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@ARTICLE{Karaoglan:866754,
author = {Karaoglan, Mustafa Umut and Coplan, Can Ozgur and Glüsen,
Andreas and Müller, Martin and Stolten, Detlef and Kuralay,
Nusret Sefa},
title = {{C}omparison of the {S}ingle-{C}ell {T}esting,
{S}hort-{S}tack {T}esting and {M}athematical {M}odeling
{M}ethods for a {D}irect {M}ethanol {F}uel {C}ell},
journal = {International journal of hydrogen energy},
volume = {46},
number = {6},
issn = {0360-3199},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2019-05823},
pages = {4844-4856},
year = {2021},
abstract = {In this paper, a comparison between direct methanol fuel
cell (DMFC) measurements performed on a single cell and a
short-stack, and the results of a mathematical model for a
DMFC, is presented. The testing of a short-stack, which
consists of 5 cells with an active area of 315 cm2, was
performed at various current densities, permeation current
densities, and cathode flow rates (CFR) in order to
determine the voltage outputs of each cell. Methanol
concentration and stack temperature results obtained from
short-stack testing were then integrated into the single
cell test and single cell mathematical model as the input
parameters. For the mathematical modelling, transport
equations originating from methanol, water, and oxygen were
coupled with the electrochemical relations. Therefore, a
comparison between these three methods is made in order to
gain a deeper understanding of the effects of the operating
parameters on DMFC performance. This study showed that the
model could describe experimental results well when lower
methanol concentrations (under 1.2 M) and temperature (under
60 °C) values are used as input parameters. The results
also show very good agreement at lower methanol permeation
rates and therefore lower temperatures. It is found that the
voltage output for a given current density is higher for the
theoretical model than that of the experimental studies; and
the differences in the results can be up to 0.04 V for a
cell. Previous article in issue},
cin = {IEK-14 / IEK-3},
ddc = {620},
cid = {I:(DE-Juel1)IEK-14-20191129 / I:(DE-Juel1)IEK-3-20101013},
pnm = {135 - Fuel Cells (POF3-135) / 1231 - Electrochemistry for
Hydrogen (POF4-123) / 1111 - Effective System Transformation
Pathways (POF4-111) / 1112 - Societally Feasible
Transformation Pathways (POF4-111)},
pid = {G:(DE-HGF)POF3-135 / G:(DE-HGF)POF4-1231 /
G:(DE-HGF)POF4-1111 / G:(DE-HGF)POF4-1112},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000607531800016},
doi = {10.1016/j.ijhydene.2020.02.107},
url = {https://juser.fz-juelich.de/record/866754},
}