Catalysts,
Journal Year:
2022,
Volume and Issue:
12(12), P. 1490 - 1490
Published: Nov. 22, 2022
The
Zinc-air
battery
(ZAB)
has
become
a
hot
research
topic
for
nearly
decade
due
to
its
high
energy
densities.
As
an
important
category
of
catalysts
ZAB,
perovskites
have
attracted
extensive
interests
because
their
environmentally
friendly
properties,
cheapness,
and
excellent
electrocatalytic
performances.
This
review
article
discusses
the
mechanistic
analyses
regarding
progress
ZAB.
In
addition,
electrode
manipulation
methods
device
are
also
emphasized.
Finally,
perspectives
given
on
limitations
current
perovskite
ZABs.
We
hope
that
this
will
provide
new
clues
promoting
as
many
energy-storage
conversion
applications
in
future.
Energies,
Journal Year:
2022,
Volume and Issue:
15(14), P. 4964 - 4964
Published: July 6, 2022
Depleting
fossil
fuel
resources
and
anthropogenic
climate
changes
are
the
reasons
for
intensive
development
of
new,
sustainable
technologies
based
on
renewable
energy
sources.
One
most
promising
strategies
is
utilization
hydrogen
as
an
vector.
However,
limiting
issue
large-scale
commercialization
a
safe,
efficient,
economical
method
gas
storage.
In
industrial
practice,
compression
liquefaction
currently
applied;
however,
due
to
required
high
pressure
(30–70
MPa)
low
temperature
(−253
°C),
both
these
methods
intensively
consuming.
Chemical
storage
alternative
it
offers
safe
hydrogen-rich
compounds
under
ambient
conditions.
Although
many
serving
carriers
considered,
some
them
do
not
have
realistic
perspectives
commercialization.
this
review,
three
technologically
advanced
carriers—dimethyl
ether,
methanol,
dibenzyltoluene—are
discussed
compared.
Their
potential
application
in
relation
storage,
transport,
mobility
sectors
analyzed,
taking
into
account
technological
environmental
aspects.
Nanomaterials,
Journal Year:
2022,
Volume and Issue:
12(22), P. 4072 - 4072
Published: Nov. 18, 2022
The
demands
for
alternative
energy
have
led
researchers
to
find
effective
electrocatalysts
in
fuel
cells
and
increase
the
efficiency
of
existing
materials.
This
study
presents
new
nanocatalysts
based
on
two
binary
transition
metal
oxides
(BTMOs)
their
hybrid
with
reduced
graphene
oxide
methanol
oxidation.
Characterization
introduced
three-component
composite,
including
cobalt
manganese
(MnCo2O4),
nickel
(NiCo2O4),
(rGO)
form
MnCo2O4/NiCo2O4/rGO
(MNR),
was
investigated
by
X-ray
diffraction
(XRD),
scanning
electron
microscope
(SEM),
energy-dispersive
(EDX)
analyses.
alcohol
oxidation
capability
MnCo2O4/NiCo2O4
(MN)
MNR
evaluated
reaction
(MOR)
process.
crucial
role
rGO
improving
electrocatalytic
properties
catalysts
stems
from
its
large
active
surface
area
high
electrical
conductivity.
tests
MN
showed
an
adequate
ability
oxidize
methanol.
better
performance
due
synergistic
effect
rGO.
nanocatalysts,
a
maximum
current
density
14.58
24.76
mA/cm2
overvoltage
0.6
0.58
V,
as
well
cyclic
stability
98.3%
99.7%
(at
optimal
concentration/scan
rate
20
mV/S),
respectively,
can
be
promising
inexpensive
options
field
efficient
use
cell
anodes.
Processes,
Journal Year:
2023,
Volume and Issue:
11(3), P. 927 - 927
Published: March 18, 2023
One
important
application
of
polymer/graphene
nanocomposites
is
in
membrane
technology.
In
this
context,
promising
have
been
developed
and
applied
the
production
high-performance
membranes.
This
review
basically
highlights
designs,
properties,
use
nanocomposite
membranes
field
gas
separation
purification.
Various
polymer
matrices
(polysulfone,
poly(dimethylsiloxane),
poly(methyl
methacrylate),
polyimide,
etc.),
reinforced
with
graphene
to
develop
facile
strategies,
such
as
solution
casting,
phase
separation,
infiltration,
self-assembly,
etc.,
employed
design
The
inclusion
polymeric
affects
their
morphology,
physical
permeability,
selectivity,
processes.
Furthermore,
final
properties
are
affected
by
nanofiller
content,
modification,
dispersion,
processing
conditions.
Moreover,
development
nanofibrous
has
introduced
novelty
These
potential
overcome
challenges
arising
from
Hence,
overview
provides
up-to-date
coverage
advances
membranes,
especially
for
applications.
processes
(in
parting
gases)
dependent
upon
variations
structural
techniques
used.
Current
future
opportunities
related
also
discussed.
Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(6), P. 547 - 547
Published: March 20, 2024
Nowadays,
two
of
the
biggest
obstacles
restricting
further
development
methanol
fuel
cells
are
excessive
cost
and
insufficient
catalytic
activity
platinum-based
catalysts.
Herein,
platinum
nanoparticle
supported
graphene
aerogel
(Pt/3DGA)
was
successfully
synthesized
by
a
one-step
hydrothermal
self-assembly
method.
The
loose
three-dimensional
structure
is
stabilized
simple
method,
which
not
only
reduces
compared
to
freeze-drying
technology,
but
also
optimizes
loading
method
nanoparticles.
prepared
Pt/3DGA
catalyst
has
porous
with
highly
cross-linked,
large
specific
surface
area,
even
dispersion
Pt
NPs
good
electrical
conductivity.
It
worth
noting
that
its
438.4
mA/mg
long-term
stability,
consistent
projected
benefits
anodic
systems
in
cells..
Our
study
provides
an
applicable
for
synthesizing
nano
metal
particles/graphene-based
composites.
Electroanalysis,
Journal Year:
2025,
Volume and Issue:
37(4)
Published: April 1, 2025
Graphene
aerogel
(GA),
known
for
their
loose
and
porous
three‐dimensional
structures,
has
been
extensively
studied
applied
in
various
fields
due
to
exceptional
mechanical
strength,
thermal
conductivity,
electrical
properties.
However,
GA
is
usually
made
by
freeze‐drying
method,
which
expensive
time‐consuming.
In
this
study,
a
one‐pot
hydrothermal
synthesis
method
was
proposed
successfully
fabricate
platinum–gold
nanoparticle‐embedded
graphene
aerogels
(PtAu/3DGA).
The
resulting
PtAu/3DGA
material
exhibits
highly
cross‐linked
3D
structure,
large
surface
area,
uniformly
dispersed
metal
nanoparticles,
mainly
contributes
its
outstanding
As
methanol
fuel
cell
catalyst,
achieves
catalytic
activity
of
638.3
mA
mg
−1
maintains
excellent
long‐term
stability.
This
approach
not
only
improves
the
high
cost
limited
performance
platinum‐based
alternatives
but
also
offers
scalable
efficient
fabrication
pathway.
highlights
potential
applications
fields,
including
cells,
supercapacitors,
photocatalysis,
sensors.
work
provides
promising
strategy
development
advanced
materials
with
multifunctional
applications.
