International Journal of Green Energy,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 15
Published: Dec. 31, 2024
A
PEM
fuel
cell
(PEMFC)
configuration
with
a
novel
zigzag
flow
field
(NZFF)
utilizing
metal
bipolar
plates
considering
cooling
channels
is
proposed,
aimed
at
enhancing
mass
transfer
and
optimizing
heat
dissipation.
The
effects
of
the
number
turns,
strategies,
operating
pressures
on
performance
PEMFC
equipped
NFZZ
are
qualitatively
quantitatively
analyzed.
results
indicated
that
compared
parallel
(PFF),
an
increase
in
although
accompanied
by
pressure
drop,
distribution
low
oxygen
concentration
areas
NZFF
more
dispersed
uniformity
oxygen,
temperature,
current
density
distributions
enhanced,
drainage
capacity
also
correspondingly
improved.
In
addition,
among
different
strategies
examined,
cross-flow
coolant
(CFC)
strategy
found
to
be
most
effective,
which
reduces
high-temperature
area
obtains
uniform
temperature
distribution,
minimum
non-uniformity
value
0.0021
comparison
same
direction
hydrogen
(SCH)
(SCO).
Finally,
from
1.0
atm
2.0
gradual
water
content
within
PEM,
while
increases
1.068
A/cm2
1.451
A/cm2,
35.9%.
Simultaneously,
reductions
both
anode
cathode
drops
inlet
velocities,
overall
enhancement
net
power
output.
Energies,
Journal Year:
2025,
Volume and Issue:
18(6), P. 1407 - 1407
Published: March 12, 2025
Adding
blockages
to
the
gas
flow
channels
in
bipolar
plates
has
a
significant
effect
on
performance
of
proton
exchange
membrane
fuel
cell
(PEMFC).
The
design
parameters
with
mainly
include
blockage
shape
(S),
number
(N),
height
(H),
and
channel–rib
width
ratio
(CRWR)
value.
This
paper
systematically
examines
combined
effects
S,
N,
H,
CRWR
value
current
density
(I),
pressure
drop
(ΔP),
net
output
power
(Wnet),
non-uniformity
oxygen
distribution
(NU)
PEMFC
through
application
orthogonal
experimental
method
(OEM).
To
provide
comprehensive
optimization
strategy,
novel
multi-criteria
decision
framework
is
introduced,
which
integrates
analytic
hierarchy
process
(AHP)
entropy
weight
(EWM)
balance
different
evaluation
objectives.
Results
from
AHP-EWM
analysis
reveal
that
values
I,
ΔP,
Wnet,
NU
are
0.415,
0.08,
0.325,
0.18,
respectively.
exhibits
greatest
PEMFC,
followed
by
S.
optimal
parameter
combination
identified
this
triangular
nine
blockages,
0.8
mm,
0.25,
corresponding
highest
score
31.8306
among
25
groups
experiments.
provides
new
perspective
certain
guidance
for
direction
PEMFC.
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(11)
Published: Nov. 1, 2024
The
design
of
flow
field
has
a
significant
impact
on
the
performance
proton
exchange
membrane
fuel
cells
(PEMFCs).
In
this
study,
novel
leaf
bionic
is
designed
and
optimized
based
Murray's
law.
power
consumption
ratio
first
used
in
PEMFC.
Additionally,
an
evaluation
criterion,
mass
transfer
efficiency
criterion
(MTEEC),
proposed
to
characterize
efficiency,
synergy
theory
analyze
differences
among
various
fields.
results
demonstrate
that
adding
multi-level
channel
obstacles
significantly
enhances
cell
output
reduces
voltage
losses
regions.
Applying
law
distribute
improves
uniformity
oxygen
concentration
distribution
alleviates
under-rib
water
accumulation.
Compared
secondary
stream
(SSFF),
structure
mesh
(SMLBFF)
demonstrates
nearly
19%
increase
current
density
at
0.45
V.
SMLBFF
exhibits
81.51%
convective
rate
compared
SSFF
0.4
Moreover,
MTEEC
shows
improvements
179.68%
0.5
A/cm2
135.43%
1.0
A/cm2,
SSFF.
