ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(34), P. 45433 - 45446
Published: Aug. 13, 2024
Electrochemical
technologies
for
water
treatment,
resource
recovery,
energy
generation,
and
storage
rely
on
charged
polymer
membranes
to
selectively
transport
ions.
With
the
rise
of
applications
involving
hypersaline
brines,
such
as
management
desalination
brine
or
recovery
ions
from
there
is
an
urgent
need
that
can
sustain
high
conductivity
selectivity
under
challenging
conditions.
Current
are
constrained
by
inherent
trade-off
between
selectivity,
alongside
concerns
regarding
their
costs.
Moreover,
a
gap
in
fundamental
understanding
ion
within
at
salinities
prevents
development
could
meet
these
stringent
requirements
efficiently.
Here,
we
present
synthesis
scalable,
highly
demonstrate
while
contacting
1
5
molal
NaCl
solutions.
A
detailed
analysis
membrane
properties
reveals
proportion
bound
membranes,
enabled
charge
content
hydrophilic
structure
polymers,
enhances
both
partitioning
diffusion
selectivities
membranes.
These
structure/property
relationships
derived
this
study
offer
valuable
guidance
designing
next-generation
simultaneously
achieve
exceptional
high-salinity
Annual Review of Chemical and Biomolecular Engineering,
Journal Year:
2024,
Volume and Issue:
15(1), P. 243 - 266
Published: April 25, 2024
Sustainable
energy
solutions
and
electrification
are
driving
increased
demand
for
critical
minerals.
Unfortunately,
current
mineral
processing
techniques
resource
intensive,
use
large
quantities
of
hazardous
chemicals,
occur
at
centralized
facilities
to
realize
economies
scale.
These
aspects
existing
technologies
odds
with
the
sustainability
goals
Here,
we
argue
that
small
footprint
modular
nature
membrane
position
them
well
address
declining
concentrations
in
ores
brines,
variable
feed
encountered
recycling,
environmental
issues
associated
separation
processes;
thus,
provide
new
sustainable
pathways
strengthening
resilient
supply
chains.
The
success
creating
circular
hinges
on
overcoming
diverse
barriers
across
molecular
infrastructure
scales.
As
such,
solving
these
challenges
requires
convergence
research
disciplines
rather
than
isolated
innovations.
ACS ES&T Engineering,
Journal Year:
2024,
Volume and Issue:
4(2), P. 277 - 289
Published: Jan. 26, 2024
Dense
polymer
membranes
enable
a
diverse
range
of
separations
and
clean
energy
technologies,
including
gas
separation,
water
treatment,
renewable
fuel
production
or
conversion.
The
transport
small
molecular
ionic
solutes
in
the
majority
these
is
described
by
same
solution-diffusion
mechanism,
yet
comparison
membrane
separation
performance
across
applications
rare.
A
better
understanding
how
structure–property
relationships
driving
forces
compare
among
would
drive
innovation
development
identifying
opportunities
for
cross-disciplinary
knowledge
transfer.
Here,
we
aim
to
inspire
such
cross-pollination
evaluating
selectivity
electrochemical
29
nine
different
using
common
framework
grounded
physicochemical
characteristics
permeating
rejected
solutes.
Our
analysis
shows
that
highly
selective
usually
exhibit
high
solute
rejection,
rather
than
fast
permeation,
often
exploit
contrasts
size
charge
nonelectrostatic
chemical
property,
polarizability.
We
also
highlight
power
(e.g.,
fact
applied
electric
potential
acts
on
charged
but
not
neutral
ones)
effective
processes,
even
when
itself
has
poor
selectivity.
conclude
proposing
several
research
are
likely
impact
multiple
areas
science.
high-level
perspective
fields
presented
herein
aims
promote
enabling
comparisons
applications.
ACS Applied Polymer Materials,
Journal Year:
2024,
Volume and Issue:
6(3), P. 2022 - 2030
Published: Jan. 26, 2024
Ion-selective
membranes
are
necessary
components
of
many
electrochemical
systems
including
fuel
cells,
electrolyzers,
redox
flow
batteries,
and
electrodialyzers.
Perfluorinated
sulfonated
(PFSMs)
dominate
these
applications
due
to
their
excellent
combination
fast
ion
transport,
stability,
processability.
However,
perfluorinated
cation
exchange
(CEMs)
expensive,
production
process
involves
chemistry
that
generates
toxic
chemicals.
The
development
affordable,
nonfluorinated
with
a
competitive
high
selectivity,
stability
could
help
enable
the
widespread
use
technologies
listed
above
while
hastening
emerging
systems,
aqueous
alkaline
CO2
sorbent
regeneration.
To
this
end,
we
pursue
thin-film
composite
polyamide
(PA-TFCs)
membranes─those
typically
find
application
in
reverse
osmosis
nanofiltration
desalination─as
cation-selective
membranes.
Given
negative
surface
charge
under
neutral-to-alkaline
conditions,
PA-TFCs
can
serve
as
effective
CEMs
pH
regimes.
We
prepared
series
from
traditional
monomers
(trimesoyl
chloride
piperazine)
compared
thicknesses,
densities,
water
transport
properties,
long-term
environment
(Nafion
FKE)
commercial
some
best-performing
PA-TFC
have
similar
resistances
Na+
transference
numbers
Nafion
117
Na2SO4
NaHCO3-containing
solutions.
This
proof-of-principle
study
suggests
further
optimization
cost-effective
membrane
alternatives
PFSMs.
Proceedings of the National Academy of Sciences,
Journal Year:
2025,
Volume and Issue:
122(6)
Published: Feb. 7, 2025
The
growing
demand
for
portable
sensors
point-of-care
(POC)
and
onsite
health
monitoring
has
led
to
significant
interest
in
developing
suitable
power
sources.
In
this
study,
we
developed
a
microfluidic
chip-integrated
reverse
electrodialysis
(μRED)
system
ecofriendly
generation
with
monolithic
operation.
Leveraging
its
fully
ionic
characteristic,
μRED
was
successfully
applied
an
diode,
thereby
demonstrating
capability
seamless
integration.
feasibility
of
operating
bipolar
electrode
sensor
without
external
supply
demonstrated,
highlighting
broad
applicability
electrochemical
sensors.
great
potential
future
applications,
including
POC
diagnostics
wearable
devices.
