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@ARTICLE{Shi:863422,
author = {Shi, Yan and Janßen, Holger and Lehnert, Werner},
title = {{A} {T}ransient {B}ehavior {S}tudy of {P}olymer
{E}lectrolyte {F}uel {C}ells with {C}yclic {C}urrent
{P}rofiles},
journal = {Energies},
volume = {12},
number = {12},
issn = {1996-1073},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2019-03492},
pages = {2370 -},
year = {2019},
abstract = {This paper reports on the effects of different load
profiles on the transient behavior of a polymer electrolyte
fuel cell (PEFC). A protocol of six tests, each with
different current density ramps, was conducted. The
corresponding cell voltage, pressure drop response, and
ohmic resistance were then experimentally investigated. The
time-dependent voltage profiles were applied to represent
the cell performance. The cathodic pressure drop and ohmic
resistance were utilized to analyze the water dynamic
behavior inside the cell. The voltage overshoot and
undershoot behavior were observed throughout the experiment.
It was found that with an increase of the current change
rates, the magnitude of voltage over/undershoots also
increased. When the holding time at the constant current
density was zero, the overshoot or undershoot behavior
disappeared. The results of the pressure drop analysis
showed that the load ramp did not have a significant effect
on the average pressure drop in the tests. During the load
cyclic operation in each test, the two-phase flow tended to
reach equilibrium in the cell. Impedance analysis showed
that the ohmic resistance changed with the change in the
current density; however, the difference between the tests
was not obvious},
cin = {IEK-3},
ddc = {620},
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:000473821400143},
doi = {10.3390/en12122370},
url = {https://juser.fz-juelich.de/record/863422},
}