Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(23), P. 1911 - 1911
Published: Nov. 28, 2024
This
study
explores
the
hydrogen
generation
potential
via
water-splitting
reactions
under
UV-vis
radiation
by
using
a
synergistic
assembly
of
ZnO
nanoparticles
integrated
with
MoS2,
single-walled
carbon
nanotubes
(SWNTs),
and
crystalline
silicon
nanowires
(SiNWs)
to
create
MoS2-SiNWs-SWNTs@ZnONPs
nanocomposites.
A
comparative
analysis
MoS2
synthesized
through
chemical
physical
exfoliation
methods
revealed
that
chemically
exfoliated
exhibited
superior
performance,
thereby
being
selected
for
all
subsequent
measurements.
The
nanostructured
materials
demonstrated
exceptional
surface
characteristics,
specific
areas
exceeding
300
m2
g−1.
Notably,
production
rate
achieved
composite
comprising
5%
1.7%
SiNWs,
13.3%
SWNTs
at
an
80%
ZnONPs
base
was
approximately
3909
µmol
h−1g−1
500
nm
wavelength
radiation,
marking
significant
improvement
over
40-fold
relative
pristine
ZnONPs.
enhancement
underscores
remarkable
photocatalytic
efficiency
composites,
maintaining
high
rates
above
1500
even
wavelengths
600
nm.
Furthermore,
these
composites
energy
storage
conversion
applications,
specifically
within
rechargeable
lithium-ion
batteries,
investigated.
Composites,
similar
those
utilized
but
excluding
address
its
limited
theoretical
capacity
electrical
conductivity,
were
developed.
focus
on
utilizing
as
anode
Li-ion
batteries.
strategic
combination
significantly
improved
electronic
conductivity
mechanical
stability
composite.
Specifically,
56%
24%
20%
offered
cyclic
performance
values,
achieving
complete
1000
mA
h
g−1
after
100
cycles
1
These
results
illuminate
dual
utility
not
only
innovative
catalysts
also
advanced
technologies,
showcasing
their
in
contributing
sustainable
solutions.
In
situ
Schiff
base
reaction
is
utilized
to
grow
phthalocyanine
covalent
organic
frameworks
(TFPB-NiPc)
on
carbon
cloth
(CC)
obtain
the
composite
material
TFPB-NiPc@CC,
which
used
as
anode
for
binder
and
conductive
agent
free
Li/Na-ion
batteries
with
enhanced
active
materials
loading.
What
more,
CC
acts
an
excellent
backbone
while
reducing
stacking
effect
of
(Pc-COFs),
enables
TFPB-NiPc
realize
self-exfoliation
during
in
synthesis
process.
This
strategy
shortens
migration
path
Li+,
efficiently
resulting
improving
rate
Li+
electrode.
Consequently,
TFPB-NiPc@CC
electrode
not
only
shows
improved
electrochemical
behaviors
high
capacity
long
cycle
stability
but
also
displays
superior
flexibility
folding
stability.
The
specific
achieved
by
1090.2
mA
h/g
at
200
mA/g,
after
500
cycles,
can
be
maintained
994.5
a
retention
ratio
91.2%,
are
all
much
higher
than
those
Moreover,
stable
cycling
Na-ion
batteries.
strategies
designed
this
work
provide
new
ideas
methods
preparing
practical,
high-performance
flexible
materials.
Small Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 13, 2025
Abstract
Metal
carbides
are
considered
attractive
lithium‐ion
battery
(LIB)
anode
materials.
Their
potential
practical
application,
however,
still
needs
nanostructure
optimization
to
further
enhance
the
Li‐storage
capacity,
especially
under
large
current
densities.
Herein,
a
nanoporous
structured
multi‐metal
carbide
is
designed,
which
encapsulated
in
3D
free‐standing
nanotubular
graphene
film
(MnNiCoFe‐MoC@NG).
This
composite
with
high
surface
area
not
only
provides
more
active
Li
+
storage
sites
but
also
effectively
prevents
agglomeration
or
detachment
of
material
traditional
powder‐based
electrodes.
Moreover,
design
does
require
additional
binders,
conductive
agents,
even
collectors
when
used
as
LIB
anode.
As
result,
MnNiCoFe‐MoC@NG
exhibits
specific
capacity
1129.2
mAh
g
−1
at
2
A
and
maintains
stable
512.9
after
2900
cycles
5
,
higher
than
most
reported
Mo
x
C‐based
anodes.
Furthermore,
superb
low‐temperature
performance
both
0
−20
°C,
These
properties
make
very
promising
fast
charging
applications.
