ACS Applied Energy Materials,
Journal Year:
2024,
Volume and Issue:
7(17), P. 7272 - 7284
Published: Aug. 21, 2024
Polymer
electrolyte
membrane
water
electrolyzers
(PEMWEs)
offer
clean
hydrogen
production
when
coupled
to
renewables,
requiring
minimal
overvoltages
for
efficient
operation.
This
study
adapts
and
improves
upon
a
three-electrode
configuration
utilized
in
fuel
cell
electrolyzer
technologies
comprehensive
operando
thermodynamic
analyses
of
PEMWE
operation
by
accounting
the
impact
catalyst
layer
dimensions
alignment.
Catalyst-coated
Nafion
N117-based
cells
with
precise
were
developed,
design
tolerances
determined
using
finite-element
simulations
verified
microscopic
imaging.
An
external
strip
connected
Ag/AgCl
reference
electrode
acid
solution
enabled
electrochemical
model
platinum
on
Vulcan
carbon
IrO2
catalysts
PEMWEs
artifacts.
analysis
indicated
cathodic
anodic
contributions
voltage.
Under
1
atm
hydrogen,
liquid-fed
conditions,
cathode
exhibited
non-negligible
voltage
attributed
transport
processes,
while
charge
anode
accounted
ca.
15%
series
resistance.
Above
A
cm–2,
became
main
polarization
resistance
low
frequency
inductive
response.
work
provides
critical
insights
into
methods
analyses.
Frontiers in Energy Research,
Journal Year:
2025,
Volume and Issue:
13
Published: April 17, 2025
The
increasing
demand
for
efficient
and
sustainable
hydrogen
production
has
driven
significant
advancements
in
water
electrolysis
technologies.
Among
these,
liquid
alkaline
(LAWE)
stands
out
its
cost-effectiveness
scalability.
This
manuscript
establishes
best
practices
standardized
testing
procedures
single-cell
LAWE,
focusing
on
the
use
of
nickel
foam
as
both
anode
cathode
substrates,
while
incorporating
catalysts
such
nickel-iron
layered
double
hydroxide
(NiFe-LDH)
material
nickel-molybdenum
carbon
(NiMo/C)
material.
By
providing
detailed
guidelines
preparation,
cell
assembly,
performance
evaluation,
this
work
offers
a
comprehensive
framework
to
improve
reproducibility
ensure
consistency.
results
demonstrate
that
applying
these
minimizes
variability
across
different
laboratories
experimental
setups,
laying
groundwork
more
robust
comparisons
accelerating
progress
LAWE
research.
