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@ARTICLE{Reshetenko:897481,
author = {Reshetenko, Tatyana and Kulikovsky, Andrei},
title = {{U}nderstanding the distribution of relaxation times of a
low–{P}t {PEM} fuel cell},
journal = {Electrochimica acta},
volume = {391},
issn = {0013-4686},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2021-03814},
pages = {138954 -},
year = {2021},
abstract = {Distribution of relaxation times (DRT) is calculated from
fifty local impedance spectra of a low–Pt PEM fuel cell.
48 out of 50 DRT spectra contain three peaks. Evolution of
the peak frequency positions and resistivities with the cell
current density are analyzed. The analysis allows us to
attribute the low–frequency peak to oxygen transport in
the gas–diffusion layer (perhaps, including transport in
the channel), the middle peak to unresolved processes of
charge–transfer and oxygen transport in the ionomer film,
and the high-frequency peak to oxygen transport in void
pores of the catalyst layer. Comparison of DRT spectra of
low–Pt and high–Pt cells suggests a method for measuring
ionomer film transport resistivity in a low–Pt cell.},
cin = {IEK-13},
ddc = {540},
cid = {I:(DE-Juel1)IEK-13-20190226},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123)},
pid = {G:(DE-HGF)POF4-1231},
typ = {PUB:(DE-HGF)16},
doi = {10.1016/j.electacta.2021.138954},
url = {https://juser.fz-juelich.de/record/897481},
}