Abstract
This
study
investigates
a
unique
and
energy‐efficient
BaS3:Sb2S3:GdS
2
nanocomposite
chalcogenide
system
that
was
made
using
single
source
dithiocarbamate
precursor
route.
The
produced
metallic
sulfide
has
an
average
crystallite
size
of
17.38
nm
small
band
gap
3.76
eV.
An
examination
functional
groups
revealed
the
existence
several
linkages,
including
metal
bond.
Morphologically,
BaS
3
:Sb
S
:GdS
appeared
as
elongated
rods
showing
greater
surface
area
for
electrochemical
activity.
By
constructing
nickel
foam
electrode
covering
it
with
slurry
,
charge‐storing
behavior
assessed.
Prepared
exhibited
auspicious
electrical
charge
storage
capacities
specific
capacitance
reaching
upto
633.32
F
g
−1
.
These
findings
suggest
there
is
significant
amount
potential
energy
in
electrode.
also
reduced
series
resistance
(
R
s
)
=
0.31
Ω
according
to
impedance
experiments,
power
density
9109.16
W
kg
In
terms
electrocatalysis,
oxygen
production
overpotential
corresponding
Tafel
slope
334
mV
366
dec
whereas
hydrogen
were
229
175
correspondingly.
Energy Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 7, 2025
MXenes
have
gained
increasing
attention
due
to
their
unique
advantages,
including
exceptional
electrical
conductivity,
tunable
layer
structures,
and
controllable
interfacial
chemistry.
This
study
addresses
these
limitations
by
incorporating
niobium
metal–organic
frameworks
(Nb‐MOF)
onto
vanadium
carbide
MXene
(V
2
CT
x
)
surfaces,
enhancing
energy
storage
electrochemical
water‐splitting
performance.
Additionally,
graphene
quantum
dots
(GQDs)
serve
as
dopants,
significantly
the
specific
surface
area
charge
capacity.
The
optimized
Nb‐MOF/V
@GQDs
heterostructure
exhibits
a
low
hydrogen
evolution
reaction
(HER)
overpotential
of
90.54
mV
at
10
mA
cm
−2
,
with
Tafel
slope
103.45
dec
−1
indicating
enhanced
transfer
kinetics.
For
applications,
asymmetric
@GQDs//AC
device
achieves
high
capacity
320
C
g
2.0
A
an
density
(
E
d
59
Wh
kg
power
P
1800
W
while
maintaining
81.2%
retention
87.5%
Coulombic
efficiency
after
12
000
cycles.
These
findings
demonstrate
synergistic
effect
Nb‐MOF
V
further
GQDs,
establishing
composite
promising
material
for
next‐generation
HER.
Next Materials,
Год журнала:
2023,
Номер
2, С. 100081 - 100081
Опубликована: Дек. 20, 2023
Calumnar
basalt
structure-based
nanorods
of
Bi2S3
nanomaterial
have
been
synthesized
via
hydrothermal
processes.
Through
powder
X-ray
diffraction
and
Rietveld
refinement
analysis,
the
single
phase
orthogonal
structural
nature
nanoparticle
were
confirmed,
surface
was
examined
by
a
scanning
electron
microscope,
which
revealed
that
has
pentagonal
top
is
calumnar
nanorod
type.
For
measurement
length
width
nanorods,
an
image
analysis
tool
employed,
energy
storage
activities
this
investigated
CV
GCD
studies.
It
reveals
specific
capacitance
material
through
ranges
from
3.20
to
5.28
farad
/g,
concerning
it
varies
0.84
1.128
F/g
Energy
density
0.152–0.20
V2,
power
109
1098
FV2/g.
Stability
attained
at
0.237
volts
estimated
4.0117
mF
identified
with
0.8
R2
value
ESI
study
for
nanoparticle.
Heliyon,
Год журнала:
2023,
Номер
9(11), С. e21120 - e21120
Опубликована: Окт. 20, 2023
The
novel
co-precipitation
technique
has
been
employed
to
create
the
manganese
ferrite
nanoparticle.
prepared
sample
was
annealed
for
various
temperatures
400
°C,
600
°C
and
700
°C.
Based
on
TG/DT
analysis
optimal
temperature
found
be
further
additional
performed
at
Their
morphology
properties
were
determined
using
SEM,
HR-TEM,
EDX,
FTIR,
XPS,
BET,
CV
techniques.
Using
X-ray
diffraction
technique,
sample's
structural
characteristics
demonstrated.
SEM
as
well
HR-TEM
images
showed
nanoparticles
had
a
roughly
spherical
shape.
EDX
confirmed
presence
of
elements
Fe,
O,
Mn
in
sample;
there
no
evidence
contamination
by
other
elements.
specific
surface
area
estimated
BET
analysis,
which
provides
details
material's
porosity
area.
binding
energy
XPS
measurements,
provide
composition
chemical
states
individual
By
cyclic
voltammetry,
nanoparticles'
electrochemical
evaluated.
For
reduced
scan
rate
2
mVs-1,
capacitance
value
discovered
341
Fg-1,
confirming
their
suitability
super
capacitor
applications.
