Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 28, 2024
Abstract
The
high
entropy
alloy
(HEA)
possesses
distinctive
thermal
stability
and
electronic
characteristics,
which
exhibits
substantial
potential
for
diverse
applications
in
electrocatalytic
reactions.
nanosize
of
HEA
also
has
a
significant
impact
on
its
catalytic
performance.
However,
accurately
controlling
synthesizing
small
nanomaterials
remains
challenge,
especially
the
ultrasmall
nanoparticles.
Herein,
we
firstly
calculate
illustrate
size
structure
as
well
adsorption
energies
crucial
intermediates
involved
typical
processes,
such
hydrogen
evolution
reaction
(HER),
oxygen
reduction
(ORR),
CO
2
electroreduction
(CO
RR)
NO
3
−
(NO
RR).
Under
guidance
theoretical
calculations,
synthesize
range
PtRuPdCoNi
nanoparticles
with
adjustable
sizes
(1.7,
2.3,
3.0,
3.9
nm)
using
one‐step
spatially
confined
approach,
without
any
further
treatment.
Experimentally,
smaller
HEAs
is
more
favorable
HER
ORR
performances,
aligning
predictions.
Specifically,
sized
at
1.7
nm
(HEA‐1.7)
endows
16
mV
overpotential
current
density
10
mA
cm
−2
,
yielding
mass
activity
31.9
A
mg
NM
−1
noble
metal
HER,
significantly
outperforming
commercial
Pt/C
catalyst.
This
strategy
can
be
easily
applicable
to
other
reactions
(e.g.
)
attributed
richness
components
adjustability,
presenting
promising
platform
various
advanced
catalysts.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 4, 2025
Abstract
Purposely
optimizing
material
structure
to
reduce
the
energy
change
of
rate‐determining
step
(RDS)
for
promoting
oxygen
evolution
reaction
(OER)
catalytic
performance
is
a
major
strategy
enhance
efficiency
electrocatalytic
water
splitting.
Density
functional
theory
(DFT)
simulations
indicate
that
creating
large
number
defects
on
or
inside
2D
FePS
3
very
beneficial
its
OER,
especially
when
there
are
more
defects,
structural
diversity
surface
conducive
adsorption
and
intermediates.
In
particular,
Co‐doped
surfaces
produce
S
P
expose
metallic
Fe
as
active
sites,
performance,
stability,
significantly
enhanced.
A
facile
efficient
laser‐ablation‐in‐liquid
method
then
designed
combine
Co
with
layered
crystal
.
Amazingly,
laser‐induced
(Fe
0.53
0.46
)PS
sample
exhibits
excellent
OER
an
overpotential
at
288
mV
small
Tafel
slope
58.3
dec
−1
Moreover,
operates
stably
138
h
10
mA
cm
−2
27
100
,
which
shows
stability
far
exceeds
most
catalysts
Fe─Co
system
so
far,
comprehensive
in
first
echelon
transition
metal
catalyst
systems.
This
work
proposes
in‐depth
understanding
mechanism
design
massive
phosphorus
sulfur
vacancies
by
manufacturing
will
shed
new
light
metal‐based
without
any
precious
alternatives.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 28, 2024
Abstract
Dielectric
oxides
with
robust
relaxation
responses
are
fundamental
for
electronic
devices
utilized
in
energy
absorption,
conversion,
and
storage.
However,
the
structural
origins
governing
dielectric
response
remain
elusive
due
to
involvement
of
atomically
complex
compositional
environments.
Herein,
configurational
entropy
is
introduced
as
a
regulatory
factor
precisely
control
heterogeneity
representative
perovskite
oxides.
Through
advanced
electric
field
visualization
studies,
novel
quantitative
relationship
established
between
atomic‐level
disorder‐induced
polarization
macroscopic
properties.
The
results
indicate
that
degree
atomic
delocalization
exhibits
near‐parabolic
trend
increasing
entropy,
reaching
maximum
medium‐entropy
perovskite.
Correspondingly,
vectors
display
significant
asymmetrical
distribution,
thus
greatly
enhancing
angstrom‐scale
polarization.
Then,
it
experimentally
proven
entropy‐driven
can
improve
behavior
characterized
by
broader
frequency
stronger
intensity
electromagnetic
improvements
approximately
160%
413%
compared
structurally
homogeneous
control.
This
study
unveils
correlation
oxides,
offering
perspective
exploring
structure–property
materials.
Inorganic Chemistry Frontiers,
Journal Year:
2024,
Volume and Issue:
11(23), P. 8535 - 8546
Published: Jan. 1, 2024
By
modulating
the
band
center,
Mn-ion
doping
strategy
enhances
electronic
conductivity
and
improves
interaction
with
solvent
groups,
thereby
achieving
high
capacity,
enhanced
kinetics,
long-term
cycling
in
rechargeable
aluminum
batteries.
