Physica Scripta,
Год журнала:
2024,
Номер
99(4), С. 045965 - 045965
Опубликована: Март 7, 2024
Abstract
Due
to
its
outstanding
ability
store
energy,
the
hybrid
energy
storage
system
known
as
supercapattery
has
attained
a
lot
of
attention.
These
devices
give
extraordinary
power
and
densities
than
supercapacitors
batteries.
In
this
research,
hydrothermal
method
is
used
synthesize
composite
material
with
equal
amounts
both
components
(a
50/50
weight
ratio)
silver
niobium
sulfide
doped
rGO@CNT.
Its
potential
evaluated
using
variety
electrochemical
investigations,
including
galvanostatic
charge–discharge
cyclic
voltammetry
measurements.
The
rGO@CNT@AgNbS
considered
most
attractive
for
electrodes
based
on
analysis
results,
specific
capacity
2750
C/g.
Additional
(CV),
(GCD),
XRD,
SEM,
15000-cycle
stability
test,
are
carried
out
better
understand
asymmetric
device.
device
displayed
significant
density
65
Wh
kg
−1
fantastic
2229
W
/k
g
.
Besides,
an
glucose
sensor
detect
glucose.
showed
sensitivity
(greater
95%)
up
small
level
This
study
demonstrates
excellent
achievement
applications,
tremendous
densities.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(6), С. 6920 - 6930
Опубликована: Фев. 2, 2024
High-rate
aqueous
hybrid
supercapacitors
(AHSCs)
have
attracted
relevant
scientific
significance
owing
to
their
expected
energy
density,
supercapacitor-level
power
and
battery-level
density.
In
this
work,
a
bimetallic
nanostructured
material
with
chromium-incorporated
cobalt
oxide
(CCO,
i.e.,
CoCr2O4)
was
prepared
via
hydrothermal
method
form
stable
cubic
obelisk
structure.
Compared
CCO
materials
using
traditional
methods,
displayed
nanowire
structure
(50
nm
diameter),
suggesting
an
enhanced
specific
surface
area
large
number
of
active
sites
for
chemical
reactions.
The
electrode
possessed
high
capacitance
(2951
F
g–1)
at
current
density
1
A
g–1,
minimum
Rct
(0.135
Ω),
the
highest
retention
(98.7%),
making
it
ideal
AHSCs.
Ex
situ
analysis
based
on
X-ray
diffraction
(XRD)
photoelectron
spectroscopy
(XPS)
showed
favorable
stability
after
10,000
cycles
without
any
phase
changes
being
detected.
GGA
+
U
methods
employed
in
functional
theory
(DFT)
also
highlighted
metallic
properties
originating
from
synergistic
effect
semiconducting
Cr2O3
Co3O4
materials.
