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@ARTICLE{Kulikovsky:838292,
author = {Kulikovsky, Andrei},
title = {{A} {M}odel for {I}mpedance of a {PEM} {F}uel {C}ell
{C}athode with {P}oor {E}lectron {C}onductivity},
journal = {Journal of electroanalytical chemistry},
volume = {801},
issn = {1572-6657},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2017-06935},
pages = {122 - 128},
year = {2017},
abstract = {A model for impedance of the cathode catalyst layer (CCL)
with poor electronic conductivity σe is developed. In the
case of small cell current, an analytical expression for the
CCL impedance is derived. At small currents, finite σe
increases the static cell resistivity by the value 1/(3σe).
In addition, the CCL exhibits a pure ohmic resistivity,
which is equivalent to proton and electronic resistivities
connected in parallel. Finite σe distorts the shape of the
Nyquist spectrum in the HF domain; the CCL proton
conductivity σp can no longer be determined simply as a
projection of the straight HF line onto the real axis.
However, σp and σe can be found by fitting the model
equations to the experimental spectra},
cin = {IEK-3},
ddc = {540},
cid = {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:000411847500018},
doi = {10.1016/j.jelechem.2017.07.038},
url = {https://juser.fz-juelich.de/record/838292},
}