Polymers for Advanced Technologies,
Год журнала:
2025,
Номер
36(4)
Опубликована: Апрель 1, 2025
ABSTRACT
In
our
research,
we
have
introduced
an
innovative
approach
to
preparing
a
composite
material
for
tungsten
diselenide
(WSe
2
)
with
polyvinyl
pyrrolidone
(PVP),
demonstrating
improvement
in
the
performance
of
electrochemical
applications.
The
interaction
between
WSe
and
PVP
serves
multiple
functions,
such
as
acting
surface
stabilizer,
reducing
agent,
dispersant
nanoparticles,
growth
modifier.
This
significantly
enhances
electrolyte
penetration
improves
efficiency
devices
like
supercapacitors.
Our
investigation
unveils
simple
yet
effective
hydrothermal
method
synthesizing
bare
@PVP
composite.
technique
leads
formation
broad
bean‐shaped
nanoflakes,
which
are
evenly
combined
polymer,
resulting
enlarged
nanoflakes
electrode
coated
Ni
foam.
Also,
composite,
when
tested
M
KOH
electrolyte,
achieves
Cs
393.1
F
g
−1
at
current
density
1
A
.
was
more
than
capacitance
electrode,
demonstrated
233.3
Furthermore,
showed
excellent
rate
capability
impressive
cyclic
stability,
retaining
98%
its
initial
after
5000
cycles.
larger
area
reactions,
faster
electron
ion
transport
routes,
improved
electroactive
sites,
and,
most
importantly,
into
structure
major
reasons
performance.
Abstract
In
recent
years,
nanomaterials
exploration
and
synthesis
have
played
a
crucial
role
in
advancing
energy
storage
research,
particularly
supercapacitor
development.
Researchers
diversified
materials,
including
metal
oxides,
chalcogenides,
composites,
as
well
carbon
to
enhance
power
density.
Balancing
density
with
electrochemical
stability
remains
challenging,
driving
intensified
efforts
electrode
materials.
This
review
focuses
on
progress
designing
synthesizing
core–shell
materials
tailored
for
supercapacitors.
The
architecture
offers
advantages
such
increased
surface
area,
redox
active
sites,
electrical
conductivity,
ion
diffusion
kinetics,
specific
capacitance,
cyclability.
explores
the
impact
of
core
shell
specifically
transition
oxides
(TMOs),
behavior.
Metal
oxide
choices,
cobalt
preferred
manganese
shell,
are
discussed.
also
highlights
characterization
techniques
assessing
structural,
morphological,
properties
Overall,
it
provides
comprehensive
overview
ongoing
TMOs‐based
material
research
supercapacitors,
showcasing
their
potential
applications
ranging
from
gadgets
electric
vehicles.
outlines
existing
challenges
future
opportunities
evolving
advancements,
holding
promise
high‐efficiency
devices.
Physical Chemistry Chemical Physics,
Год журнала:
2024,
Номер
26(13), С. 10301 - 10309
Опубликована: Янв. 1, 2024
Transition
metal
dichalcogenides
(TMDs)
are
fascinating
and
prodigious
considerations
in
the
electrochemical
energy
storage
sector
because
of
their
two
dimensional
chemistry
as
well
heterogeneous
characteristics.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(4), С. 4078 - 4091
Опубликована: Фев. 13, 2024
At
present,
supercapacitors
(SC)
based
on
metal–organic
frameworks
(MOFs)
have
gained
a
lot
of
attention
in
energy
storage
and
conversion
applications
because
their
fascinating
properties
such
as
low
densities,
variable
chemical
functions,
high
surface
area,
porosity.
The
manuscript
covers
the
synthesis
bimetallic
MOF
MOF-derived
ferrites
via
chemically
wet
route
heat
treatment
process,
respectively.
prepared
electrode
material
was
utilized
to
construct
asymmetric
supercapacitor
devices.
MnFe2-MOF
exhibits
outstanding
electrochemical
over
derived
MnFe2O4
along
with
reversibility,
fast
kinetics,
charge
transfer
resistance
(2.9
Ω),
an
excellent
specific
capacitance
1226
F
g–1
at
current
density
1
mA
cm–2
superb
cyclic
stability
approximately
90.74%
initial
even
after
5000
subsequent
charge–discharge
cycles.
Additionally,
device
fabricated
confirm
practical
viability
anode
activated
carbon
cathode.
demonstrates
91.87
32.67
Wh
kg–1
power
1000
W
kg–1.
Simultaneously,
(ASC)
unveils
exceptional
(85.25%)
Coulombic
efficiency
(96.81%)
higher
8
10,000
These
perceptible
results
ferrite
nanostructure
can
make
it
significant
for
application
today's
technological
applications.
Advanced Composites and Hybrid Materials,
Год журнала:
2025,
Номер
8(2)
Опубликована: Фев. 27, 2025
Optimizing
the
performance
of
electrode
materials
to
improve
energy
density
supercapacitors
is
focus
current
research.
Construction
and
design
with
complex
yolk-shell
structure,
as
a
supercapacitor
material,
are
great
significance
challenging.
Herein,
self-sacrificing
template
strategy
was
used
construct
uniform
carbon-modified
NiS/NiS2
spheres
using
Ni-based
metal–organic
framework
(Ni-soc-MOF)
precursors.
Especially,
carbon
shells
produced
by
pyrolysis
organic
ligand
can
mechanical
stability
electron
conductivity.
Therefore,
as-obtained
NiS/NiS2@C
nanocomposites
display
high
specific
capacity
(1082
C
g−1at
1
A
g−1)
outstanding
cycling
(85%
retention
after
5000
cycles).
In
addition,
hybrid
device
based
on
nanocomposite
porous
deliver
56.2
Wh
kg−1
at
800
W
kg−1,
while
exhibiting
an
excellent
86%
10,000
charge/discharge
cycles,
demonstrating
promising
potential
via
Ni-soc-MOF-derived
route
in
practical
application.
