Journal of Alloys and Compounds,
Год журнала:
2024,
Номер
981, С. 173758 - 173758
Опубликована: Фев. 3, 2024
Different
from
most
of
the
studies
on
dielectric
energy
storage
thin
films,
which
mainly
talk
about
domain
engineering
or
interface
engineering,
our
work
revealed
effect
interaction
between
film
and
bottom
electrode
performance
ferroelectric
multilayers
by
fabricating
BaTiO3
(BT)
SiO2-BaZr0.2Ti0.8O3
(S-BZT)
with
different
layer
sequences.
With
same
periodic
number,
start
S-BZT
always
have
higher
voltage
endurance,
thus
capacity(Wrec),
than
BT.
The
highest
Wrec
was
finally
obtained
to
be
39.37
J/cm3
in
BT/S-BZT//(2PN).
Such
a
phenomenon
related
Schottky
barrier,
thought
caused
formation
2Ti3+-VO..
dipoles,
LSMO
S-BZT.
an
assumption
proved
combination
I-E
curves
C-E
curves,
finite
element
simulation
also
carried
out
simulate
electric
breakdown
process.
result
fit
very
well
experimental
result.
reliability
power
density
BT/S-BZT//(2PN)
are
good.
After
all,
opens
up
new
way
improve
capacity
films.
In
addition,
charge-discharge
behavior
is
good
performance.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(27), С. 16735 - 16747
Опубликована: Янв. 1, 2024
(1
−
x
)KNN–
BCZT-based
transparent
ceramics
with
a
W
rec
of
7.83
J
cm
−3
and
an
η
81.02%
were
obtained.
High
polarization
boundaries
conductive
mechanism
transition
revealed
to
be
the
main
reasons
for
such
good
performances.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(37), С. 20089 - 20101
Опубликована: Янв. 1, 2023
The
interfacial
polarization-couples
Schottky
barrier
height
between
BT
particles
and
the
C8P2
matrix
strongly
enhanced
energy
storage
capacity
of
this
cellulose-based
flexible
capacitors.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
12(1), С. 128 - 143
Опубликована: Ноя. 20, 2023
Due
to
the
synergistic
effect
of
field
redistribution
and
Fermi
level's
moving,
an
ESD
31.07
J
cm
−3
with
η
80.03%
was
obtained
in
SZS,
which
is
best
performance
cellulose-based
dielectric
capacitors
authors'
knowledge.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Март 18, 2024
Abstract
Despite
the
dominance
of
lead-based
piezoelectric
materials
with
ultrahigh
electric-field-induced
strain
in
actuating
applications,
seeking
eco-friendly
substitutes
an
equivalent
performance
remains
urgent
demand.
Here,
a
strategy
regulating
irreversible
non-180°
domain
via
phase
engineering
is
introduced
to
optimize
available
(the
difference
between
maximum
and
remnant
unipolar
curve)
lead-free
potassium–sodium
niobate-based
ceramics.
In
situ
synchrotron
X-ray
diffraction
Rayleigh
analysis
reveal
contribution
tetragonal–orthorhombic–rhombohedral
boundary.
The
reducing
orthorhombic
increasing
rhombohedral/tetragonal
accompanied
by
reduced
are
obtained
doping
Sb
5+
,
resulting
enlarged
due
significantly
lowered
strain.
This
optimization
mainly
attributed
wall
motion
increased
lattice
distortion,
which
beneficial
decrease
extrinsic
enhance
intrinsic
contribution.
mesoscopic
structure
miniaturized
nanosized
facilitated
switching
also
contributes
enhancement
improved
random
field
decreased
energy
barrier.
study
will
shed
light
on
design
high-performance
ceramics
for
actuator
applications.
