Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 21, 2025
Abstract
Engineering
the
electronic
configuration
and
intermediates
adsorption
behaviors
of
Platinum‐based
catalysts
is
crucial
for
improving
oxygen
reduction
reaction
(ORR)
kinetics
at
cathode
in
proton
exchange
membrane
fuel
cells
(PEMFCs),
yet
it
remains
an
enormous
challenge.
Herein,
interface‐induced
dislocation
tactic
through
Pt/PtCu
heterogeneous
formation
Pt@PtCu
nanowires
composites
(Pt@PtCu
NWs)
efficient
ORR
reported.
Theoretical
studies
have
proven
that
driven
by
a
hybrid
interface
could
alter
electron
redistribution
downshift
d‐band
Pt,
thus
facilitating
desorption
oxygen‐containing
species
achieving
outstanding
performance.
Specifically,
as‐prepared
NWs
deliver
exceptional
properties
with
half‐wave
0.940
V.
Moreover,
mass
activity
(MA)
reaches
1.17
A
mg
Pt
−1
0.9
V,
which
4.18
10.64
times
higher
than
(0.27
)
commercial
Pt/C
(0.11
).
Most
importantly,
also
prove
remarkable
structural
stability
only
14.5%
decrease
MA
compared
to
58.9%
after
durability
test.
Overall,
this
strategy
center
tuning
induced
hybrid‐interface‐driven
provides
promising
avenue
designing
high‐efficiency
electrocatalysts.
ACS Nano,
Год журнала:
2024,
Номер
18(29), С. 19268 - 19282
Опубликована: Июль 9, 2024
Catalytic
additives
able
to
accelerate
the
lithium–sulfur
redox
reaction
are
a
key
component
of
sulfur
cathodes
in
batteries
(LSBs).
Their
design
focuses
on
optimizing
charge
distribution
within
energy
spectra,
which
involves
refinement
and
occupancy
electronic
density
states.
Herein,
beyond
distribution,
we
explore
role
spin
configuration
polysulfide
adsorption
properties
catalytic
activity
additive.
We
showcase
importance
this
parameter
by
generating
polarization
through
defect
engineering
approach
based
introduction
Co
vacancies
surface
CoSe
nanosheets.
show
change
electron
state
increasing
number
unpaired
electrons
with
aligned
spins.
This
local
rearrangement
enhances
adsorption,
reducing
activation
Li–S
reactions.
As
result,
more
uniform
nucleation
growth
Li2S
an
accelerated
liquid–solid
conversion
LSB
obtained.
These
translate
into
exhibiting
capacities
up
1089
mA
h
g–1
at
1
C
0.017%
average
capacity
loss
after
1500
cycles,
5.2
cm–2,
0.16%
decay
per
cycle
200
cycles
high
loading
cells.
Abstract
Developing
high
electroactivity
ruthenium
(Ru)‐based
electrocatalysts
for
pH‐universal
hydrogen
evolution
reaction
(HER)
is
challenging
due
to
the
strong
bonding
strengths
of
key
Ru─H/Ru─OH
intermediates
and
sluggish
water
dissociation
rates
on
active
Ru
sites.
Herein,
a
semi‐ionic
F‐modified
N‐doped
porous
carbon
implanted
with
nanoclusters
(Ru/FNPC)
introduced
by
hydrogel
sealing‐pyrolying‐etching
strategy
toward
highly
efficient
generation.
Benefiting
from
synergistic
effects
between
(Ru
NCs)
hierarchically
F,
N‐codoped
support,
such
synthesized
catalyst
displays
exceptional
HER
reactivity
durability
at
all
pH
levels.
The
optimal
8Ru/FNPC
affords
ultralow
overpotentials
17.8,
71.2,
53.8
mV
current
density
10
mA
cm
−2
in
alkaline,
neutral,
acidic
media,
respectively.
Density
functional
theory
(DFT)
calculations
elucidate
that
F‐doped
substrate
support
NCs
weakens
adsorption
energies
H
OH
sites
reduces
energy
barriers
elementary
steps
HER,
thus
enhancing
intrinsic
activity
accelerating
kinetics.
This
work
provides
new
perspectives
design
advanced
ultrafine
metal
conversion
applications.
Abstract
Construction
of
core–shell
structured
electrocatalysts
with
a
thin
noble
metal
shell
is
an
effective
strategy
for
lowering
the
usage
and
improving
electrocatalytic
properties
because
structure‐induced
geometric
electronic
effects.
Here,
synthesis
novel
nanocatalyst
consisting
amorphous
Pd
crystalline
PdCu
core
its
significantly
improved
both
formic
acid
oxidation
oxygen
reduction
reactions
are
shown.
The
electrocatalyst
exhibits
4.1
times
higher
catalytic
peak
current
density
better
stability
in
compared
to
nanoalloy
catalyst
Commercial
Pd–C
catalyst.
An
excellent
performance
also
observed
reaction.
Computational
calculation
results
reveal
that
tuning
state
by
Cu
weaken
binding
strength
surface
Pd─O
bonds,
leading
bond
elongation
facilitate
breaking.
As
result,
activity
enhanced.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 4, 2025
Electrocatalysts
can
efficiently
convert
earth-abundant
simple
molecules
into
high-value-added
products.
In
this
context,
heterostructures,
which
are
largely
determined
by
the
interface,
have
emerged
as
a
pivotal
architecture
for
enhancing
activity
of
electrocatalysts.
review,
atomistic
understanding
heterostructured
electrocatalysts
is
considered,
focusing
on
reaction
kinetic
rate
and
electron
configuration,
gained
from
both
empirical
studies
theoretical
models.
We
start
fundamentals
microkinetic
model,
adsorption
energy
theory,
electric
double
layer
model.
The
importance
heterostructures
to
accelerate
electrochemical
processes
via
modulating
configuration
interfacial
reactive
microenvironment
highlighted,
considering
rectification,
space
charge
region,
built-in
field,
synergistic
interactions,
lattice
strain,
geometric
effect.
conclude
review
summarizing
challenges
perspectives
in
field
electrocatalysts,
such
determination
transition
state
energy,
their
dynamic
evolution,
refinement
approaches,
use
machine
learning.
Abstract
Acquiring
a
highly
efficient
electrocatalyst
capable
of
sustaining
prolonged
operation
under
high
current
density
is
paramount
importance
for
the
process
electrocatalytic
water
splitting.
Herein,
Fe‐doped
phosphide
(Fe‐Ni
5
P
4
)
derived
from
NiFc
metal−organic
framework
(NiFc‐MOF)
(Fc:
1,1′‐ferrocene
dicarboxylate)
shows
catalytic
activity
overall
splitting
(OWS).
Fe‐Ni
||Fe‐Ni
exhibits
low
voltage
1.72
V
OWS
at
0.5
A
cm
−2
and
permits
stable
2700
h
in
1.0
m
KOH.
Remarkably,
can
sustain
robust
an
extra‐large
1
1170
even
alkaline
seawater.
Theoretical
calculations
confirm
that
Fe
doping
simultaneously
reduces
reaction
barriers
coupling
desorption
(O
*
→OOH
,
OOH
→O
2
oxygen
evolution
(OER)
regulates
adsorption
strength
intermediates
(H
O
H
hydrogen
(HER),
enabling
to
possess
excellent
dual
functional
activity.
This
study
offers
valuable
reference
advancement
durable
electrocatalysts
through
regulation
coordination
frameworks,
with
significant
implications
industrial
applications
energy
conversion
technologies.
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(16), С. 5147 - 5156
Опубликована: Янв. 1, 2024
Co
2
P
nanoparticles
and
Fe–N
x
species
were
anchored
on
N,P
codoped
hollow
carbonized
spheres
by
structural
active
site
engineering.
This
work
provides
a
facile
strategy
for
the
construction
of
bifunctional
electrocatalysts
Zn–air
batteries.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
64(1)
Опубликована: Сен. 3, 2024
Dual-atom
catalysts
(DACs)
have
garnered
significant
interest
due
to
their
remarkable
catalytic
reactivity.
However,
achieving
atomically
precise
control
in
the
fabrication
of
DACs
remains
a
major
challenge.
Herein,
we
developed
straightforward
and
direct
sublimation
transformation
synthesis
strategy
for
dual-atom
Fe
(Fe
