Langmuir,
Год журнала:
2024,
Номер
40(9), С. 4545 - 4566
Опубликована: Фев. 22, 2024
Biomaterials
often
contain
large
quantities
of
water
(50–98%),
and
with
the
current
transition
to
a
more
biobased
economy,
drying
these
materials
will
become
increasingly
important.
Contrary
standard,
thermodynamically
inefficient
chemical
thermal
methods,
dewatering
by
membrane
separation
provide
sustainable
efficient
alternative.
However,
biomaterials
can
easily
foul
surfaces,
which
is
detrimental
performance
separations.
Improving
antifouling
properties
such
membranes
key
challenge.
Other
recent
research
has
been
dedicated
enhancing
permeate
flux
selectivity.
In
this
review,
we
present
comprehensive
overview
design
requirements
for
advances
in
using
membranes.
These
developments
offer
viable
solution
challenges
fouling
suboptimal
performances.
We
focus
on
two
emerging
development
strategies,
are
use
electric-field-assisted
surface
functionalizations,
particular
hydrogels.
Our
concludes
critical
mention
remaining
possible
directions
within
subfields.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(51)
Опубликована: Авг. 30, 2023
Abstract
High
performance
polyamide
nanofiltration
membranes
play
important
roles
in
Mg
2+
/Li
+
separation
and
Li
extraction,
but
they
are
prepared
via
multiple
time‐/labor
demanding
steps.
Both
the
scalability
of
these
engineering
membrane
modules
remain
an
elusive
challenge.
Here
design
a
Gemini‐electrolyte
monomer
(GEM)
featuring
bidentate
amine
groups,
quaternary
ammonia,
endocyclic
contorted
conformation
is
reported.
The
monomer's
low
interfacial
diffusivity
balanced
by
high
condensational
reactivity
during
its
polymerization
with
trimesoyl
chloride
(TMC),
leading
to
straightforward
formation
defect‐free,
≈14
nm
thick
membranes.
shows
highest
permeance
(≈19.2
L
m
−2
h
−1
bar
)
among
without
post‐modification,
combined
good
selectivity
(≈15.4)
stability.
validity
GEM
verified
control
monomers.
Large‐area
(1
×
2
GEM‐TMC
spiral‐wound
(effective
area:
0.5
prepared,
both
which
show
reproducible
performance.
Membranes,
Год журнала:
2024,
Номер
14(4), С. 85 - 85
Опубликована: Апрель 5, 2024
In
recent
years,
anion
exchange
membranes
(AEMs)
have
aroused
widespread
interest
in
hydrogen
production
via
water
electrolysis
using
renewable
energy
sources.
The
two
current
commercial
low-temperature
technologies
used
are
alkaline
(AWE)
and
proton
membrane
(PEM)
electrolysis.
AWE
technology
exhibited
the
advantages
of
high
stability
increased
cost-effectiveness
with
low
efficiency.
contrast,
PEM
efficiency
cost-effectiveness,
respectively.
Unfortunately,
major
challenges
that
AEMs,
as
well
corresponding
ion
transportation
membranes,
including
separator
still
face
efficiency,
long-term
stability,
under
working
conditions,
which
critical
issues
need
to
be
addressed
a
top
priority.
This
review
comprehensively
presented
research
progress
on
AEMs
providing
thorough
understanding
academic
studies
industrial
applications.
It
focused
analyzing
chemical
structure
polymers
performance
established
relationship
between
membranes.
aimed
identify
approaches
for
improving
AEM
conductivity
stability.
Additionally,
future
directions
commercialization
were
discussed
based
analysis
assessment
applications
patents.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 10, 2025
Abstract
Anion
exchange
membrane
fuel
cells
(AEMFCs)
are
among
the
most
promising
sustainable
electrochemical
technologies
to
help
solve
energy
challenges.
Compared
proton
(PEMFCs),
AEMFCs
offer
a
broader
choice
of
catalyst
materials
and
less
corrosive
operating
environment
for
bipolar
plates
membrane.
This
can
lead
potentially
lower
costs
longer
operational
life
than
PEMFCs.
These
significant
advantages
have
made
highly
competitive
in
future
cell
market,
particularly
after
advancements
developing
non‐platinum‐group‐metal
anode
electrocatalysts,
anion
membranes
ionomers,
understanding
relationships
between
conditions
mass
transport
AEMFCs.
review
aims
compile
recent
literature
provide
comprehensive
three
key
areas:
i)
mechanisms
hydrogen
oxidation
reaction
(HOR)
oxygen
reduction
(ORR)
alkaline
media;
ii)
synthesis
routes
structure‐property
cutting‐edge
HOR
ORR
as
well
ionomers;
iii)
conditions,
including
water
management
impact
CO
2
.
Finally,
based
on
these
aspects,
development
perspectives
proposed.
Nano Letters,
Год журнала:
2023,
Номер
23(9), С. 3887 - 3896
Опубликована: Апрель 24, 2023
Nafion,
as
the
mostly
used
proton
exchange
membrane
material
in
vanadium
redox
flow
batteries
(VRFBs),
encounters
serious
permeation
problems
due
to
large
size
difference
between
its
anionic
nanophase
(3-5
nm)
and
cationic
ions
(∼0.6
nm).
Bulk
hybridization
usually
suppresses
at
expense
of
conductivity
since
conventional
additives
tend
randomly
agglomerate
damage
continuity
from
unsuitable
sizes
intrinsic
incompatibility.
Here,
we
report
ionic-nanophase
strategy
Nafion
membranes
by
using
fluorinated
block
copolymers
(FBCs)
polyoxometalates
(POMs)
supramolecular
patching
additives.
The
cooperative
noncovalent
interactions
among
interfacial-active
FBCs,
POMs
can
construct
a
1
nm-shrunk
ionic
with
abundant
transport
sites,
preserved
continuity,
efficient
screeners,
which
leads
comprehensive
enhancement
conductivity,
selectivity,
VRFB
performance.
These
results
demonstrate
intriguing
potential
precisely
tuning
nanostructured
electrolyte
for
improved
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Авг. 23, 2024
Membranes
tailored
for
selective
ion
transport
represent
a
promising
avenue
toward
enhancing
sustainability
across
various
fields
including
water
treatment,
resource
recovery,
and
energy
conversion
storage.
While
nanochannels
formed
by
polymers
of
intrinsic
microporosity
(PIM)
offer
compelling
solution
with
their
uniform
durable
nanometer-sized
pores,
effectiveness
is
hindered
limited
interactions
between
ions
nanochannel.
Herein,
we
introduce
the
randomly
twisted
V-shaped
structure
Tröger's
Base
unit
quaternary
ammonium
groups
to
construct
ionized
sub-nanochannel
window
size
5.89–6.54
Å
anion
hydration
Stokes
diameter,
which
enhanced
dehydrated
monovalent
transport.
Combining
sieving
electrostatic
interaction
effects,
membranes
achieved
exceptional
selectivity
106
Cl-/CO32-
82
Cl-/SO42-,
significantly
surpassing
state-of-the-art
membranes.
This
work
provides
an
efficient
template
creating
functionalized
sub-nanometer
channels
in
PIM
membranes,
paves
way
development
precise
separation
applications.
but
hinders
effectiveness.
Here,
authors
demonstrate
ions.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(36)
Опубликована: Июнь 19, 2024
Fluoroalkyl-grafted
polyoxometalate
nanoclusters
are
used
as
supramolecular
additives
to
precisely
modify
the
ionic
domains
of
Nafion,
which
can
increase
proton
conductivity
and
selectivity
simultaneously.
The
resulting
hybrid
membranes
show
significantly
enhanced
power
density
in
fuel
cells
improved
energy
efficiency
vanadium
flow
batteries.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(37)
Опубликована: Июнь 19, 2024
Ion
exchange
membranes
(IEMs)
play
a
critical
role
in
aqueous
organic
redox
flow
batteries
(AORFBs).
Traditional
IEMs
that
feature
microphase-separated
microstructures
are
well-developed
and
easily
available
but
suffer
from
the
conductivity/selectivity
tradeoff.
The
emerging
charged
microporous
polymer
show
potential
to
overcome
this
tradeoff,
yet
their
commercialization
is
still
hindered
by
tedious
syntheses
demanding
conditions.
We
herein
combine
advantages
of
these
two
types
membrane
materials
via
simple
situ
hypercrosslinking
conventional
into
ones.
Such
concept
exemplified
very
cheap
commercial
quaternized
polyphenylene
oxide
membrane.
treatment
turns
poor-performance
high-performance
ones,
as
demonstrated
above
10-fold
selectivity
enhancement
much-improved
conductivities
more
than
doubled.
This
turn
also
confirmed
effective
stable
pH-neutral
AORFB
with
decreased
resistance
at
least
an
order
magnitude
lower
capacity
loss
rate.
battery
shows
over
other
reported
AORFBs
terms
low
rate
(0.0017
%
per
cycle)
high
current
density.
work
provides
economically
feasible
method
for
designing
AORFB-oriented
microporosity.
