Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Dual
interfacial
gold
nanodot
interlayers
are
introduced
into
a
BT/P(VDF-HFP)
trilayer
composite
to
achieve
significantly
improved
discharge
energy
density
of
14.78
J
cm
−3
,
which
is
approximately
176.4%
that
the
BT-3L
(∼8.38
).
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(48)
Published: July 6, 2024
Abstract
The
vast
energy
storage
potential
of
polymer
composite
dielectrics
in
high
pulse
power
sources
stands
stark
contrast
to
the
unbalanced
improvements
discharge
density
(U
d
),
charge–discharge
efficiency
(η),
and
dielectric
strength
(E
b
)
as
reported
currently.
Herein,
a
multistage
coupled
interface
engineering
design
is
proposed:
novel
gradient
alternating
buffer
layer
(G‐A‐DBL)
constructed,
which
consists
inorganic
low‐k
nanoclay
aluminosilicate
high‐k
ferroelectric
assembled
highly
oriented
alternation
basic
unit
distribution
matrix.
This
achieves
electric
field
confinement
from
nanoscale
macroscopic
level
an
ultra‐balanced
enhancement
effect,
resulting
U
28.5
J
cm
−3
,
η
80%,
E
676
kV
mm
−1
.
universal
charge
retention
ability
traps
heterogeneous
skeletons
demonstrated
by
combining
functional
theory
calculations
scanning
probe
measurements.
G‐A‐DBL
integrates
traditional
trapping,
heterostructure
formation,
modulation,
effectively
suppressing
entire
process
carrier
excitation,
transport,
before
capture.
work
advances
understanding
within
traps,
demonstrating
most
well‐balanced
effect
for
broad
application
across
nanocomposites.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
12(20), P. 7338 - 7350
Published: Jan. 1, 2024
Tailoring
the
high
anisotropic
thermal
conductivity
of
polymer
dielectrics
for
enhanced
high-temperature
breakdown
strength
with
potential
capacitive
energy
storage.
Materials Horizons,
Journal Year:
2024,
Volume and Issue:
11(18), P. 4472 - 4481
Published: Jan. 1, 2024
Flexible
polymer-based
dielectrics
with
high
energy
storage
characteristics
over
a
wide
temperature
range
are
crucial
for
advanced
electrical
and
electronic
systems.
However,
the
intrinsic
low
dielectric
constant
drastically
degraded
breakdown
strength
hinder
development
of
at
elevated
temperatures.
Here,
we
propose
magnetic-assisted
approach
fabricating
polyethyleneimine
(PEI)-based
nanocomposite
precisely
aligned
nanofibers
within
polymer
matrix,
Al2O3
deposition
layers
applied
on
surface.
The
resulting
exhibits
simultaneously
increased
enhanced
temperatures
compared
to
pristine
PEI.
is
contributed
by
depolarization
effect
out-of-plane
orientated
in
composite
films,
while
surficial
layers,
bandgap,
effectively
prevent
charge
injection
transport
electrode/dielectric
interface.
optimally
films
exhibit
significantly
discharged
density
6.5
J
cm-3
150
°C,
approximately
41%
132%
enhancement
random
PEI
respectively.
Additionally,
metalized
multilayer
capacitor
utilizing
this
film
produces
capacitance
88
nF,
demonstrating
excellent
cyclability
flexibility
°C.
This
work
offers
an
effective
strategy
developing
superior
capacitive
performance
demonstrates
potential
high-quality
flexible
capacitors.
Polymer Composites,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 18, 2025
Abstract
A
great
deal
of
attention
is
being
paid
to
the
application
polymer
dielectric
elastomers
because
advantages
low
cost,
facile
fabrication,
and
high
operating
voltage.
However,
their
development
often
limited
by
mutually
exclusive
multifunctional
properties
such
as
constant,
breakdown
strength,
loss.
Therefore,
for
elastomer
actuators,
developing
materials
with
enhanced
strength
an
urgent
need.
In
this
work,
we
present
CNT‐ZIF,
a
nanofiller
obtained
through
in‐situ
growth
zeolitic
imidazolate
framework
(ZIF)‐67
on
surface
carbon
nanotubes
(CNT),
which
was
added
synthesized
polydimethylsiloxane
(PDMS)
matrix
obtain
composite
constant
The
CNT‐ZIF/PDMS
containing
1.93
vol%
CNT‐ZIF
exhibits
35.4
at
100
Hz,
11
times
higher
than
that
pure
1.58
CNT/PDMS
composite,
meanwhile
loss
only
0.06.
This
value
deemed
suitable
in
actuators.
work
can
be
regarded
one
strategies
designing
percolative
composites.
Highlights
ZIF‐CNT
excellent
dispersion
PDMS
has
been
prepared.
ZIF‐CNT/PDMS
composites
show
Hz.
mechanism
improving
systematically
investigated
using
classical
Cole‐Cole
model
percolation
theory.