Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: Dec. 11, 2024
Proton-conducting
materials
have
attracted
considerable
interest
because
of
their
extensive
application
in
energy
storage
and
conversion
devices.
Among
them,
metal-organic
frameworks
(MOFs)
present
tremendous
development
potential
possibilities
for
constructing
novel
advanced
proton
conductors
due
to
special
advantages
crystallinity,
designability,
porosity.
In
particular,
several
design
strategies
the
structure
MOFs
opened
new
doors
advancement
MOF
conductors,
such
as
charged
network
construction,
ligand
functionalization,
metal-center
manipulation,
defective
engineering,
guest
molecule
incorporation,
pore-space
manipulation.
With
implementation
these
strategies,
proton-conducting
developed
significantly
profoundly
within
last
decade.
Therefore,
this
review,
we
critically
discuss
analyze
fundamental
principles,
methods
targeted
at
improving
conductivity
through
representative
examples.
Besides,
structural
features,
conduction
mechanism
behavior
are
discussed
thoroughly
meticulously.
Future
endeavors
also
proposed
address
challenges
practical
research.
We
sincerely
expect
that
review
will
bring
guidance
inspiration
further
motivate
research
enthusiasm
materials.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
Abstract
2D
architectures
and
superior
physiochemical
properties
of
MXene
offer
an
exciting
opportunity
to
develop
a
new
class
polymer
electrolyte
membranes
by
controlling
the
stacking
behavior
nanosheets.
However,
assembling
nanosheets
into
macroscopic
stable
high‐performance
proton
conductors
is
challenging.
Here,
general
strategy
reported
for
achieving
MXene‐based
heterogeneous
via
crosslinked
cellulose
nanofiber/sodium
alginate
(CNF/SA).
Through
coordination
calcium
ions
with
1D
CNF/SA,
abundant
hydrogen‐bonding
networks
are
firmly
locked
network,
meanwhile,
chains
transformed
from
randomly
arranged
state
long‐range
ordered
arrangement,
such
molecular
channels
collaborate
tightly‐stacked
jointly
guide
efficient
conduction.
Thus,
as‐built
CNF/SA/MXene
(CSM)
composite
membrane
exhibits
mechanical
(164.7
MPa),
conductivity
(45.4
mS
cm
−1
),
power
density
(49.5
mW
−2
low
open
circuit
voltage
(OCV)
decay
rate
(0.4
mV
h
).
The
design
principle
material
anchoring
through
ionic‐cross‐linking
mixed‐dimensional
assembly
can
inspire
synthesis
various
ion
exchange
filtration,
transport,
sieving,
more.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(5), P. 1004 - 1004
Published: Feb. 21, 2025
Covalent
organic
frameworks
(COFs)
hold
promising
potential
as
high-temperature
proton
conductors
due
to
their
highly
ordered
nanostructures
and
high
specific
surface
areas.
However,
limited
functional
groups
poor
membrane-engineering
properties,
finding
practical
applications
for
COF-based
proton-conducting
materials
still
remains
challenging.
Herein,
we
proposed
a
universal
strategy
fabricate
composite
membranes
by
the
incorporation
of
sulfonic
acid-bearing
COFs
zwitterionic
poly(ionic
liquid)s
(PILs)
via
in
situ
polymerization.
Zwitterionic
PILs
with
methanesulfonate
counter
ions
can
work
intrinsic
sources,
acid
on
COF
nanochannels
act
extrinsic
suppliers.
Benefiting
from
spatial
nanoconfinement
long-range
enhanced
electrostatic
interactions
PILs,
densities
endow
as-prepared
membrane
(PIL@TpBD(SO3H)2)
comparable
anhydrous
conductivity
3.20
×
10-3
S
cm-1
at
90
°C,
which
is
much
higher
than
that
conventional
Nafion
(~10-5
°C
under
condition).
1H
NMR
DOSY
spectra
reveal
both
diffusion
dissociation
protons
be
drastically
facilitated
upon
nanoconfinement,
demonstrating
efficiency
conduction.
Moreover,
obtained
possess
outstanding
mechanical
thermal
stability,
crucial
application.
This
study
demonstrates
conduction
elevation
nanoconfined
provides
insight
into
engineering
stable
materials.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 23, 2024
Abstract
Hydrogen‐bonded
organic
frameworks
(HOFs)
are
promising
proton
conductive
materials
because
of
their
inherent
and
abundant
hydrogen‐bonding
sites.
However,
most
superprotonic‐conductive
HOFs
constructed
from
multiple
components
to
enable
favorable
framework
architectures
structural
integrity.
In
this
contribution,
layered
HOF‐TPB‐A
3
with
a
single
component
is
synthesized
exfoliated.
The
exfoliated
nanoplates
exhibited
anisotropic
superprotonic
conduction,
in‐plane
conductivities
reaching
1.34
×
10
−2
S
cm
−1
at
296
K
98%
relative
humidity
(RH).
This
outperforms
the
previously
reported
single‐component
comparable
state‐of‐the‐art
multiple‐component
HOFs.
high
properties
can
be
attributed
efficient
transport
along
open
channels
parallel
basal
planes.
Moreover,
an
all‐solid‐state
(ASS)
rectifier
device
demonstrated
by
combining
hydroxide
ion‐conducting
double
(LDH).
work
suggests
that
offer
more
opportunities
as
versatile
platforms
for
conductors,
making
them
candidates
conducting
media
in
protonic
devices.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(45), P. 62222 - 62234
Published: Nov. 1, 2024
Multilayered
microstructures
can
accelerate
the
proton
conduction
process
in
exchange
membranes
(PEMs).
Herein,
we
design
and
construct
PEMs
with
based
on
bifunctional
nanofibers
sulfonated
poly(ether
ether
ketone)
(SPEEK)
nanofibers.
Specifically,
composed
of
poly(vinyl
alcohol)
chitosan
are
prepared
then
combined
electrospun
SPEEK
The
stable
microstructure
is
derived
from
compatible
interfacial
property
formed
hydrogen
bonds.
multilayered
consisting
accelerates
even
at
subzero
temperature
because
regulating
pathways.
(SKNF/CPNF/SKNF)/PA
membrane
exhibits
conductivities
(0.951
±
0.138)
×
10–2
S/cm
−30
°C
(7.32
0.37)
160
°C.
Additionally,
fine
conductivity
stability
demonstrated
by
long-term
test
cooling/heating
cycle
test,
such
as
1.67
(after
1000
h),
4.52
30
810
1.12
°C,
1.01
10–1
(5
cycles).
single
fuel
cell
possesses
an
open-circuit
voltage
0.886
V
a
peak
power
density
0.508
W/cm2
130
