Development
of
highly
active
and
stable
acidic
oxygen
evolution
reaction
catalyst
is
very
important
for
efficient
water
splitting
while
remains
challenging.
Herein,
we
report
a
ordered
RuO2/WO3
inverse
opals
(IOs)
to
address
the
bottleneck
problem
see-saw
relationship
between
activity
stability,
in
which
crystalline
corrosionresistant
WO3
facilitates
electron
transport
stabilizes
RuO2,
whereas
lattice
mismatch-induced
amorphousdominated
RuO2
provides
abundant
unsaturated
coordination
sites
enhance
(OER)
activity.
Consequently,
IOs
demonstrates
outstanding
OER
performance
terms
low
overpotential
180
mV
reach
10
mA·cm–2,
excellent
stability
maintaining
100
hours
continuous
test.
Experimental
characterizations
density
functional
theory
calculations
reveal
that
interface
coupling
can
spin
polarization
electrons
increase
overlaps
electronic
projected
states
Ru
d
orbitals
metal
O
p
intermediates,
facilitating
pathway
switch
from
mechanism
adsorbate
mechanism,
significantly
decreases
energy
barrier
process.
Meanwhile,
rich
vacancies
supports
heterostructures
could
inhibit
over-oxidation
species,
so
as
simultaneously.
Nano Letters,
Год журнала:
2024,
Номер
24(35), С. 10899 - 10907
Опубликована: Авг. 26, 2024
The
oxygen
evolution
reaction
(OER)
performance
of
ruthenium-based
oxides
strongly
correlates
with
the
electronic
structures
Ru.
However,
widely
adopted
monometal
doping
method
unidirectionally
regulates
only
structures,
often
failing
to
balance
activity
and
stability.
Here,
we
propose
an
"elastic
electron
transfer"
strategy
achieve
bidirectional
optimization
Sr,
Cr
codoped
RuO
Chemical Society Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Metastable
materials
are
considered
promising
electrocatalysts
for
clean
energy
conversions
by
virtue
of
their
structural
flexibility
and
tunable
electronic
properties.
However,
the
exploration
synthesis
metastable
via
traditional
equilibrium
methods
face
challenges
because
requirements
high
precise
control.
In
this
regard,
rapid
method
(RSM),
with
efficiency
ultra-fast
heating/cooling
rates,
enables
production
under
non-equilibrium
conditions.
relationship
between
RSM
properties
remains
largely
unexplored.
review,
we
systematically
examine
unique
benefits
various
techniques
mechanisms
governing
formation
materials.
Based
on
these
insights,
establish
a
framework,
linking
electrocatalytic
performance
Finally,
outline
future
directions
emerging
field
highlight
importance
high-throughput
approaches
autonomous
screening
optimal
electrocatalysts.
This
review
aims
to
provide
an
in-depth
understanding
electrocatalysts,
opening
up
new
avenues
both
fundamental
research
practical
applications
in
electrocatalysis.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 8, 2025
Abstract
For
oxygen
evolution
reaction
(OER)
in
proton
exchange
membrane
water
electrolyzer
(PEMWE),
iridium
(Ir)
remains
the
primary
active
component
catalysts,
but
its
high
cost
and
low
utilization
efficiency
pose
significant
barriers
to
large‐scale
deployment.
Designing
high‐performance
supported
Ir‐based
catalysts
is
of
urgent
necessity.
By
constructing
a
hierarchical
WO
3
@TiN
supporting
material,
an
Ir/WO
catalyst
designed
with
superior
OER
activity
stability.
The
optimized
exhibits
mass
(MA)
up
920.93
mA
mg
Ir
−1
,
over
20
times
that
commercial
IrO
2
.
Experimental
evidences
confirm
facilitated
vacancies
induced
by
diffusion
Ti
at
interfaces.
electrode
assembly
(MEA)
fabricated
anode
(0.3
cm
−2
)
can
operate
1.0
A
merely
1.60
V
(70
°C),
durable
operation
for
200
h.
Theoretical
calculations
reveal
doping
atoms
lattice
promotes
formation
vacancy,
which
optimize
surface
electronic
structure
on
lower
energy
barrier
*OOH
formation,
leading
boosted
activity.
This
work
not
only
introduces
new
strategies
support
design
also
shows
their
great
potential
practical
applications.
