Energy Sources Part A Recovery Utilization and Environmental Effects,
Год журнала:
2024,
Номер
46(1), С. 1 - 14
Опубликована: Сен. 2, 2024
Porous
carbon
has
continuously
been
explored
based
on
biomass
for
green
energy
storage
due
to
its
abundant,
renewable,
environmentally
friendly
resource,
economical
features,
and
thermal-chemical
stability.
Therefore,
this
study
aimed
present
porous
derived
from
sugarcane
or
Saccharum
officinarum
L.
leaf
as
a
precursor,
achieved
through
KOH
activation
strategy
that
combines
two-step
pyrolysis
process.
The
synthesized
material
exhibited
an
interconnected
3D
hierarchical
structure,
high
specific
surface
area
of
752
m2/g,
purity
91.38%.
Supercapacitor
cell
electrode
had
the
highest
capacitance
471
F/g
induced
by
0.5
M
KOH.
Furthermore,
in
1
H2SO4
electrolyte
solution,
symmetrical
supercapacitor
electrodes
produced
65.55
Wh/Kg
at
power
output
329
W/Kg.
As
result,
sustainable
method
was
established
using
source
is
applied
high-performance
material.
Polymers,
Год журнала:
2025,
Номер
17(5), С. 567 - 567
Опубликована: Фев. 20, 2025
As
a
typical
heavy
metal
pollutant
discharged
from
industrial
activities,
nickel
ions
are
highly
bioaccumulative
and
carcinogenic,
low
concentrations
(>0.5
mg/L)
can
disrupt
the
balance
of
aquatic
ecosystems
pose
threat
to
human
health.
In
this
study,
bifunctional
adsorbent
based
on
carboxymethyl
cellulose/boron
nitride
hydrogel
was
prepared
for
treatment
nickel-containing
wastewater
with
high
adsorption
capacity
Ni2+
(800
mg/L,
344
mg/g),
after
adsorption,
waste
gel
converted
into
nickel-doped
porous
carbon
material
through
carbonization
used
as
bilayer
capacitor
electrode
achieve
specific
capacitance
40.6
F/g
at
current
density
1
A/g.
The
retention
rate
>98%
150
cycles.
This
strategy
simultaneously
solves
problems
purification
(the
method
is
applicable
medium-
high-concentration
heavy-metal
wastewater)
environmental
pollution
caused
by
adsorbents,
provides
new
paradigm
“adsorption-resourcing”
closed-loop
pollutants.
ACS Applied Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 4, 2025
This
study
aims
to
enhance
the
electrochemical
performance
of
supercapacitors
by
maximizing
specific
surface
area
and
treatment
carbon-material
electrodes
through
fluorination
doping.
Polyacrylonitrile
(PAN)-based
carbon
fibers
(PCFs)
were
produced
via
electrospinning
subsequently
activated
with
potassium
hydroxide
(KOH)
at
800
°C
obtain
PAN-based
(APCFs).
Direct
was
then
used
synthesize
fluorinated
(FPCFs).
The
electrode
materials
maximized
adjusting
concentration
solution.
effect
on
changes
in
elemental
content
precisely
managed
mitigate
decrease
porosity.
pore
size
distribution,
vital
for
determining
capacitance
supercapacitors,
thoroughly
assessed.
After
activation
processes,
FPCFs
increased
significantly
1753.2
m2
g–1.
value
is
notably
higher
than
that
commercial
carbons,
which
typically
range
from
1200
1500
supercapacitor
properties
resulting
evaluated,
revealing
a
176.2
F
g–1
FPCF
an
electrospun
PAN
7
wt
%.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 6, 2025
Recently,
significant
progress
has
been
made
in
the
application
of
biomass
field
supercapacitors,
particularly
development
high-performance
electrode
materials,
which
shows
great
potential
and
promise.
Despite
these
advancements,
impact
specific
surface
area
pyrrolic
nitrogen
content
on
final
material
performance
remains
inconclusive.
The
study
underscores
pivotal
role
morphology
doping
process,
highlighting
relationship
between
electrical
properties
content.
Notably,
when
both
increase
concurrently,
exhibit
a
consistent
"volcano-like"
transition.
Building
insights,
porous
nitrogen-containing
carbon
material,
PCH-G-CR2,
was
synthesized.
This
is
characterized
by
medium
area,
high
content,
rich
microporous
structure.
In
three-electrode
system,
it
demonstrates
capacitance
up
to
551.25
F/g
at
current
density
0.5
A/g.
Moreover,
its
symmetrical
device
attained
an
energy
45.92
Wh/kg
power
kW/kg.
capacity
retention
rate
83.44%
after
30,000
cycles
10
proposes
eco-friendly
efficient
method
for
preparing
biomass-based
hydrothermal
materials
suitable
supercapacitors.
