ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
9(3), P. 1025 - 1034
Published: Feb. 16, 2024
Anion-exchange-membrane
water
electrolysis
(AEMWE)
is
an
emerging
technology
for
scalable
hydrogen
production.
AEMWE
has
poor
durability
when
operating
without
supporting
electrolyte
due
to
the
oxidation
of
ionomers
and
membranes
in
contact
with
anode
oxygen
evolution
reaction
(OER)
catalyst.
We
report
a
new
"passivated"
architecture
where
OER
catalysts
are
physically
separated
thin
film
amorphous
oxide
coating
that
electrically
insulating
but
conductive
hydroxide
ions.
find
2–3
nm
HfOx
passivation
layers
show
sufficient
ion
transport
minimally
limit
cell
performance
while
suppressing
ionomer
degradation
both
Ir
(500
mA·cm–2
40
h)
CoOx
(1.0
A·cm–2
100
model
porous-transport-layer-supported
AEMWE.
This
interfacial
engineering
approach
guides
electrode
design
improve
AEMWE,
particularly
systems
pure-water
feed.
Nano Convergence,
Journal Year:
2025,
Volume and Issue:
12(1)
Published: Feb. 6, 2025
Abstract
The
conversion
of
electricity
into
hydrogen
(H
2
)
gas
through
electrochemical
water
splitting
using
efficient
electrocatalysts
has
been
one
the
most
important
future
technologies
to
create
vast
amounts
clean
and
renewable
energy.
Low-temperature
electrolyzer
systems,
such
as
proton
exchange
membrane
electrolyzers,
alkaline
anion
electrolyzers
are
at
forefront
current
technologies.
Their
performance,
however,
generally
depends
on
costs
system
efficiency,
which
can
be
significantly
improved
by
developing
high-performance
enhance
kinetics
both
cathodic
evolution
reaction
anodic
oxygen
reaction.
Despite
numerous
active
research
efforts
in
catalyst
development,
performance
electrolysis
remains
insufficient
for
commercialization.
Ongoing
innovative
an
understanding
catalytic
mechanisms
critical
enhancing
their
activity
stability
electrolyzers.
This
is
still
a
focus
academic
institutes/universities
industrial
R&D
centers.
Herein,
we
provide
overview
state
directions
H
production.
Additionally,
describe
detail
technological
framework
production
utilized
relevant
global
companies.
Graphical
Polymers,
Journal Year:
2023,
Volume and Issue:
15(9), P. 2144 - 2144
Published: April 30, 2023
Water
electrolysis
coupled
with
renewable
energy
is
one
of
the
principal
methods
for
producing
green
hydrogen
(or
hydrogen).
Among
different
technologies,
evolving
anion
exchange
membrane
water
(AEMWE)
shows
utmost
promise
manufacture
in
an
inexpensive
way.
In
present
review,
we
highlight
most
current
and
noteworthy
achievements
AEMWE,
which
include
advancements
increasing
polymer
anionic
conductivity,
understanding
mechanism
degradation
AEM,
design
electrocatalyst.
The
important
issues
affecting
AEMWE
behaviour
are
highlighted,
future
constraints
openings
also
discussed.
Furthermore,
this
review
provides
strategies
dynamic
robust
electrocatalysts.
EES Catalysis,
Journal Year:
2023,
Volume and Issue:
2(1), P. 109 - 137
Published: Nov. 7, 2023
This
review
discusses
recent
insights
in
catalyst
layer
design
strategies
for
anion
exchange
membrane
water
electrolyzers,
including
electrode
design,
catalyst/ionomer
integration,
operational
variables,
situ
diagnostics,
and
cell
durability.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(29)
Published: June 3, 2024
Abstract
Designing
suitable
anion
exchange
ionomers
is
critical
to
improving
the
performance
and
in
situ
durability
of
membrane
water
electrolyzers
(AEMWEs)
as
one
promising
devices
for
producing
green
hydrogen.
Herein,
highly
gas‐permeable
dimensionally
stable
(QC6xBA
QC6xPA)
are
developed,
which
bulky
cyclohexyl
(C6)
groups
introduced
into
polymer
backbones.
QC6
50
BA‐2.1
containing
mol%
C6
composition
shows
16.6
times
higher
H
2
permeability
22.3
O
than
that
0
without
groups.
Through‐plane
swelling
decreases
12.5%
from
31.1%
(QC6
BA‐2.1)
while
OH
−
conductivity
slightly
(64.9
56.2
mS
cm
−1
BA‐2.1,
respectively,
at
30
°C).
The
electrolysis
cell
using
gas
permeable
ionomer
Ni
0.8
Co
0.2
anode
catalyst
layer
achieves
two
(2.0
A
−2
1.69
V,
IR‐included)
those
previous
in‐house
(QPAF‐4‐2.0)
(1.0
IR‐included).
During
1000
h
operation
1.0
,
exhibits
nearly
constant
voltage
with
a
decay
rate
1.1
µV
after
initial
increase
voltage,
proving
effectiveness
AEMWEs.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 29, 2024
Abstract
In
the
pursuit
of
sustainable
hydrogen
production
via
water
electrolysis,
paramount
importance
electrocatalyst
stability
emerges
as
a
defining
factor
for
long‐term
industrial
viability.
A
thorough
understanding
and
enhancement
not
only
ensure
extended
catalyst
lifetimes
but
also
pave
way
consistent
efficient
generation.
This
review
focuses
on
pivotal
role
in
determining
practical
viability
oxygen
evolution
electrocatalysts
(OECs)
large‐scale
applications
electrolysis
production.
The
paper
explores
over
initial
activity,
citing
examples
hypothetical
scenarios.
First,
figures
merits
evaluation
are
explained
along
with
available
benchmarking
protocols
evaluation.
Further,
text
delves
into
various
strategies
that
can
enhance
which
include
self‐healing/regeneration
pathway,
reaction
(OER)
mechanism
optimization
to
achieve
highly
stable
OER
stabilization
active
metals
atoms
within
inhibit
dissolution
forward
application.
interplay
stability,
cost
is
suit
application
electrocatalyst.
Lastly,
it
outlines
challenges,
prospects,
future
directions,
presenting
guide
advancing
OECs
generation
landscape.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 1, 2024
Abstract
Polybenzimidazole
has
been
widely
examined
as
a
separator
for
vanadium
redox
flow
batteries
(VRFBs)
due
to
its
low
permeability.
Its
conductivity
can
be
tackled
by
combining
1–4
µm
thin
dense
PBI
layers
with
highly
conductive
mechanically
supporting
layers,
either
lamination
or
loose
stacking.
While
gel‐PBI
is
very
soft
and
conductive,
the
shadow
effect
of
non‐conductive
pore
walls
porous
supports
adds
resistance.
In
this
work,
these
issues
are
addressed
coating
25
thick
sulfonated
polystyrene
layer
(S)
1
selective
(P)
block
crossover.
To
reduce
number
potential
defects,
two
bilayer
membranes
stacked.
A
52
stack
(PS–SP,
faces
electrodes)
shows
an
area‐specific
resistance
144.8
mΩ
cm
2
in
VO
2+
‐containing
electrolyte
permeability
6.85
×
10
−14
m
s
−1
,
both
lower
than
values
Nafion
212.
VRFB
cell
test
over
3500
charging
cycles
(1660
h)
energy
efficiency
up
88.5%
at
100
mA
−2
shown.
Performance
losses
reversed
rebalancing.
With
material
costs
1.84
USD
PSSP(1‐25‐25‐1)
membrane
promises
high
performance
costs.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 2, 2024
Abstract
Developing
high‐efficiency
alkaline
water
splitting
technology
holds
great
promise
in
potentially
revolutionizing
the
traditional
petrochemical
industry
to
a
more
sustainable
hydrogen
economy.
Importantly,
oxygen
evolution
reaction
(OER)
accompanied
at
anode
is
considered
as
critical
bottleneck
terms
of
both
complicated
mechanism
and
sluggish
kinetics,
requiring
rational
design
OER
electrocatalysts
elucidate
structure‐performance
relationship
reduce
applied
overpotential.
As
benchmarked
non‐precious
metal
candidate,
NiFe‐based
have
gained
enormous
attention
due
low‐cost,
earth‐abundance,
remarkable
intrinsic
activity,
which
are
expected
be
implemented
industrial
splitting.
In
this
contribution,
comprehensive
overview
provided,
starting
with
fundamental
mechanisms,
evaluation
metrics,
synthetic
protocols.
Subsequently,
basic
principles
corresponding
regulatory
strategies
summarized
following
sequence
substrate‐catalyst‐electrolyte
efficient
robust
toward
industrial‐scale
deployment.
Perspectives
on
remaining
challenges
instructive
opportunities
booming
field
finally
discussed.
