Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 12, 2024
Abstract
Metal
selenides
with
excellent
electronic
conductivity
and
high
theoretical
capacity
present
great
superiority
as
alternative
anodes
in
sodium
ion
batteries
(SIBs).
However,
they
face
huge
challenges
such
severe
polyselenides
shuttling
slow
diffusion
kinetics.
To
address
these
issues,
entropy
regulation
strategy
is
employed
to
optimize
the
presence
of
Se
vacancies
successfully
prepared
NiCoFeMnCr/CNTs
(HE‐MSe/CNTs)
rich
vacancies.
This
material
enhances
adsorption
energy
for
shuttle
compounds
like
Na
2
4
,
effectively
limiting
dissolution
improving
kinetics
ions
well
structural
thermodynamics
x
HE‐MSe/CNTs
phase.
Experimental
results
indicate
that
achieve
a
highly
reversible
storage
process
involving
intercalation
conversion
reaction
mechanisms.
enables
superior
rate
capability
400.4
mAh
g
−1
at
current
density
5
A
long‐term
durability
90%
retention
after
1000
cycles
1
.
Therefore,
utilizing
customize
vacancy
formation
provides
new
insights
methods
enhancing
performance
SIB
anodes.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
Abstract
Oxygen
evolution
reaction
(OER)
is
a
cornerstone
of
various
electrochemical
energy
conversion
and
storage
systems,
including
water
splitting,
CO
2
/N
reduction,
reversible
fuel
cells,
rechargeable
metal‐air
batteries.
OER
typically
proceeds
through
three
primary
mechanisms:
adsorbate
mechanism
(AEM),
lattice
oxygen
oxidation
(LOM),
oxide
path
(OPM).
Unlike
AEM
LOM,
the
OPM
via
direct
oxygen–oxygen
radical
coupling
that
can
bypass
linear
scaling
relationships
intermediates
in
avoid
catalyst
structural
collapse
thereby
enabling
enhanced
catalytic
activity
stability.
Despite
its
unique
advantage,
electrocatalysts
drive
remain
nascent
are
increasingly
recognized
as
critical.
This
review
discusses
recent
advances
OPM‐based
electrocatalysts.
It
starts
by
analyzing
mechanisms
guide
design
Then,
several
types
novel
materials,
atomic
ensembles,
metal
oxides,
perovskite
molecular
complexes,
highlighted.
Afterward,
operando
characterization
techniques
used
to
monitor
dynamic
active
sites
examined.
The
concludes
discussing
research
directions
advance
toward
practical
applications.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 1, 2025
Interface
design
plays
a
pivotal
role
in
developing
high-performance
photocatalysts
for
NO
oxidation.
In
this
work,
hierarchical
rGO-integrated
NH2-MIL125(Ti)/TiO2
photocatalyst
was
constructed
using
combined
liquid-phase
and
solid-phase
microwave
synthesis
approach.
The
process
enabled
the
precise
deposition
of
NH2-MIL125(Ti)
on
graphene
oxide
(GO),
forming
strong
interfacial
bonds,
while
thermal
shock
(SMTS)
transformed
GO
into
rGO
induced
formation
TiO2
nanoparticles.
This
structure
established
an
efficient
electron
transport
pathway,
promoting
charge
separation
directional
transfer
to
activate
O2
generate
superoxide
radicals
(•O2–)
as
primary
reactive
species.
resulting
achieved
remarkable
oxidation
performance,
with
81.2%
removal
efficiency
NO3–
selectivity
98.5%
under
simulated
sunlight.
study
highlights
potential
microwave–driven
interface
engineering
innovative
environmentally
sustainable
applications.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 19, 2024
Abstract
Acidic
overall
water‐splitting
driven
by
consistent
electricity
is
an
efficient
and
economical
method
for
producing
green
hydrogen.
However,
developing
highly
active
durable
bifunctional
electrocatalysts
both
hydrogen
oxygen
evolution
reactions
(HER
OER)
in
acidic
conditions
remains
a
challenge.
Here,
single‐atom
Mn
sites
are
introduced
into
Ru/RuO₂
heterostructures
(Mn(SAs)‐Ru/RuO
2
)
as
electrocatalysts,
achieving
low
overpotentials
of
39
158
mV
at
10
mA
cm
−2
HER
OER,
respectively,
while
maintaining
long‐term
durability
over
500
h
1.47
V
0.5
m
H
SO
4
.
It
outperforms
most
previously
reported
electrocatalysts.
Theoretical
calculations
show
that
the
charge
redistribution
caused
single‐site
dopants
optimizes
adsorption
OOH
*
Ru
sites,
significantly
boosting
electrochemical
kinetics
OER
HER.
This
work
presents
effective
metal
doping
strategy
to
optimize
distribution
water‐splitting.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 13, 2025
Metal–support
interactions
(MSI)
play
a
crucial
role
in
enhancing
the
catalytic
activity
and
stability
of
metal
catalysts
by
establishing
stable
metal-oxide
interface.
However,
precisely
controlling
MSI
at
atomic
scale
remains
significant
challenge,
as
how
to
construct
an
optimal
is
still
not
fully
understood:
Both
insufficient
excessive
showed
inferior
performance.
In
this
study,
we
propose
finely
tuning
using
temporal-precise
transient
high-temperature
pulse
heating.
Using
Pt/CeO2
model
system,
systematically
investigate
variations
duration
atmosphere
influence
reconstruction
metal–support
interface
MSIs.
This
leads
formation
two
distinct
types
MSI:
(1)
strong
(SMSI,
Pt@CeO2)
(2)
reactive
(RMSI,
Pt5Ce@CeO2),
each
with
unique
compositions,
structures,
electrochemical
behaviors.
Notably,
Pt5Ce@CeO2
RMSI
exhibits
remarkable
performance
alkaline
hydrogen
evolution,
showing
overpotential
−29
mV
operation
for
over
300
h
−10
mA·cm–2.
Theoretical
studies
reveal
that
alloying
Pt
Ce
form
Pt5Ce
modifies
electronic
structure
Pt,
shifting
d-band
center
optimize
adsorption
dissociation
intermediates,
thereby
reducing
reaction
energy
barrier.
Moreover,
intimate
interaction
CeO2
further
improves
stability.
Our
strategy
enables
precise,
stepwise,
controllable
regulation
MSIs,
providing
insights
development
highly
efficient
durable
heterostructured
wide
range
applications.
