ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(42), P. 57334 - 57345
Published: Oct. 9, 2024
Dielectric
capacitors
with
a
high
power
density
are
widely
used
in
various
pulsed
electronic
systems.
However,
their
low
comprehensive
energy
storage
performance
severely
limits
the
development
of
these
systems
terms
miniaturization
and
lightweight
design.
Herein,
we
achieved
decent
class
(Bi0.5Na0.5)0.94Ba0.06TiO3
(BNTBT)-based
ceramics
by
synergistically
manipulating
domain
configurations
grain
boundary
densities.
High-resolution
transmission
electron
microscopy
piezoresponse
force
confirm
that
composition-driven
refined
weak
polarity
effectively
improve
polarization
response
BNTBT-based
ceramics.
The
results
experimental
phase-field
simulation
analysis
indicate
size
contributes
to
its
breakdown
electric
strength
(Eb).
Benefiting
from
difference
(ΔP)
32.62
μC/cm2,
delayed
saturation
behavior,
an
ultrahigh
Eb
815.00
kV/cm,
BNT-based
simultaneously
achieve
(Wrec)
∼12.25
J/cm3
efficiency
(η)
∼86.90%.
Because
structure-induced
advantages,
also
exhibit
good
temperature
stability
range
30–150
°C.
We
believe
findings
this
work
may
provide
practical
guidance
for
high-performance
Chemistry - An Asian Journal,
Journal Year:
2023,
Volume and Issue:
19(2)
Published: Dec. 9, 2023
Cobalt-based
heterogeneous
catalysts
have
been
demonstrated
as
an
effective
PMS
activator
for
pollutant
degradation.
However,
the
limited
active
sites
on
their
surface
lead
to
unsatisfactory
catalytic
efficiency.
Immobilizing
support
material
can
be
a
promising
modification
strategy
solve
this
problem.
MXene
has
considered
ideal
due
its
unique
morphology
and
physicochemical
properties.
Therefore,
in
work,
CoS-loaded
Ti
Abstract:
Lead-free
antiferroelectric
(AFE)
ceramics
based
on
sodium
niobate
(NaNbO3,
NN)
have
drawn
garnered
interest
due
to
their
remarkable
energy
storage
capacity.
However,
The
practical
applications
of
pure
NN
been
largely
constrained
by
high
loss
density
(Wloss)
and
low
breakdown
electric
field
(Eb)
resulting
from
the
field-induced
AFE-ferroelectric
(FE)
phase
transition.
To
address
these
issues,
Bi
Ti
were
introduced
into
A-
B-sites
ceramic
chalcogenide
structure,
respectively.
After
that,
Ta
element
was
doped
B-site
(Na0.86Bi0.14)(Nb0.9Ti0.1)O3
samples,
which
effectively
improved
capacity
ceramics.
Finally,
good
properties
(with
Wrec
approximately
2.41
J·cm-3
an
efficiency
about
90.88%)
(Na0.86Bi0.14)(Nb0.75Ta0.15Ti0.1)O3
obtained
via
compositional
modification
under
conditions
a
(Eb
=
206.92
kV·cm-1).
Therefore,
results
this
study
reveal
that
introduction
tantalum
is
vible
method
improve
dielectric
Journal of Advanced Dielectrics,
Journal Year:
2024,
Volume and Issue:
15(02)
Published: Sept. 11, 2024
Dielectrics
with
high
permittivity
and
temperature
stability
are
important
for
the
development
of
high-temperature
multilayer
ceramic
capacitors
(MLCCs).
In
this
study,
Ca[Formula:
see
text]Na
x
Ti[Formula:
text]Nb
SiO
5
(abbreviated
as
CTS[Formula:
text]NN)
ceramics
were
prepared
by
solid-phase
reaction
method.
The
introduction
NN
weakens
long-range
ordered
displacement
Ti,
leading
to
a
significant
increase
in
dielectric
stability.
CTS−2%NN
samples
exhibit
(53)
TCC
[Formula:
text]
ppm/
∘
C
range
text]C
300
C.
CTS-based
behave
addition,
bandgap
increased
significantly,
which
is
favorable
improving
breakdown
strength
material.
For
text]%
samples,
reaches
621[Formula:
text]kV/cm.
Thus,
designed
dielectrics
promising
capacitors.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
A
schematic
diagram
of
the
design
strategy
to
achieve
high
energy
storage
performance
via
phase
structure
strategy:
(a)
and
(b)
dielectric
temperature
spectra,
(c)
PFM
images,
(d)
slim
unipolar
P–E
hysteresis
loop.
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(47), P. 35064 - 35073
Published: Jan. 1, 2024
A
lead-free
Sr
4−
x
La
Na
2
Hf
Nb
10−
O
30
ceramic
was
synthesized
and
characterized,
high
energy
storage
density,
efficiency
good
thermal
stability
were
simultaneously
achieved.