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@ARTICLE{Reshetenko:873874,
author = {Reshetenko, Tatyana and Kulikovsky, Andrei},
title = {{O}n the {O}rigin of {H}igh {F}requency {I}mpedance
{F}eature in a {PEM} {F}uel {C}ell},
journal = {Journal of the Electrochemical Society},
volume = {166},
number = {15},
issn = {1945-7111},
address = {Pennington, NJ},
publisher = {Electrochemical Soc.},
reportid = {FZJ-2020-01066},
pages = {F1253 - F1257},
year = {2019},
abstract = {Measured impedance spectra of a low–Pt PEM fuel cell
exhibit high slope in the high–frequency range. To explain
this feature, we introduce an "external" capacitance Cext
connected in parallel to our recent model for the cathode
catalyst layer impedance. This capacitance greatly improves
the quality of spectra fitting in the high–frequency
domain. We argue that the external capacitance forms due to
electric double layer at the carbon/Nafion and carbon/water
interface. This interface does not participate in the oxygen
reduction and hence it shows up as a capacitance connected
in parallel to the catalyst layer impedance. Incorporation
of Cext into the model leads to lower values of CCL proton
conductivity, than those reported in our previous works.},
cin = {IEK-14 / IEK-3},
ddc = {660},
cid = {I:(DE-Juel1)IEK-14-20191129 / I:(DE-Juel1)IEK-3-20101013},
pnm = {135 - Fuel Cells (POF3-135)},
pid = {G:(DE-HGF)POF3-135},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000499629500002},
doi = {10.1149/2.1201915jes},
url = {https://juser.fz-juelich.de/record/873874},
}