Energy & Fuels,
Год журнала:
2024,
Номер
38(8), С. 7322 - 7330
Опубликована: Апрель 1, 2024
Proton
exchange
membranes
often
encounter
challenges
with
proton
conductivity
and
dimensional
stability
under
conditions
of
high
temperature
low
humidity.
Incorporating
proton-conductive
nanofibers
into
the
membrane
fortifies
its
establishes
extra
transfer
channels
at
interface
between
fibers
matrix,
thereby
improving
conductivity.
This
study
utilized
polyvinylidene
fluoride
(PVDF)
as
a
base
material,
modified
ethylenediamine
to
yield
amine-functionalized
cross-linked
structures.
UiO-66-NH2
UiO-66-NH2–SO3H
were
then
grown
in
situ
on
these
fibers,
resultant
structures
integrated
Nafion
fabricate
metal–organic
framework
(MOF)-modified
nanofiber
(NFPEMs).
We
examined
growth
MOFs
their
role
enhancing
membrane's
properties.
Both
successfully
incorporated,
resulting
maximum
enhancement
by
149.69
80.38%,
respectively,
compared
PVDF@Nafion,
MOF-loaded
reaches
152.11
ms/cm
80
°C
100%
relative
The
swelling
rates
also
significantly
reduced
up
59.16
57.94%,
Nafion,
effectively
boosting
thermal
stability.
These
improvements
are
attributed
additional
formed
MOFs,
contribution
acid–base
pairs,
limitations
imposed
MOF
porosity
water
molecule
mobility,
supportive
three-dimensional
network
conferred
PVDF.
Findings
from
this
research
provide
valuable
guidance
for
design
NFPEMs.
Abstract
Metal–organic
frameworks
(MOFs)
represent
a
relatively
new
family
of
materials
that
attract
lots
attention
thanks
to
their
unique
features
such
as
hierarchical
porosity,
active
metal
centers,
versatility
linkers/metal
nodes,
and
large
surface
area.
Among
the
extended
list
MOFs,
Zr‐based‐MOFs
demonstrate
comparably
superior
chemical
thermal
stabilities,
making
them
ideal
candidates
for
energy
environmental
applications.
As
Zr‐MOF,
NU‐1000
is
first
synthesized
at
Northwestern
University.
A
comprehensive
review
various
approaches
synthesis
MOFs
obtaining
properties
(e.g.,
diverse
morphologies,
area,
particular
pore
size
distribution)
applications
in
catalysis
(electro‐,
photo‐catalysis),
CO
2
reduction,
batteries,
hydrogen
storage,
gas
storage/separation,
other
fields
are
presented.
The
further
outlines
current
challenges
development
derivatives
practical
applications,
revealing
areas
future
investigation.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(16)
Опубликована: Фев. 19, 2024
Abstract
Nanoconfined
polymer
molecules
exhibit
profound
transformations
in
their
properties
and
behaviors.
Here,
we
present
the
synthesis
of
a
polymer‐in‐MOF
single
ion
conducting
solid
electrolyte,
where
segments
are
partially
confined
within
nanopores
ZIF‐8
particles
through
Lewis
acid‐base
interactions
for
solid‐state
sodium‐metal
batteries
(SSMBs).
The
unique
nanoconfinement
effectively
weakens
Na
coordination
with
anions,
facilitating
dissociation
from
salt.
Simultaneously,
well‐defined
provide
oriented
ordered
migration
channels
migration.
As
result,
this
pioneering
design
allows
electrolyte
to
achieve
transference
number
0.87,
conductivity
4.01×10
−4
S
cm
−1
,
an
extended
electrochemical
voltage
window
up
4.89
V
vs.
Na/Na
+
.
assembled
SSMBs
(with
3
2
(PO
4
)
as
cathode)
dendrite‐free
Na‐metal
deposition,
promising
rate
capability,
stable
cycling
performance
96
%
capacity
retention
over
300
cycles.
This
innovative
offers
compelling
strategy
advancing
high‐performance
safe
metal
battery
technologies.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(16)
Опубликована: Фев. 19, 2024
Abstract
Nanoconfined
polymer
molecules
exhibit
profound
transformations
in
their
properties
and
behaviors.
Here,
we
present
the
synthesis
of
a
polymer‐in‐MOF
single
ion
conducting
solid
electrolyte,
where
segments
are
partially
confined
within
nanopores
ZIF‐8
particles
through
Lewis
acid‐base
interactions
for
solid‐state
sodium‐metal
batteries
(SSMBs).
The
unique
nanoconfinement
effectively
weakens
Na
coordination
with
anions,
facilitating
dissociation
from
salt.
Simultaneously,
well‐defined
provide
oriented
ordered
migration
channels
migration.
As
result,
this
pioneering
design
allows
electrolyte
to
achieve
transference
number
0.87,
conductivity
4.01×10
−4
S
cm
−1
,
an
extended
electrochemical
voltage
window
up
4.89
V
vs.
Na/Na
+
.
assembled
SSMBs
(with
3
2
(PO
4
)
as
cathode)
dendrite‐free
Na‐metal
deposition,
promising
rate
capability,
stable
cycling
performance
96
%
capacity
retention
over
300
cycles.
This
innovative
offers
compelling
strategy
advancing
high‐performance
safe
metal
battery
technologies.
