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.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: April 30, 2024
Abstract
The
potential
of
metal
oxides
in
electrochemical
energy
storage
encouraged
our
research
team
to
synthesize
molybdenum
oxide/tungsten
oxide
nanocomposites
(MoO
3
/WO
)
and
their
hybrid
with
reduced
graphene
(rGO),
the
form
MoO
/rGO
as
a
substrate
relatively
good
electrical
conductivity
suitable
active
surface.
In
this
context,
we
presented
behavior
these
an
electrode
for
supercapacitors
catalyst
oxidation
process
methanol/ethanol.
Our
engineered
samples
were
characterized
by
X-ray
diffraction
pattern
scanning
electron
microscopy.
As
result,
indicated
specific
capacitances
452
583
F/g
stability
88.9%
92.6%
after
2000
consecutive
GCD
cycles,
respectively.
Also,
nanocatalysts
showed
current
densities
117
170
mA/cm
2
at
scan
rate
50
mV/s,
71
89%,
respectively
chronoamperometry
analysis,
MOR
process.
Interestingly,
ethanol
process,
corresponding
42
106
values
70
82%
achieved.
can
be
attractive
options
paving
way
prospective
alcohol-based
fuel
cells.
Materials Horizons,
Journal Year:
2022,
Volume and Issue:
10(3), P. 670 - 697
Published: Dec. 16, 2022
An
all-inclusive
review
of
polyaniline-based
micro-supercapacitors
for
future
miniaturized
electrochemical
energy
storage
devices
featuring
high
density
and
power
density.
ACS Applied Energy Materials,
Journal Year:
2023,
Volume and Issue:
6(18), P. 9196 - 9206
Published: June 16, 2023
Moderated
thermal
transformation
of
metal–organic
frameworks
(MOFs)
empowers
the
synthesis
nanomaterials
with
precisely
controlled
porosities
and
morphologies,
leading
to
enhanced
performance
in
energy
storage
applications.
Herein,
we
prepared
MIL-88A-derived
Fe3C-integrated
EPCNFs
(EPCNFs
=
electrospun
porous
carbon
nanofibers)
mats
for
outside
growth
Fe-MOFs
using
a
moderated
temperature
calcination
technique.
The
applied
technique
endorsed
conversion
into
Fe2O3/NPC
(NPC
nanoporous
carbon)
without
any
destruction
morphology
nanorods.
integrated
Fe3C
reduces
intrinsic
resistance
synergizes
overall
resulting
negative
electrode
(Fe2O3/NPC@Fe3C/EPCNFs).
MOF-derived
materials
have
excellent
within
−1
0
window
potential
range.
optimized
Fe2O3/NPC-350@Fe3C/EPCNFs
exhibits
high
specific
capacitance
(531
F
g–1
at
1
A
g–1)
stable
cycling
performance,
retaining
more
than
90%
even
after
20000
cycles.
uniform,
vertical,
porous,
highly
interconnected
tetragonal
rod-like
can
also
maintain
structural
integrity
during
continuous
charge/discharge.
In
addition,
assembled
symmetric
supercapacitor
(Fe2O3/NPC-350@Fe3C/EPCNFs//Fe2O3/NPC-350@Fe3C/EPCNFs)
an
density
21.6
W
h
kg–1
power
499.05
superior
stability
(20000
cycles
20
g–1),
indicating
feasibility
practical
application
systems.
