Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 24, 2024
Abstract
Hydrogen
peroxide
(H
2
O
)
is
a
high‐value
chemical
widely
used
in
electronics,
textiles,
paper
bleaching,
medical
disinfection,
and
wastewater
treatment.
Traditional
production
methods,
such
as
the
anthraquinone
oxidation
process
direct
synthesis,
require
high
energy
consumption,
involve
risks
from
toxic
substances
explosions.
Researchers
are
now
exploring
photochemical,
electrochemical,
photoelectrochemical
synthesis
methods
to
reduce
use
pollution.
This
review
focuses
on
2‐electron
oxygen
reduction
reaction
(2e
−
ORR)
for
electrochemical
of
H
2,
discusses
how
catalyst
active
sites
influence
adsorption.
Strategies
enhance
selectivity
by
regulating
these
presented.
Catalysts
strong
adsorption
initiate
reactions
weak
*OOH
promote
formation.
The
also
covers
advances
single‐atom
catalysts
(SACs),
multi‐metal‐based
catalysts,
highlights
non‐noble
metal
oxides,
especially
perovskite
their
versatile
structures
potential
2e
ORR.
localized
surface
plasmon
resonance
(LSPR)
effects
performance
discussed.
In
conclusion,
emphasis
placed
optimizing
through
theoretical
experimental
achieve
efficient
selective
production,
aiming
sustainable
commercial
applications.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 23, 2024
Abstract
Mg‐based
hydrogen
storage
materials
have
drawn
considerable
attention
as
the
solution
for
and
transportation
due
to
their
high
density,
low
cost,
safety
characteristics.
However,
practical
applications
are
hindered
by
dehydrogenation
temperatures,
equilibrium
pressure,
sluggish
hydrogenation
(de/hydrogenation)
rates.
These
functionalities
typically
determined
thermodynamic
kinetic
properties
of
de/hydrogenation
reactions.
This
review
comprehensively
discusses
how
compositeization,
catalysts,
alloying,
nanofabrication
strategies
can
improve
performances
materials.
Since
introduction
various
additives
leads
samples
being
a
multiple‐phases
elements
system,
prediction
methods
simultaneously
introduced.
In
last
part
this
review,
advantages
disadvantages
each
approach
discussed
summary
emergence
new
potential
realizing
lower‐cost
preparation,
lower
operation
temperature,
long‐cycle
is
provided.
SusMat,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 16, 2025
ABSTRACT
High‐entropy
materials
(HEMs)
possess
unique
properties
that
can
be
tailored
for
specific
performance
characteristics,
making
them
suitable
various
battery
applications.
In
particular,
HEMs
have
shown
significant
promise
in
enhancing
the
electrochemical
of
Prussian
blue
analogues
(PBAs)
across
systems,
including
sodium‐ion,
potassium‐ion,
lithium‐sulfur,
aqueous
zinc‐ion,
and
ammonium‐ion
batteries.
This
article
examines
case
studies
to
explore
how
high‐entropy
strategy
enhances
PBA
performance.
It
also
provides
an
overview
traditional
metal
substitution
methods
modifying
two
main
types
PBAs,
is,
Fe‐based
Mn‐based
electrode
materials.
Additionally,
other
optimization
methods,
such
as
defect
modulation,
surface
modification,
composite
structures,
electrolyte
are
discussed.
Finally,
delves
deeply
into
relationship
between
techniques
from
perspectives
element
design
enhancement,
aiming
provide
comprehensive
theoretical
guidance
readers.
Small,
Journal Year:
2025,
Volume and Issue:
21(7)
Published: Jan. 6, 2025
Abstract
Owing
to
its
abundant
manganese
source,
high
operating
voltage,
and
good
ionic
diffusivity
attributed
3D
Li‐ion
diffusion
channels.
Spinel
LiMn
2
O
4
is
considered
a
promising
low‐cost
positive
electrode
material
in
the
context
of
reducing
scarce
elements
such
as
cobalt
nickel
from
advanced
lithium‐ion
batteries.
However,
rapid
capacity
degradation
inadequate
rate
capabilities
induced
by
Jahn–Teller
distortion
dissolution
have
limited
large‐scale
adoption
spinel
for
decades.
In
this
study,
1.98
Mg
0.005
Ti
Sb
Ce
(HE‐LMO)
with
remarkable
interfacial
structural
cycling
stability
developed
based
on
complex
concentrated
doping
strategy.
The
initial
discharge
retention
HE‐LMO
are
111.51
mAh
g
−1
90.55%
after
500
cycles
at
1
C.
as‐prepared
displays
favorable
stability,
significantly
surpassing
pristine
sample.
Furthermore,
theoretical
calculations
strongly
support
above
finding.
has
higher
more
continuous
density
states
Fermi
energy
level
robust
bonded
electrons
among
Mn─O
atom
pairs.
This
research
contributes
field
high‐entropy
modification
establishes
facile
strategy
designing
manganese‐based
batteries
(LIBs).
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
Multicomponent
Ti-containing
ultra-high
temperature
ceramics
(UHTCs)
have
emerged
as
more
promising
ablation-resistant
materials
than
typical
UHTCs
for
applications
above
2000
°C.
However,
the
underlying
mechanism
of
Ti
improving
ablation
performance
is
still
obscure.
Here,
(Hf,Zr,Ti)B2
coatings
are
fabricated
by
supersonic
atmospheric
plasma
spraying,
and
effects
content
on
under
an
oxyacetylene
flame
investigated.
The
(Hf0.45Zr0.45Ti0.10)B2
coating
shows
superior
resistance
cycling
reliability
at
≈2200°C.
A
functionally
graded
oxide
scale
comprising
outer
dense
layer
fine
granular
formed.
former
a
better
oxygen
barrier
owing
to
fewer
cracks
latter
has
high
strain
tolerance
due
finer
grain
size.
uniform
dissolving
≈4
mol%
in
inner
results
refinement
via
sluggish
diffusion
thus
stress
release.
For
layer,
segregation
nanoscale
leads
metastable
cubic
(Hf,Zr,Ti)O2
local
severe
lattice
distortion,
inhibiting
propagation
cracks.
ions'
unique
enables
strong
with
tolerance,
which
responsible
performance.
This
study
provides
new
insights
into
behavior
multicomponent
UHTCs.
