Carbon
nanosheets
(CNSs)
have
drawn
numerous
attention
as
promising
anodes
in
energy
storage
devices
due
to
their
large
specific
surface
area
and
excellent
electrical
conductivity
similar
graphene.
Herein,
ultrathin
CNSs
were
constructed
through
NaCl-KCl
templates
coupled
with
ice-induced
assembly
strategy
from
coal
tar
pitch-based
carbon
quantum
dots
(CQDs).
The
ice
can
manipulate
the
salt
crystal
growth
direction
dominantly
guide
distribution
of
CQDs
on
templates,
whereas
liquid
salts
not
only
act
solvent
load
disperse
but
molecular
facilitate
formation
during
carbonization
process.
prepared
exhibit
twisted
lamellar
structures,
abundant
hierarchical
nanopores,
a
moderate
area.
Benefiting
these
unique
microstructure
features,
optimized
CNS-3
adopted
anode
for
lithium-ion
batteries
displays
prominent
electrochemical
features
high
reversible
capacity
(453
mAh·g−1
at
50
mA·g−1),
outstanding
rate
capability
(225
1000
superior
cycle
stability
(94.3%
capacitance
retention
after
500
cycles
mA·g−1).
Our
work
provides
novel
effective
approach
fabricate
by
employing
low-cost
derived
pitch
potential
candidates
applied
batteries.
Batteries,
Год журнала:
2024,
Номер
10(7), С. 256 - 256
Опубликована: Июль 17, 2024
The
evolution
of
electric
double-layer
capacitors
(EDLCs)
has
significantly
benefited
from
advancements
in
graphene-based
materials,
particularly
graphene
oxide
(GO)
and
reduced
(rGO).
This
systematic
review
consolidates
analyzes
existing
research
on
the
roles
GO
rGO
enhancing
performance
EDLCs,
focusing
synthesis
methods,
electrode
fabrication,
electrolytes,
metrics
such
as
capacitance,
energy
density,
cycling
stability.
Following
PICOS
PRISMA
frameworks,
a
comprehensive
literature
search
was
conducted
across
Scopus,
Web
Science,
PubMed,
IEEE
Xplore,
covering
period
2010
to
2023.
A
total
128
articles
were
initially
identified,
with
27
studies
meeting
inclusion
criteria
after
rigorous
screening
full-text
analysis.
Key
findings
reveal
that
incorporation
EDLCs
leads
significant
improvements
specific
Notable
include
novel
techniques
composite
materials
nitrogen-doped
graphene,
graphene/polyaniline
hybrids,
various
metal
oxide–graphene
composites,
which
exhibit
superior
electrochemical
performance.
However,
challenges
material
scalability,
environmental
sustainability,
consistency
methods
remain.
stresses
great
potential
development
high-performance
highlights
need
for
continued
address
further
optimize
properties
fabrication
techniques.
Energy & Fuels,
Год журнала:
2024,
Номер
38(11), С. 9186 - 9217
Опубликована: Май 13, 2024
Advancement
in
energy
storage
technologies
is
directly
related
to
social
development.
As
an
advanced
technology,
supercapacitors
(SCs)
have
gained
significant
attention
owing
their
exceptional
performance
terms
of
density
and
power
density.
Electrodes
are
the
most
important
components
a
supercapacitor
cell;
thus,
this
review
primarily
deals
with
various
types
transition
metal-based
electrodes.
Specifically,
bimetallic
nickel
cobalt
(NiCo)-chalcogenides
phosphides
received
great
due
preeminent
specific
capacitance,
tunable
electronic
structure,
redox
chemistry,
presence
multiple
oxidation
states,
morphological
tenability.
However,
applications
these
materials
practical
hindered
by
volumetric
expansion
during
charge/discharge,
low
rate-capability,
cyclic
stability.
This
highlights
advancement
three-dimensional
(3D)
NiCo-chalcogenides
phosphide
electrodes
over
two-dimensional
(2D)
as
structure
tends
improve
electrocatalytic
activity
stability
NiCo-based
hybrid
devices.
Researchers
developed
number
modifications
obtain
optimized,
enhanced
materials.
In
addition,
advances
on
metal
organic
framework
(MOF)-derived
3D
architecture
for
SCs
discussed
detail,
performances
also
summarized.
report
outlines
major
challenges
some
issues
increasing
SCs,
future
research
perspectives
suggested.
ACS Applied Energy Materials,
Год журнала:
2024,
Номер
7(2), С. 735 - 748
Опубликована: Янв. 2, 2024
Nickel
foam-supported
binder-free
cobalt
manganese
selenide
(CoMnSe@NF)
was
grown
by
in
situ
deposition
using
metal
organic
frameworks
(MOFs)
as
the
template
with
node
engineering.
The
CoMnSe@NF
electrode
employed
positive
for
supercapacitors
delivered
well-pronounced
conductivity,
a
high
areal
capacity
(Ca)
of
1714
mC
cm–2
at
1
mA
cm–2,
and
specific
(Cs)
519
C
g1–
(1
A
g–1)
withstanding
over
5000
cycles
good
retention
87%
its
initial
capacity.
outstanding
electrochemical
profile
can
be
credited
to
tailor-made
synergetic
surface,
bearing
densely
packed
2-dimensional
sheets
harboring
numerous
redox
sites
an
even
distribution
voids,
allowing
easy
passageway
diffusion
electrolyte.
Armed
said
caliber
CoMnSe@NF,
asymmetric
device
fabricated
(CoMnSe@NF-2h//O,
N,
S@AC@NF)
remarkable
139
g–1,
maximum
energy
density
(Es)
35.47
W
h
kg–1,
power
11,500
remaining
intact
beyond
10,000
charge–discharge
retaining
82.6%
ACS Applied Electronic Materials,
Год журнала:
2024,
Номер
6(6), С. 4108 - 4119
Опубликована: Июнь 12, 2024
In
this
study,
using
graphene
oxide
(GO),
glutamine
(G),
and
Cu(II)
nanoparticles,
a
nanocomposite
was
prepared.
Then,
the
prepared
checked
out
by
various
techniques
such
as
X-ray
diffraction,
Fourier
transform
infrared,
Raman
spectrum,
scanning
electron
microscopy,
energy-dispersive
X-ray,
results
showed
that
desired
structure
successfully
Also,
three-electrode
system
utilized
to
measure
electrochemical
properties.
The
specific
capacitance
of
Cu-doped
oxide-glutamine
(Cu/G-GO)
1838
F
g–1
obtained
in
1
M
H2SO4
aqueous
electrolyte
under
current
density
3
A
g–1.
Moreover,
85.43%
initial
electrode
preserved
after
5000
cycles
at
20
(10,000
cycles,
73.12%).
quantum
layer
distance
GO
G-GO
functional
theory
were
calculated.
