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@ARTICLE{Xu:840139,
author = {Xu, Liangfei and Fang, Chuan and Hu, Junming and Cheng,
Siliang and Li, Jianqiu and Ouyang, Minggao and Lehnert,
Werner},
title = {{S}elf-humidification of a {P}roton {E}lectrolyte
{M}embrane {F}uel {C}ell {S}ystem with {C}athodic {E}xhaust
{G}as {R}ecirculation},
journal = {Journal of electrochemical energy conversion and storage},
volume = {15},
number = {2},
issn = {2381-6872},
address = {New York, NY},
publisher = {ASME},
reportid = {FZJ-2017-07698},
pages = {021003},
year = {2018},
abstract = {Water management is critical for the operation of a polymer
electrolyte membrane fuel cell (PEMFC). For the purposes of
high power and long working-lifetime of PEMFCs, external
humidifiers are always utilized as a necessary part of
balance of plants to keep the imported air and fuel wet.
However, they have several disadvantages, and it is
beneficial to remove them so as to reduce system volume and
to enhance the cold-starting capability. In this paper, a
self-humidified PEMFC of an active area 250 cm2 and cell
number 320 is proposed and investigated. The imported dry
air on the cathode side is mixed with moisty exhaust gas by
using a recirculation valve, and the dry hydrogen on the
anode side is humidified by back-diffusion water through the
membrane. A nonlinear model is set up based on mass
transport and energy conservation equations to capture
dynamics of gases in the supply and exhaust manifolds, the
gas diffusion layers (GDLs), and the membrane. An analysis
is conducted to investigate the influences of parameters on
dynamic and stable performances. Simulation results show
that system performances can be greatly affected by
parameters such as air stoichiometry, current density,
exhaust gas recirculation (EGR) ratio, and membrane
thickness. By accurately controlling the EGR ratio and
carefully selecting design and operation parameters, it is
probably for a PEMFC without an external humidifier to have
similar system efficiency compared to a traditional system.},
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:000427845700003},
doi = {10.1115/1.4038628},
url = {https://juser.fz-juelich.de/record/840139},
}