E3S Web of Conferences,
Journal Year:
2025,
Volume and Issue:
621, P. 03020 - 03020
Published: Jan. 1, 2025
Carbon
derived
from
renewable
energy
sources
plays
a
crucial
role
in
fostering
sustainability
within
supercapacitor
applications.
This
study
investigates
the
use
of
activated
carbon
produced
unique
biomass
source,
coconut
rachis,
containing
approximately
81%
carbon,
as
potential
electrode
material.
The
rachis-derived
features
high
surface
area
(around
1630
m
2
·g
−1
)
and
honeycomb-like
structure,
which
enhance
its
ability
to
adsorb
electrolyte
ions
efficiently.
is
termed
honeycomb-shaped
porous
(HSPC).
performances
these
electrodes
adsorbing
different
cations,
i.e.,
Na
+
Li
1M
SO
4
electrolytes,
were
studied
reported
higher
specific
capacitance.
performance
using
an
shows
density
window.
also
excellent
cyclic
stability
with
increment
capacitance
retention
82
%
93%
over
2000
cycles.
Keywords:
Renewable
Bioresources,
Electrochemical
Double
Layer
Capacitor
(EDLC),
Cation
adsorption,
Supercapacitors.
Journal of Materiomics,
Journal Year:
2024,
Volume and Issue:
11(1), P. 100841 - 100841
Published: March 6, 2024
Recently,
multifunctional
materials
have
received
widespread
attention
from
researchers.
Cellulose
nanofibers
(CNF)
is
one
of
biomass
with
abundant
hydroxyl
groups,
which
shows
great
potential
in
manufacturing
composite
material.
In
this
paper,
a
kind
polyaniline@CNF/polyvinyl
alcohol-H2SO4
material
(PANI@CNF/PVA-H2SO4)
was
successfully
designed
by
in-situ
chemical
polymerization
conductive
polyaniline
(PANI)
onto
CNF
aerogel
high
aspect
ratio,
and
then
coated
PVA-H2SO4
gel.
The
has
specific
capacitance
502.2
F/g
at
scan
rate
5
mV/s
as
supercapacitor
electrode.
Furthermore,
when
the
assembled
into
symmetrical
supercapacitor,
it
can
still
provide
an
energy
density
11.49
W
h/kg
power
413.55
W/kg.
Besides,
as-obtained
PANI@CNF/PVA-H2SO4
excellent
electromagnetic
shielding
performance
34.75
dB
X-band.
addition,
due
to
flexibility
PVA,
composites
be
further
applied
stress
sensors
detect
pressure
human
motion
signals.
Green Energy and Resources,
Journal Year:
2024,
Volume and Issue:
2(1), P. 100062 - 100062
Published: March 1, 2024
As
a
common
industrial
solid
waste,
fly
ash
requires
proper
processing
and
utilization
to
alleviate
environmental
pressure.
In
contrast
earlier
low-value
treatment
methods
for
ash,
such
as
its
use
in
construction
materials,
it
is
more
practical
explore
the
high-value
of
considering
elemental
ingredient
morphological
characteristics.
Herein,
this
work
comprehensively
reviews
research
progress
extracting
preparing
silica,
alumina,
zeolite
respectively
derived
from
silicon
aluminum
elements
ash.
Specifically,
mechanisms
processes
various
are
elucidated
detail,
virtues
drawbacks
production
technologies
compared
identify
economical
environmentally
friendly
method.
Importantly,
first
energy
storage
electrode
materials.
Different
synthesis
strategies
thoroughly
examined,
especially
fully
utilizing
primary
resource,
converting
into
Finally,
paper
summarizes
opportunities
challenges
associated
with
