International Journal of Energy Research,
Journal Year:
2023,
Volume and Issue:
2023, P. 1 - 15
Published: March 3, 2023
Currently,
lightweight
wearable
energy
storage
devices
are
in
great
demand
owing
to
their
use
electronics
and
energy-efficient
electric
vehicles.
Freestanding
carbon
nanofibers
replace
the
need
for
metal
substrates
while
providing
a
rapid
electrical
network
excellent
properties.
Bimetallic
oxides
with
multivalent
oxidation
states
facilitate
transfer
of
electrolytic
ions
efficient
Faradaic
reactions,
thereby
enhancing
overall
capability.
In
this
study,
CoOx@CNF
was
derived
from
ZIF-67
(zeolitic-imidazolate
framework)
@PAN-2MI
fibers
that
were
stabilized
air
at
280°C
then
annealed
argon
900°C.
Subsequently,
Co
seeded
on
subjected
hydrothermal
process
sodium
molybdate
dihydrate
solution
grow
CoMoO4
nanosheets,
eventually
forming
bimetallic
CoMoO4@CNF.
The
concentration
varied
determine
optimal
growth
conditions
nanosheets.
density
CoMoO4@CNF
sample
166.5
μWh
cm-2
power
200
μW
cm-2;
represented
nearly
twofold
increase
compared
single
metallic
CoOx@CNF.
Powering
humidity
sensors
using
only
one
supercapacitor
demonstrated.
remained
stable
during
long-term
galvanostatic
charge
discharge
cycles
(
)
retained
100%
its
specific
capacitance.
Catalysts,
Journal Year:
2022,
Volume and Issue:
12(10), P. 1188 - 1188
Published: Oct. 7, 2022
Among
various
metal
and
oxide
nanoparticles,
iron-oxide
nanoparticles
(IONPs)
have
been
more
widely
used
for
the
degradation
of
harmful
organic
dyes
inhibition
microbial
growth;
on
other
hand,
it
positively
affects
mammalian
cells.
Green
synthesis
IONPs
has
piqued
interest
researchers
because
improves
stability
is
an
environmentally
friendly
method
avoiding
use
chemicals
as
a
reducing
agent.
In
this
study,
were
synthesized
using
Psidium
guajava
leaf
extract,
which
was
further
applied
its
industrial
dye
anti-microbial
activities.
UV–visible
spectroscopy,
FTIR,
XRD,
XPS,
EDX,
FE-SEM,
HR-TEM,
Zeta
potential
analysis
to
characterize
nanoparticles.
The
managed
degrade
methylene
blue
(MB)
methyl
orange
(MO)
in
presence
H2O2.
efficiency
82.1%
95
min
53.9%
205
MB
MO,
respectively.
Likewise,
showed
good
anti-bacterial
activity
with
ZOI
13
mm
both
Shigella
sonnei
Staphylococcus
aureus
gram-positive
bacteria.
Similarly,
they
demonstrated
anti-fungal
15
Candida
tropicalis
Candidaalbicans,
Thus,
can
combat
dyes,
terminate
pathogenicity
several
human
pathogens.
Frontiers in Energy Research,
Journal Year:
2023,
Volume and Issue:
11
Published: Aug. 10, 2023
The
polypyrrole@ZrO
2
–ZnO
(PPy@ZrO
–ZnO)
electrodes
were
synthesized
using
an
in
situ
chemical
oxidative
method.
samples
characterized
by
XRD,
FTIR,
XPS,
UV-vis,
TGA,
and
BET.
In
addition,
the
electrochemical
characteristics
of
are
tested
cyclic
voltammetry
(CV),
galvanostatic
charge
discharge
(G.C.D.),
impedance
spectroscopy
(E.I.S.).
values
specific
capacitances
energy
densities
PPy@ZrO
(1.0)
(0.5)
at
a
current
density
0.5
A
g
−1
recorded
as
(395.3
F
508.5
Wh·kg
)
(195.3
351.5
),
respectively.
Furthermore,
electrode
stability
for
formed
was
also
determined,
which
exhibited
capacitance
retention
90.2%
82.4%
after
cycling
up
to
4,000
cycles.
This
work
provides
efficient
approach
potential
application
supercapacitor.
Polymers,
Journal Year:
2022,
Volume and Issue:
14(21), P. 4562 - 4562
Published: Oct. 27, 2022
This
research
reports
the
facile,
controlled,
low-cost
fabrication,
and
evaluation
of
properties
polyaniline
matrix
deposited
on
titanium
dioxide
copper(II)
oxide
ternary-composite
(PANI@TiO2-CuO)-based
electrode
material
for
supercapacitor
application.
The
process
involves
preparation
CuO
in
presence
TiO2
to
form
TiO2-CuO
by
a
facile
method,
followed
in-situ
oxidative
polymerization
aniline
monomer.
structural
physical
were
evaluated
based
results
FTIR
spectroscopy,
X-ray
diffraction
(XRD)
analysis,
photoelectron
spectroscopy
(XPS),
transmission
electron
(TEM)
scanning
(SEM)
microscopy,
thermogravimetric
analysis
(TGA),
BET
surface
areas
analysis.
indicated
that
was
dispersed
uniformly
PANI
matrix.
Owing
such
dispersion
TiO2-CuO,
PANI@TiO2-CuO
exhibits
dramatic
improvements
thermal
stability
comparison
with
pure
PANI.
cyclic
voltammetry
(CV)
confirms
reversibility
redox
transitions
this
optimized
material.
Moreover,
reveal
specific
capacitance
reaches
87.5%
retention
after
1500
cycles
under
1.0
A
g-1,
better
charge
storage
performance
as
compared
PANI@TiO2
electrodes.
enhanced
electrochemical
provides
feasible
route
promoting
its
applications
supercapacitors.
