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@ARTICLE{Kulikovsky:903866,
author = {Kulikovsky, Andrei},
title = {{A}nalytical {I}mpedance of {O}xygen {T}ransport in the
{C}hannel and {G}as {D}iffusion {L}ayer of a {PEM} {F}uel
{C}ell},
journal = {Journal of the Electrochemical Society},
volume = {168},
number = {11},
issn = {0013-4651},
address = {Bristol},
publisher = {IOP Publishing},
reportid = {FZJ-2021-05499},
pages = {114520 -},
year = {2021},
abstract = {Analytical model for impedance of oxygen transport in the
gas–diffusion layer (GDL) and cathode channel of a PEM
fuel cell is developed. The model is based on transient
oxygen mass conservation equations coupled to the proton
current conservation equation in the catalyst layer.
Analytical formula for the "GDL+channel" impedance is
derived assuming fast oxygen and proton transport in the
cathode catalyst layer (CCL) In the Nyquist plot, the
transport impedance consists of two arcs describing oxygen
transport in the air channel (low–frequency arc) and in
the GDL. The characteristic frequency of GDL arc depends on
the CCL thickness: large CCL thickness strongly lowers this
frequency. At small CCL thickness, the high–frequency
feature on the arc shape forms. This effect is important for
identification of peaks in distribution of relaxation times
spectra of low–Pt PEMFCs},
cin = {IEK-13},
ddc = {660},
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},
UT = {WOS:000723861000001},
doi = {10.1149/1945-7111/ac3a2d},
url = {https://juser.fz-juelich.de/record/903866},
}