Conductive
polymers
have
great
potential
applications
as
electrode
materials
for
supercapacitors
in
small
energy
storage
devices.
First,
manganese
sulfate
(MnSO4)
was
oxidized
to
dioxide
(MnO2)
microspheres
with
a
diameter
of
1.5–3.5
μm
by
catalysis
Ag+.
Subsequently,
polyaniline
(PANI)
grew
situ
on
the
surface
MnO2
dilute
solution
method,
using
self-degraded
template
an
acidic
environment.
The
gradually
reduced
Mn2+
because
acted
both
oxidant
and
polymerization
aniline,
resulting
formation
PANI
hollow
urchin-like
structure.
as-prepared
PANI,
its
high
specific
area
porous
properties,
considered
material
surface–interface
chemical
storage.
Therefore,
capacitance
could
reach
531
±
35
F/g
at
5
mV/s,
loss
41.0%
when
current
density
increased
from
1
10
A/g.
Further
analysis
charge
mechanism
revealed
that
controlled
slow
kinetics,
indicating
reaction
mainly
Faradaic
intercalation
process
inside
active
material.
A
symmetric
supercapacitor
device
also
assembled
microsphere
electrodes,
maximum
about
17.92
Wh/kg
power
500
W/kg.
Polymers,
Journal Year:
2023,
Volume and Issue:
15(12), P. 2741 - 2741
Published: June 19, 2023
Polymers
from
biomass
waste
including
plant/forest
waste,
biological
industrial
process
municipal
solid
algae,
and
livestock
are
potential
sources
for
renewable
sustainable
resources.
Converting
biomass-derived
polymers
to
functional
biochar
materials
via
pyrolysis
is
a
mature
promising
approach
as
these
products
can
be
widely
utilized
in
many
areas
such
carbon
sequestration,
power
production,
environmental
remediation,
energy
storage.
With
abundant
sources,
low
cost,
special
features,
the
derived
polymeric
substances
exhibits
great
an
alternative
electrode
material
of
high-performance
supercapacitors.
To
extend
this
scope
application,
synthesis
high-quality
will
key
issue.
This
work
systematically
reviews
char
formation
mechanisms
technologies
introduces
storage
supercapacitors
provide
overall
insight
into
polymer-based
electrochemical
Aiming
enhance
capacitance
biochar-derived
supercapacitor,
recent
progress
modification
approaches
surface
activation,
doping,
recombination
also
summarized.
review
guidance
valorizing
supercapacitor
meet
future
needs.
Small,
Journal Year:
2023,
Volume and Issue:
20(22)
Published: Dec. 27, 2023
Abstract
Developing
efficient,
lightweight,
and
durable
all‐solid‐state
supercapacitors
is
crucial
for
future
energy
storage
systems.
The
study
focuses
on
optimizing
electrode
materials
to
achieve
high
capacitance
stability.
This
introduces
a
novel
two‐step
pyrolysis
process
synthesize
activated
carbon
nanosheets
from
jute
sticks
(JAC),
resulting
in
an
optimized
JAC‐2
material
with
yield
(≈24%)
specific
surface
area
(≈2600
m
2
g
−1
).
Furthermore,
innovative
situ
synthesis
approach
employed
hybrid
nanocomposites
(NiCoLDH‐1@JAC‐2)
by
integrating
JAC
nickel‐cobalt‐layered
double
hydroxide
nanoflowers
(NiCoLDH).
These
serve
as
positive
the
negative
asymmetric
(HSCs),
exhibiting
remarkable
performance
metrics.
HSCs
of
750
F
,
capacity
209
mAh
(at
0.5
A
),
density
100
Wh
kg
250
W
)
using
PVA/KOH
solid
electrolyte,
while
maintaining
outstanding
cyclic
Importantly,
functional
theory
framework
utilized
validate
experimental
findings,
underscoring
potential
this
enhancing
HSC
enabling
large‐scale
production
transition
metal‐based
layered
hydroxides.
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(3), P. 2102 - 2115
Published: Jan. 1, 2024
NiCoMn
metal–organic
frameworks
(MOFs)
are
one
of
the
most
sought-after
materials
in
domain
supercapacitors.
Here,
they
composited
with
rGO
and
polyaniline
to
increase
surface
area
conductivity,
aiming
for
enhanced
energy
density.
Journal of Chemistry and Environment,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 45
Published: Feb. 22, 2024
This
thorough
review
article
offers
a
cutting-edge
analysis
of
the
essential
characteristics
and
developments
in
electrode
materials
electrolytes
for
supercapacitor
technology.
We
start
by
going
over
basics
supercapacitors
how
important
characterization
methods
like
electrochemical
impedance
spectroscopy,
galvanostatic
charge-discharge,
cyclic
voltammetry
work.
Specific
capacitance,
energy,
power
densities,
three
that
are
crucial
assessing
performance,
carefully
covered
this
also
analyze
many
kinds
capacitors,
including
hybrid
supercapacitors,
electric
double-layer
pseudocapacitors,
explain
their
working
principles
material-specific
characteristics.
The
study
highlights
importance
metal
oxides
hydroxides,
carbon-based
materials,
conductive
polymers,
novel
such
as
MXenes
metal-organic
frameworks.
special
qualities
each
material
class,
large
surface
area,
electrical
conductivity,
particular
redox
properties,
highlighted
section.
These
maximizing
performance
supercapacitors.
topic
is
discussed
detail,
benefits
difficulties
chances
to
improve
energy
storage,
stability,
affordability.
Parallel
this,
thoroughly
examines
various
electrolyte
kinds,
sometimes
overlooked
yet
part
Discussed
include
ionic
operating
voltage
windows,
safety
profiles,
stability
aqueous,
organic,
liquid,
gel,
solid-state
electrolytes.
paper
relationship
between
type,
explaining
selection
affects
total
density,
operational
longevity.
covers
technology
detail
with
wide
scope
an
invaluable
resource.
It
fundamental
work
scholars
practitioners
new
area.
sophisticated
insights
may
encourage
creativity
application-specific
advancement
quickly
changing
field.
presents
comprehensive
present
future
technology,
establishing
it
vital
resource
continuous
search
storage
solutions.
