Advanced Sustainable Systems,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 26, 2024
Abstract
To
boost
the
energy
storage
performance
of
supercapacitor
devices,
it
is
essential
to
design
electrode
material
through
rational
manipulation
with
their
structural
and
morphological
properties.
Therefore,
present
study
highlights
binder‐free,
scalable
synthesis
nickel
vanadate
(NV)
thin
films
using
a
chemical
bath
deposition
approach
variation
hydrolyzing
agent
(urea).
The
investigation
inclusively
demonstrates
that
variations
in
urea
concentration
NV
substantially
influence
both
physicochemical
electrochemical
performance.
optimal
(0.075
m
)
C‐NV3
sample
provides
nanoparticles
maximum
specific
surface
area
∼42.1
2
g
−1
,
delivering
capacitance
(
C
sp
692
F
at
1
A
current
density.
Furthermore,
hybrid
aqueous
device
solid‐state
(HSSD)
are
fabricated.
HSSD
exhibits
84
alongside
SE
29.8
Wh
kg
an
SP
1120
W
.
Thus,
work
opens
pathway
binder‐free
preparation
films,
which
efficient
cathodes
practical
applications
for
devices.
Journal of Physics Conference Series,
Год журнала:
2025,
Номер
2945(1), С. 012018 - 012018
Опубликована: Янв. 1, 2025
Abstract
The
increasing
demand
for
energy
in
the
last
decade
has
highlighted
need
efficient
and
environmentally
friendly
storage
solutions,
including
supercapacitors.
This
study
aims
to
analyze
effect
of
hydrothermal
temperature
on
electrochemical
performance
NiO/rGO
supercapacitor
electrode
applications.
method
used
synthesis
NiO
material
by
sol-gel
from
a
NiSO
4
hydrate
precursor
rGO
(Reduced
Graphene
Oxide)
Hummer
method.
were
composited
Hydrothermal
at
variations
120°C,
160°C,
200°C.
Materials
characterized
XRD,
SEM-EDX,
SAA-BET
FTIR.
To
determine
properties,
Cyclic
Voltammetry
(CV),
Electrochemical
Impedance
Spectroscopy
(EIS),
Galvanostatic
Charge
Discharge
(GCD)
tests
conducted
using
Na
2
SO
electrolyte
1M.
results
show
that
reduces
specific
capacitance
At
current
density
0.5
A/g,
is
268.65
F
g
−1
154.34
143.81
result
due
increase
impedance
(Z)
as
increases.
electrical
conductivity
decreased.
characterization
decrease
surface
area
with
temperature.
synthesized
120°C
maintained
95.06%
its
initial
during
1000
charge-discharge
cycles.
composite
high
potential
applications
stable
retention.
