Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 14, 2024
Abstract
Polymer
dielectrics
have
broad
applications
in
advanced
electronics
and
power
systems.
However,
they
suffer
from
low
energy
density
poor
breakdown
performance
at
high
temperatures,
limiting
their
high‐temperature
environments.
Herein,
TiO
2
@Au@AlO
x
@Au
nanofibers
with
double
coulomb
blockade
nanolayers
are
obtained
via
a
physical
sputtering
strategy
to
improve
the
storage
of
polyetherimide
composites.
Experimental
studies
finite
elemenet
phase‐field
simulations
demonstrate
that
double‐layer
effect
micro‐capacitor
Au
nanoparticles
synergistically
enhance
strength
dielectric
permittivity
composite
temperatures.
Notably,
exhibits
ultra‐high
discharged
densities
11.33
9.70
J
cm
−3
150
200
°C,
respectively,
along
charge–discharge
efficiencies
93.4%
84%,
which
far
exceed
polymer
nanocomposites
reported
so
far.
Furthermore,
excellent
cycling
(>50000
cycles
400
MV
m
−1
)
high‐power
(1.16
MW
making
it
an
ideal
candidate
for
capacitors.
Hopefully,
these
not
only
serve
as
nanofillers
composites
but
also
holds
tremendous
potential
inspirational
significance
other
such
electronics,
biomedical
fields,
optics,
catalysis.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 23, 2025
Abstract
Film
capacitors
are
widely
used
in
advanced
electrical
and
electronic
systems.
The
temperature
stability
of
polymer
dielectrics
plays
a
critical
role
supporting
their
performance
operation
at
elevated
temperatures.
For
the
last
decade,
investigations
for
new
with
high
energy
storage
higher
temperatures
(>200
°C)
have
attracted
much
attention
numerous
strategies
been
employed.
However,
there
is
currently
still
large
gap
between
lab
research
large‐scale
production.
In
this
review,
main
effects
on
dielectric
properties
analyzed
core
modification
summarized.
scientific
technological
reasons
difference
practical
application
also
discussed.
Further,
several
processes
film
preparation
typical
device
structure
design
reviewed.
current
product
launches
pertaining
high‐temperature
Conclusive
insights
future
perspectives
delineated
to
offer
strategic
direction
ongoing
prospective
innovation
materials.
Advanced Materials,
Год журнала:
2024,
Номер
36(28)
Опубликована: Апрель 26, 2024
Composite
materials
comprising
polymers
and
inorganic
nanoparticles
(NPs)
are
promising
for
energy
storage
applications,
though
challenges
in
controlling
NP
dispersion
often
result
performance
bottlenecks.
Realizing
nanocomposites
with
controlled
locations
distributions
within
polymer
microdomains
is
highly
desirable
improving
capabilities
but
a
persistent
challenge,
impeding
the
in-depth
understanding
of
structure-performance
relationship.
In
this
study,
facile
entropy-driven
self-assembly
approach
employed
to
fabricate
block
copolymer-based
supramolecular
nanocomposite
films
ordered
lamellar
structures,
which
then
used
electrostatic
film
capacitors.
The
oriented
interfacial
barriers
well-distributed
NPs
self-assembled
multilaminate
effectively
suppress
leakage
current
mitigate
risk
breakdown,
showing
superior
dielectric
strength
compared
their
disordered
counterparts.
Consequently,
optimized
composition
exhibit
high
efficiency
(>90%
at
650
MV
m
Materials Horizons,
Год журнала:
2024,
Номер
11(18), С. 4348 - 4358
Опубликована: Янв. 1, 2024
Polymer
films
are
ideal
dielectric
materials
for
energy
storage
capacitors
due
to
their
light
weight
and
flexibility,
but
lower
density
poor
heat
resistance
greatly
limit
application
in
high-temperature
storage.
Unlike
the
traditional
method
of
solely
adding
wide-bandgap
inorganic
fillers
enhance
density,
this
study
we
constructed
trap-rich
hybrid
covalently
cross-linked
networks
polyetherimide
(PEI)
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(20), С. 7627 - 7648
Опубликована: Янв. 1, 2024
Charge
transport
in
polymer
dielectrics
can
be
regulated
by
constructing
a
strong
electrostatic
interaction.
Attraction
introduces
deep
traps
to
restrain
charge
mobility
but
repulsion
augments
the
barrier
height
scatter
charges.
Materials Horizons,
Год журнала:
2024,
Номер
11(19), С. 4759 - 4768
Опубликована: Янв. 1, 2024
The
continuous
advancement
in
energy
storage
technologies
necessitates
the
iteration
of
dielectrics
urgently.
However,
current
state-of-the-art
composite
films
fail
to
meet
application
requirements
devices,
which
demand
a
combination
high
discharged
density
(Ue),
efficiency
(η),
and
excellent
high-temperature
performance.
To
address
this
challenge,
we
present
an
innovative
interlayer
composed
pure
BN
nanosheets
polyetherimide
(PEI)-based
asymmetrical
multilayered
composites
doped
with
Na0.5Bi0.5TiO3
ceramic
fibers.
This
structure
confers
PEI-based
upon
synergistic
optimization
polarization
intensity,
breakdown
strength
loss
by
designed
interface
effectiveness
adopting
tailored
filler
configuration
as
modulation
means,
can
be
further
confirmed
finite
element
simulations
comparative
experiments.
resultant
film
achieves
Ue
22.95
J
cm-3
ultra-high
η
96.81%
at
ambient
temperature,
along
performances
12.88
79.26%
150
°C,
surpassing
all
previously
reported
polymer
terms
both
metrics.
study
provides
new
insights
for
developing
high-performance
suitable
practical
applications.
