Nanomaterials,
Год журнала:
2022,
Номер
12(17), С. 2931 - 2931
Опубликована: Авг. 25, 2022
Lignin,
one
of
the
components
natural
plant
biomass,
is
a
rich
source
carbon
and
has
excellent
potential
as
valuable,
sustainable
material.
Low-cost
lignosulfonate
(LS)
doped
with
polyaniline
(PANI)
been
used
precursor
to
produce
porous
carbon.
LS
highly
dispersed
sparse
microstructure
can
be
accidentally
S
atoms.
N
double-doped
directly
synthesized
abundant
mesopores
high
surface
area
in
lamellar
network
using
PANI
another
doping
source.
This
study
explored
optimal
conditions
LS/PANI
material
different
amounts
carbonization
temperatures.
When
amount
was
4
g
temperature
700
°C,
graded
obtained,
electrochemical
performance
best.
At
0.5
A/g,
specific
capacitance
reached
333.50
F/g
(three-electrode
system)
242.20
(two-electrode
system).
After
5000
charge/discharge
cycles
at
5
maintained
good
cycling
stability
achieved
retention
rate
95.14%
97.04%
The
energy
power
densities
SNC700
samples
were
8.33
Wh/kg
62.5
W/kg
0.25
respectively,
values
that
meet
requirements
today's
commercially
available
supercapacitor
electrode
materials,
further
demonstrating
their
practicality.
paper
provides
an
efficient
double-doping
method
prepare
layered
structures.
Porous
for
storage
devices.
Abstract
Developing
novel
techniques
to
convert
lignin
into
sustainable
chemicals
and
functional
materials
is
a
critical
route
toward
the
high-value
utilization
of
lignocellulosic
biomass.
Lignin-derived
carbon
hold
great
promise
for
applications
in
energy
chemical
engineering,
catalysis
environmental
remediation.
In
this
review,
state-of-art
sciences
technologies
controllable
synthesis
lignin-derived
are
summarized,
pore
structure
crystalline
morphology
controlling
methodologies
thoroughly
outlined
critically
discussed.
Green
engineering
with
cost-effectiveness
precise
carbonization
tuning
microstructure
future
research
trends
materials.
Future
directions
that
could
be
employed
advance
commercial
then
proposed.
Advanced Functional Materials,
Год журнала:
2022,
Номер
32(49)
Опубликована: Окт. 21, 2022
Abstract
Zinc
ion
hybrid
supercapacitors
(ZIHCs)
with
both
high
power
density
and
energy
have
tremendous
potential
for
storage
applications
such
as
electric
vehicles
renewable
storage.
However,
the
large
radius
of
hydrated
Zn
2+
ions
hampers
their
efficient
in
micropores
limited
pore
sizes,
resulting
gravimetric
specific
capacitance
inferior
rate
capability
ZIHCs.
Therefore,
it
is
critically
important
to
understand
what
extent
size
influences
pores
sizes.
Herein,
porous
carbon
nanosheets
different
architectures
are
prepared
using
an
ammonium
chloride
molten
salt
carbonization
strategy.
The
influence
on
nanostructured
divergent
analyzed
by
electrochemical
methods
molecular
dynamic
simulation.
Micropores
smaller
than
6.0
Å
obstruct
diffusion
ions,
while
larger
7.5
exhibit
a
low
barrier
ions.
Mesopores
improve
exposing
electrochemically
active
sites
enhancing
Journal of Materials Chemistry A,
Год журнала:
2022,
Номер
11(3), С. 1061 - 1082
Опубликована: Дек. 7, 2022
Lignin
is
one
of
the
most
abundant
natural
polymers
and
affordable,
has
high
carbon
content
active
functional
groups.
It
been
utilized
as
electrode
materials
in
electrical
double-layer
supercapacitors
pseudo-supercapacitors.
International Journal of Biological Macromolecules,
Год журнала:
2022,
Номер
221, С. 1142 - 1149
Опубликована: Сен. 14, 2022
Sustainable
materials
are
attracting
a
lot
of
attention
since
they
will
be
critical
in
the
creation
next
generation
products
and
devices.
In
this
study,
hydrogels
were
effectively
synthesized
utilizing
lignin,
non-valorised
biopolymer
from
paper
industry.
This
study
proposes
method
based
on
lignin
to
create
highly
swollen
using
poly(ethylene)
glycol
diglycidyl
ether
(PEGDGE)
as
crosslinking
agent.
The
influence
different
crosslinker
ratios
structural
chemical
properties
resultant
was
investigated.
Pore
size
observed
lowered
when
amount
increased.
inclusion
additional
hydrophilic
groups
hydrogel
network
decreased
swelling
capacity
density
increases.
These
precursor
carbonised
electrochemically
tested
for
application
electrodes
supercapacitors
with
capacitance
characterized
function
ratio.
Nano-Micro Letters,
Год журнала:
2023,
Номер
15(1)
Опубликована: Янв. 27, 2023
Amorphous
carbons
are
promising
anodes
for
high-rate
potassium-ion
batteries.
Most
low-temperature
annealed
amorphous
display
unsatisfactory
capacities.
Heteroatom-induced
defect
engineering
of
could
enhance
their
reversible
Nevertheless,
most
lignocellulose
biomasses
lack
heteroatoms,
making
it
a
challenge
to
design
highly
heteroatom-doped
(>
10
at%).
Herein,
we
report
new
preparation
strategy
carbon
anodes.
Nitrogen/sulfur
co-doped
lignin-derived
porous
(NSLPC)
with
ultra-high
nitrogen
doping
levels
(21.6
at%
N
and
0.8
S)
from
renewable
lignin
biomacromolecule
precursors
were
prepared
through
supramolecule-mediated
pyrolysis
strategy.
This
supermolecule/lignin
composite
decomposes
forming
covalently
bonded
graphitic
carbon/amorphous
intermediate
product,
which
induces
the
formation
high
heteroatom
in
obtained
NSLPC.
unique
chemistry
NSLPC
enable
abundant
defective
active
sites
adsorption
K+
improved
kinetics.
The
anode
delivered
capacity
419
mAh
g‒1
superior
cycling
stability
(capacity
retention
96.6%
at
1
A
1000
cycles).
Potassium-ion
hybrid
capacitors
assembled
by
exhibited
excellent
(91%
2000
cycles)
energy
density
71
Wh
kg-1
power
92
W
kg-1.
ACS Applied Materials & Interfaces,
Год журнала:
2022,
Номер
14(4), С. 5425 - 5438
Опубликована: Янв. 20, 2022
The
low
energy
density
and
cost
performance
of
electrochemical
capacitors
(ECs)
are
the
principal
factors
that
limit
wide
applications
ECs.
In
this
work,
we
used
enzymatic
hydrolysis
lignin
as
carbon
source
an
ammonia
activation
methodology
to
prepare
nitrogen-doped
lignin-derived
porous
(NLPC)
electrode
materials
with
high
specific
surface
areas.
We
elucidated
free
radical
mechanism
relationship
between
nitrogen
doping
configurations,
levels,
preparation
temperatures.
Furthermore,
assembled
NLPC∥NLPC
symmetric
ECs
NLPC∥Zn
asymmetric
using
aqueous
sulfate
electrolytes.
Compared
KOH
electrolyte,
densities
were
significantly
improved.
divergence
charge
storage
characteristics
in
KOH,
Na2SO4,
ZnSO4
electrolytes
compared
by
analyzing
their
area
capacitance.
This
work
provides
a
strategy
for
sustainable
carbons
toward
densities.
