Chalcogenide Letters,
Journal Year:
2024,
Volume and Issue:
21(7), P. 499 - 511
Published: Aug. 5, 2024
With
society's
rapid
progress,
there
is
an
increasing
need
for
electricity
among
individuals,
but
the
prevailing
source
of
still
mainly
obtained
through
burning
nonrenewable
fossil
fuels,
which
are
not
renewable
and
pose
serious
environmental
hazards.
Lithium-ion
batteries
used
widely
excellent
rechargeable
capabilities
high
energy
density.
Recently,
researchers
have
become
increasingly
interested
in
transition
metal
sulfides
owing
to
their
cost-effectiveness
remarkable
specific
capacity.
However,
commercialization
has
been
hindered
by
expansion
material
volume
low
electrical
conductivity
during
charging
discharging.
We
successfully
designed
synthesized
MoS2
nanosheets
loaded
on
carbon
spheres
with
a
3D
hollow
structure
starting
from
SiO2
as
template.
Due
doping
materials
particular
structures,
optimal
C/MoS2-0.3
nanocomposites
exhibit
electrochemical
performance.
Following
exposure
over
900
cycles
at
0.5
A
g-1
ampere
density,
exhibited
exceptional
958.50
mAh
reversible
capacity,
demonstrating
ACS Applied Energy Materials,
Journal Year:
2023,
Volume and Issue:
7(3), P. 1037 - 1050
Published: Dec. 12, 2023
Molybdenum
disulfide
(MoS2)
with
metallic
1T
phase
is
perceived
as
the
possible
alternative
to
benchmark
Pt
in
hydrogen
evolution
reaction
(HER).
The
dominance
prevailing
density
of
active
sites,
electrical
conductivity,
and
hydrophilicity
improves
HER
kinetics.
In
construction
MoS2,
2H
stable
due
its
thermodynamic
stability
over
phase.
On
other
hand,
Li+
ion
intercalation/exfoliation
technique
converts
a
metastable
Pyrophoric
ion,
an
organic
solvent,
suffers
from
sluggish
kinetics
still
setback
attaining
conversion.
Based
on
these
investigations,
herein,
for
very
first
time,
such
conversion
was
reached
by
soaking
2H-MoS2
only
polar
solvents.
Among
various
solvents,
extended
(70.1%)
attained
N,N-dimethylformamide
(DMF)
when
immersed
90
days,
i.e.,
DMF-90D
catalyst.
Upon
prolonged
immersion,
electrostatic
forces
between
solvent
occur,
van
der
Waals
layers
MoS2
are
diminished.
Under
conditions,
molecules
intercalate
into
induce
functional
theory
(DFT)
study
further
verified
that
interactions
present
no
charge
transfer
emerged.
acidic
HER,
catalyst
secure
10
mA
cm–2
required
263
mV
lower
Tafel
slope
value
(59
mV/dec).
This
facile
greener
approach
can
be
impressive
2D
materials
future.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(11), P. 804 - 804
Published: Nov. 9, 2024
Molybdenum
disulfide
(MoS2)
has
garnered
significant
interest
as
an
auspicious
catalytic
material
for
the
hydrogen
evolution
reaction
(HER).
Here,
MoS2
nanostructures
are
synthesized
using
hydrothermal
method
with
ammonium
molybdate
tetrahydrate
((NH4)6Mo7O24∙4H2O)
Mo
source;
thioacetamide
(CH3CSNH2)
reducing
agent
and
S
nonylphenols
9,
40,
polysorbate
80
surfactants.
The
impact
of
different
nonionic
surfactants
on
materials
is
comprehensively
investigated.
Moreover,
fine
structure
was
characterized
Fourier
transform
infrared
spectroscopy
(FTIR),
X-ray
diffraction
(XRD),
energy-dispersive
(EDX),
Raman
spectroscopy,
scanning
electron
microscopy
(SEM),
transmission
(TEM).
HER
characteristics
composites
assessed
through
electrochemical
experiments,
including
linear
sweep
voltammetry
chronoamperometry
measurements.
Among
prepared
specimens,
MoS2/NP
9
exhibits
best
electrocatalytic
performance
in
a
neutral
medium.
Furthermore,
240
mV
required
to
reach
current
density
10
mAcm−2.
