The
development
of
high-performance,
low-cost
supercapacitors
holds
significant
importance
for
the
use
renewable
energy.
However,
enhancing
their
energy
density
without
compromising
inherent
properties
remains
a
formidable
challenge.
In
this
study,
method
flame-induced
oxidation
is
introduced
to
enhance
wettability
and
porosity
lignin-based
carbon
nanomaterial.
results
FTIR,
XRD,
XPS,
Raman
spectroscopy
confirmed
effectiveness
oxidation.
finally
obtained
nanomaterial
possesses
specific
surface
area
497.84
m2
g–1
abundant
heteroatom
content
(O:
7.3%,
N:
6.9%,
S:
1.5%).
As
result,
assembled
demonstrated
an
26.45
W
h
kg–1
at
power
800
kg–1.
Trasatti
ion
diffusion
analysis
reveal
that
outstanding
storage
are
attributed
synergistic
effect
enriched
developed
nanopore
structure.
This
work
introduces
approach
designing
material
with
appropriate
pore
size
develop
high-performance
supercapacitors.
Journal of Power Sources,
Journal Year:
2024,
Volume and Issue:
617, P. 235140 - 235140
Published: Aug. 1, 2024
Carbon
materials
play
a
fundamental
role
in
electrochemical
energy
storage
due
to
their
appealing
properties,
including
low
cost,
high
availability,
environmental
impact,
surface
functional
groups,
electrical
conductivity,
alongside
thermal,
mechanical,
and
chemical
stability,
among
other
factors.
Currently,
carbon
can
be
considered
the
most
extensively
explored
family
field
of
supercapacitors
batteries,
which
are
devices
covering
wide
range
applications
demanding
power
energy.
However,
as
with
all
technologies,
there
is
process
adaptation
optimization;
hence,
have
been
aligning
advances
that
emerge.
Similarly,
over
years,
new
methods
processes
discovered
produce
carbons
more
suitable
for
storage,
adapting
them
present
good
synergy
metal-based
compounds
meet
current
standards.
In
this
work,
we
compilation
used
from
inception
these
technologies
day.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(15), P. e35543 - e35543
Published: Aug. 1, 2024
Supercapacitors
(SCs),
including
electric
double-layer
capacitors
(EDLCs),
pseudocapacitors,
and
hybrid
capacitors,
are
esteemed
for
their
high
power
density
attractive
features
such
as
robust
safety,
fast
charging,
low
maintenance,
prolonged
cycling
lifespan,
sparking
significant
interest.
Carbon
quantum
dots
(CQDs)
fluorescent
nanomaterials
with
small
size,
broad
excitation
spectrum,
stable
fluorescence,
adjustable
emission
wavelengths.
They
widely
used
in
optoelectronics,
medical
diagnostics,
energy
storage
due
to
biocompatibility,
toxicity,
rich
surface
functional
groups,
abundant
electron-hole
pairs,
large
specific
area,
tunable
heteroatom
doping.
In
this
short
review,
we
briefly
discussed
the
advantages
disadvantages
of
bottom-up
top-down
CQD
synthesis
methods.
The
arc-discharge
technique,
laser
ablation
plasma
treatment,
ultrasound
electrochemical
chemical
exfoliation,
combustion
among
initial
approaches.
subsequent
section
delineates
waste-derived
methods,
encompassing
microwave
synthesis,
hydrothermal
thermal
pyrolysis,
metal-organic
framework
template-assisted
technique.
addition,
review
focuses
on
operational
mechanism
supercapacitors,
properties,
utilization
CQDs
supercapacitors.
Carbon Trends,
Journal Year:
2024,
Volume and Issue:
16, P. 100381 - 100381
Published: July 21, 2024
The
demand
for
suitable
electrode
materials
energy
storage
devices,
driven
by
increasing
needs
and
environmental
concerns,
has
led
to
the
investigation
of
green
synthesis
methods.
In
this
study,
a
composite
material
(rGO@NCQDs)
comprising
nitrogen-doped
carbon
quantum
dots
(NCQDs)
derived
from
Moosa
balbeesiaana
peels
reduced
graphene
oxide
(rGO)
was
synthesized
via
hydrothermal
methods
evaluate
its
photophysical
properties
electrochemical
performance
supercapacitors
applications.
Additionally,
behavior
rGONCQDs
combined
with
Vanadium
pentoxide
(V2O5)
explored.
Characterization
techniques
including
FTIR
spectroscopy
revealed
typical
carbon-based
features
in
rGO-decorated
NCQDs,
rGONCQDs@V2O5
composite.
SEM
analysis
illustrated
distinctive
surface
structures
(mushroom-shaped
rGO@NCQDs
flowered-shaped
rGONCQDs@V2O5),
while
XRD
confirmed
crystalline
specific
sizes.
Photophysical
investigations
demonstrated
significant
Solvatochromic
shifts
strong
solute-solvent
interactions
composites.
Electrochemical
studies,
cyclic
Voltammetry
Galvanostatic
measurements,
exhibited
promising
metrics.
Specifically,
capacitance
134.68
Fg−1
excellent
retention
over
5000
charge-discharge
cycles.
contrast,
maximum
562.62
at
scan
rate
10
mVs−1
exceptional
cycle
stability
(96
%
cycles).
These
findings
highlight
potential
composites
as
efficient
supercapacitors,
offering
enhanced
stability.
study
underscores
importance
approaches
developing
functional
sustainable
Journal of Applied Polymer Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 14, 2025
ABSTRACT
The
rapid
development
of
flexible
electronic
devices
has
placed
higher
demands
on
the
high‐performance
supercapacitors.
In
this
work,
a
safe
and
simple
method
was
developed
to
prepare
cobalt–nickel
layered
double
hydroxide
(CoNi‐LDH)
electrodes.
Metal–organic
framework
(MOF)‐derived
CoNi‐LDH
successfully
grown
surface
polypropylene
nonwoven
carbon
fiber
membranes
through
plasma
oxidation
treatment,
grafting
cobalt‐based
MOFs,
room‐temperature
etching
in
Ni
2+
solution.
prepared
modified
membrane
(CPO‐CoNi‐40‐0.5)
good
mechanical
properties
with
tensile
strength
159.26
±
63.03
kPa.
addition,
CPO‐CoNi‐40‐0.5
electrode
high
specific
capacitance
580
F
g
−1
at
1
A
.
assembled
supercapacitor
maintains
99%
initial
capacity
after
7000
cycles
98%
when
it
is
folded
90°,
showing
excellent
long
cycle
stability
bending
resistance.
This
paper
provides
new
way
promote
low‐cost
