Processing and Application of Ceramics,
Год журнала:
2024,
Номер
18(4), С. 357 - 365
Опубликована: Янв. 1, 2024
In
this
research,
(1-x)(Ba0.9Sr0.1)TiO3-xBi(Mg2/3Nb1/3)O3
(BST-BMN,
where
x
=
0,
0.06,
0.08,
0.12
and
0.20)
powders
were
synthesized
via
a
solid-state
reaction
method.
The
corresponding
lead-free
ceramics
obtained
at
the
optimal
sintering
temperature.
For
?
material
formed
dense,
homogeneous
pseudocubic
perovskite
structures.
increase
of
BMN
content
induces
strong
relaxor
behaviours
with
diffuse
phase
transition
characteristics,
enhancing
temperature
stability
dielectric
properties.
Consequently,
exhibited
narrow
polarization-electric
field
(P-E)
loops
superior
energy
storage
capabilities.
composition
0.88BST-0.12BMN
was
found
to
be
optimal,
attributed
improvement
in
breakdown
strength,
yielding
recoverable
density
2.504
J/cm3
an
efficiency
90.2%under
electric
strength
250
kV/cm.
Furthermore,
ceramic
retains
consistent
across
temperatures
ranging
from
20
120?C
frequencies
1
100Hz,
underscoring
its
potential
for
application
high-power
pulsed
capacitors.
Journal of the American Ceramic Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 10, 2024
Abstract
High‐entropy
perovskite
ceramics
have
garnered
widespread
attention
in
the
energy
storage
field
due
to
their
diversified
composition
and
superior
performance.
However,
preparation
of
high‐performance
high‐entropy
ceramic
materials
still
faces
many
challenges
complex
structure.
This
work
systematically
studies
effects
MgO,
SiO
2
,
Li
CO
3
MnCO
on
sintering
temperature
performance
(Na
0.2
Bi
Ba
Sr
Ca
)TiO
(NBBSCT)
ceramics.
The
introduction
successfully
reduced
1150°C
achieved
a
high
efficiency
95.5%
with
this
composition.
NBBSCT
0.5
wt%MgO
exhibited
breakdown
300
kV/cm
an
density
3.7
J/cm
.
study
indicates
that
adding
appropriate
aids
can
significantly
improve
behavior
method
provides
new
insights
into
enhancement
Inorganic Chemistry Frontiers,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
The
sandwich
structure
design
strategy
can
effectively
overcome
the
trade-off
between
polarization
and
breakdown
strength
in
dielectric
ceramics,
achieving
exceptionally
high
energy
storage
performance.
