homogeneity of catalyst layers
and MEAs.[4,5]In this study, we clarify the significance of
electronic conductivity focusing on Ir-based anodes of
customized MEAs. The effect of catalyst material and loading
on the in-plane MEA resistance, OER performance and ECSA was
investigated.Funding: This work was financially supported by
the Bundesministerium für Bildung und Forschung (BMBF):
Wasserstoff - Leitprojekt H2Giga, Teilvorhaben DERIEL
(project number 03HY122C), SEGIWA (project number
03HY121B).[1] A. S. Aricò et al (2013) Appl. Electrochem.
43 107, DOI 10.1007/s10800-012-0490-5[2] T. Wang et al
(2022) Carbon Neutr. 1 21, DOI 0.1007/s43979-022-00022-8[3]
S. Mo et al (2023) Electrochem. Energy Rev. 6 28, DOI
0.1007/s41918-023-00190-w[4] D. Polcari et al (2016) Chem.
Rev. 116 13234, DOI 10.1021/acs.chemrev.6b00067[5] G.
Belkacem et al (2024) 24 1629, DOI 10.3390/s24051629},
month = {Jul},
date = {2025-07-23},
organization = {INTERNATIONAL SCHOOL OF
ELECTROCATALYSIS 2025 - ISECAT, Padova
(Italy), 23 Jul 2025 - 25 Jul 2025},
subtyp = {After Call},
cin = {IET-1},
cid = {I:(DE-Juel1)IET-1-20110218},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123)},
pid = {G:(DE-HGF)POF4-1231},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/1048575},
}