Molecules,
Journal Year:
2024,
Volume and Issue:
29(24), P. 6056 - 6056
Published: Dec. 23, 2024
In
the
era
of
artificial
intelligence
and
Internet
Things,
data
storage
has
an
important
impact
on
future
development
direction
analysis.
Resistive
random-access
memory
(RRAM)
devices
are
research
hotspot
in
Things.
Perovskite-type
rare-earth
metal
oxides
common
functional
materials
considered
promising
candidates
for
RRAM
because
their
interesting
electronic
properties
depend
interaction
between
oxygen
ions,
transition
metals,
metals.
LaCoO3,
NdCoO3,
SmCoO3
typical
cobaltates
(RCoO3).
These
perovskite
were
fabricated
by
electrospinning
calcination
method.
The
aim
this
study
was
to
investigate
resistive
switching
effect
RCoO3
structure.
vacancies
helpful
form
conductive
filaments,
which
dominates
resistance
mechanism
Pt/RCoO3/Pt.
investigated,
including
barrier
height
shape
filaments.
This
confirmed
potential
application
devices.
Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
38(21), P. 21468 - 21481
Published: Oct. 29, 2024
The
innovative
use
of
a
2D
composite
material
with
specific
morphology
plays
predominant
role
in
futuristic
supercapacitor
applications.
This
study
involves
nanocomposite
exfoliated
h-BN
nanosheets-Bi2S3
nanorods,
prepared
using
an
ultrasonic
approach
that
offers
stacked
layer,
high
surface-to-volume
ratio,
and
good
electrical
conductivity,
leading
to
integral
area
cyclic
voltammetry
(CV)
analysis
longer
charging
discharging
time
galvanostatic
charge–discharge
(GCD)
studies,
demonstrating
higher
capacities
the
ability
store
charge
for
period.
h-BN-Bi2S3
NCs
was
studied
HRTEM
analysis,
revealing
nanosheets
consist
nanoplatelets
are
well-embellished
on
Bi2S3
nanorods.
Moreover,
electrochemical
activities
were
evaluated
three-electrode
system,
which
exhibits
outstanding
capacity
779.9
C/g
at
scan
rate
10
mV/s
excellent
capacitive
retention
94.3%
over
5000
cycles.
In
addition,
real-life
applications,
hybrid
(HSC)
device
h-BN-Bi2S3//AC
designed,
its
properties
examined
two-electrode
delivers
energy
density
(EHD)
69.8
Wh/kg,
corresponding
power
(PHD)
1689.7
W/kg,
shows
92.5%
6000
Solid State Sciences,
Journal Year:
2024,
Volume and Issue:
152, P. 107537 - 107537
Published: April 11, 2024
3D-Co3O4
nanowires
were
grown
on
anodized
stainless
steel
(SSA)
using
a
simple
hydrothermal
technique,
with
SSA
as
cost-effective
porous
substrate.
The
originality
of
this
work
is
to
enhance
surface
activity
and
material
adhesion
by
anodizing
(SS).
After
growth,
the
thermally
treated
at
400
°C
for
2
h.
By
varying
SS
anodization
time
from
0
900s,
changes
in
structural,
morphological,
electrochemical
properties
Co3O4
observed.
XRD
analysis
confirmed
polycrystalline
nature
face-centered
cubic
phase.
SEM
imaging
showed
noticeable
density
roughness.
Supercapacitive
evaluated
cyclic
voltammetry,
galvanostatic
charge-discharge,
impedance
spectroscopy
(EIS)
techniques,
SSANWs-300
exhibiting
highest
specific
capacitance
529
Fg-1.
Dunn's
method
was
used
analyze
contribution
capacitive
diffusive
mechanisms
charge
storage.
EIS
results
indicated
excellent
electronic
conductivity.
study
suggests
that
holds
promise
energy
storage
applications.
Transactions of Tianjin University,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 15, 2024
Abstract
The
development
of
high-performance,
reproducible
carbon
(C)-based
supercapacitors
remains
a
significant
challenge
because
limited
specific
capacitance.
Herein,
we
present
novel
strategy
for
fabricating
LaCoO
x
and
cobalt
(Co)-doped
nanoporous
C
(LaCoO
/Co@ZNC)
through
the
carbonization
Co/Zn-zeolitic
imidazolate
framework
(ZIF)
crystals
derived
from
PVP-Co/Zn/La
precursor.
unique
ZIF
structure
effectively
disrupted
graphitic
framework,
preserved
Co
active
sites,
enhanced
electrical
conductivity.
synergistic
interaction
between
pyridinic
nitrogen
ions
further
promoted
redox
reactions.
In
addition,
formation
hierarchical
pore
zinc
sublimation
facilitated
electrolyte
diffusion.
resulting
/Co@ZNC
exhibited
exceptional
electrochemical
performance,
delivering
remarkable
capacitance
2,789
F/g
at
1
A/g
outstanding
cycling
stability
with
92%
retention
after
3,750
cycles.
Our
findings
provide
basis
promising
approach
to
advancing
C-based
energy
storage
technologies.
