ACS Polymers Au,
Journal Year:
2024,
Volume and Issue:
4(2), P. 149 - 156
Published: Feb. 22, 2024
The
association
of
ionizable
polymers
strongly
affects
their
motion
in
solutions,
where
the
constraints
arising
from
clustering
groups
alter
macroscopic
dynamics.
interrelation
between
on
multiple
length
and
time
scales
is
fundamental
to
a
broad
range
complex
fluids
including
physical
networks,
gels,
polymer–nanoparticle
complexes
long-lived
associations
control
structure
Using
neutron
spin
echo
fully
atomistic,
multimillion
atom
molecular
dynamics
(MD)
simulations
carried
out
times
comparable
that
chain
segmental
motion,
current
study
resolves
networks
formed
by
suflonated
polystryene
solutions
for
sulfonation
fractions
0
≤
f
0.09
across
scales.
experimental
dynamic
factors
were
measured
compared
with
computational
ones,
calculated
MD
simulations,
analyzed
terms
sum
two
exponential
functions,
providing
distinctive
These
constants
capture
confined
network
fast
highly
solvated
segments.
A
unique
relationship
polymer
size
distribution
ionic
clusters
was
established
correlated
number
chains
participate
each
cluster.
correlation
associative
scales,
enabled
combining
understanding
attained
reciprocal
space
through
real
space,
large
scale
studies,
addresses
long-standing
challenge
underline
behavior
soft
materials
affect
potential
uses.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(30)
Published: May 27, 2024
Abstract
Electrochemical
water
splitting
is
a
promising
technique
for
the
production
of
high‐purity
hydrogen.
Substituting
slow
anodic
oxygen
evolution
reaction
with
an
oxidation
that
thermodynamically
more
favorable
enables
energy‐efficient
Moreover,
this
approach
facilitates
degradation
environmental
pollutants
and
synthesis
value‐added
chemicals
through
rational
selection
small
molecules
as
substrates.
Strategies
small‐molecule
electrocatalyst
design
are
critical
to
electrocatalytic
performance,
focus
on
achieving
high
current
density,
selectivity,
Faradaic
efficiency,
operational
durability.
This
perspective
discusses
key
factors
required
further
advancement,
including
technoeconomic
analysis,
new
reactor
system
design,
meeting
requirements
industrial
applications,
bridging
gap
between
fundamental
research
practical
product
detection
separation.
aims
advance
development
hybrid
electrolysis
applications.
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(15), P. 5399 - 5409
Published: Jan. 1, 2024
Development
of
high-performance
and
durable
anion-exchange
membrane
water
electrolysis
enabled
by
chain-extender
derived
high-molecular-weight
polycarbazole-based
anion-conductive
polymer.
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.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(8)
Published: Oct. 28, 2023
Abstract
Alkaline‐based
electrochemical
devices,
such
as
anion
exchange
membrane
(AEM)
fuel
cells
and
electrolyzers,
are
receiving
increasing
attention.
However,
while
the
catalysts
methodically
studied,
ionomer
is
largely
overlooked.
In
fact,
most
of
studies
in
alkaline
electrolytes
conducted
using
commercial
proton
Nafion.
The
provides
ionic
conductivity;
it
also
essential
for
gas
transport
water
management,
well
controlling
mechanical
stability
morphology
catalyst
layer.
Moreover,
has
distinct
requirements
that
differ
from
those
anion‐exchange
membranes,
a
high
permeability,
depend
on
specific
electrode,
management.
As
result,
necessary
to
tailor
structure
application
isolation
part
this
review,
an
overview
current
state
art
ionomers
provided,
summarizing
their
limitations
context
AEM
electrolyzers
cells.
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.
Small,
Journal Year:
2024,
Volume and Issue:
20(33)
Published: March 20, 2024
Transition
metal
hydroxides
have
attracted
significant
research
interest
for
their
energy
storage
and
conversion
technique
applications.
In
particular,
nickel
hydroxide
(Ni(OH)
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.
Chemical Engineering Journal,
Journal Year:
2024,
Volume and Issue:
494, P. 153111 - 153111
Published: June 14, 2024
This
review
article
comprehensively
explores
the
significant
advancements
in
electrodialysis
(ED)
technology
within
field
of
chemical
engineering,
presenting
a
holistic
overview
that
spans
fundamental
principles,
membrane
materials
and
fabrication
techniques,
operational
parameters,
wide
array
applications.
Unlike
previous
studies
often
narrow
their
focus
to
specific
aspects
ED,
this
work
synthesizes
global
advances,
bridging
gaps
between
diverse
research
themes
offer
coherent
understanding
current
trends
future
directions.
membrane-based
separation
process
driven
by
electric
potential,
is
pivotal
for
its
applications
water
purification,
desalination,
resource
recovery,
beyond.
delves
into
evolution
ion-exchange
membranes,
highlighting
innovations
materials,
alongside
advances
techniques
enhance
selectivity
efficiency.
It
also
scrutinizes
impact
parameters
on
performance
ED
systems,
addressing
challenges
like
ion
leakage,
fouling,
balance
conductivity.
Process
intensification
system
optimization
strategies
are
discussed,
revealing
how
recent
developments
contribute
energy
efficiency,
scalability,
sustainability.
The
further
extends
emerging
sectors
ranging
from
environmental
management
hydrometallurgy
industries,
underscored
case
demonstrate
practical
implementations.
Conclusively,
underlines
multidisciplinary
approach
required
advancement
technologies,
suggesting
avenues
prioritize
impact,
economic
feasibility,
technological
innovation.
Through
perspective,
it
aims
catalyze
exploration
application
some
most
pressing
challenges.
