Stabilizing bulk lattice oxygen via the enhancement of Ir/Ru–O bonds for stable oxidation catalysts in acidic media
Applied Catalysis B Environment and Energy,
Год журнала:
2025,
Номер
unknown, С. 125219 - 125219
Опубликована: Март 1, 2025
Язык: Английский
Recent Research on Iridium‐Based Electrocatalysts for Acidic Oxygen Evolution Reaction from the Origin of Reaction Mechanism
Small,
Год журнала:
2024,
Номер
20(43)
Опубликована: Июнь 28, 2024
As
the
anode
reaction
of
proton
exchange
membrane
water
electrolysis
(PEMWE),
acidic
oxygen
evolution
(OER)
is
one
main
obstacles
to
practical
application
PEMWE
due
its
sluggish
four-electron
transfer
process.
The
development
high-performance
OER
electrocatalysts
has
become
key
improving
kinetics.
To
date,
although
various
excellent
have
been
widely
researched,
Ir-based
nanomaterials
are
still
state-of-the-art
electrocatalysts.
Hence,
a
comprehensive
and
in-depth
understanding
mechanism
crucial
for
precise
optimization
catalytic
performance.
In
this
review,
origin
nature
conventional
adsorbate
(AEM)
derived
volcanic
relationship
on
processes
summarized
some
strategies
based
AEM
introduced.
further
investigate
strategy
electrocatalysts,
several
unconventional
mechanisms
including
dual-site
lattice
mediated
mechanism,
their
applications
introduced
in
detail.
Thereafter,
active
species
at
classified
into
surface
Ir
O
species.
Finally,
future
direction
prospect
put
forward.
Язык: Английский
Recent Progress in Balancing the Activity, Durability, and Low Ir Content for Ir‐Based Oxygen Evolution Reaction Electrocatalysts in Acidic Media
Small,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 23, 2024
Proton
exchange
membrane
(PEM)
electrolysis
faces
challenges
associated
with
high
overpotential
and
acidic
environments,
which
pose
significant
hurdles
in
developing
highly
active
durable
electrocatalysts
for
the
oxygen
evolution
reaction
(OER).
Ir-based
nanomaterials
are
considered
promising
OER
catalysts
PEM
due
to
their
favorable
intrinsic
activity
stability
under
conditions.
However,
cost
limited
availability
limitations.
Consequently,
numerous
studies
have
emerged
aimed
at
reducing
iridium
content
while
maintaining
durability.
Furthermore,
research
on
mechanism
of
has
garnered
widespread
attention
differing
views
among
researchers.
The
recent
progress
balancing
activity,
durability,
low
is
summarized
this
review,
a
particular
focus
effects
catalyst
morphology,
heteroatom
doping,
substrate
introduction,
novel
structure
development
performance
from
four
perspectives.
Additionally,
mechanistic
discussed,
both
theoretical
experimental
approaches
elucidate
mechanism.
Finally,
perspectives
future
developments
presented.
Язык: Английский
Nest‐Scheme RuIrLa Nanocrystals by NP‐to‐NP Oriented Assembly: Coherent Strain Fields‐Driven Band Structure Splitting for Efficient Acidic Water Oxidation
Small,
Год журнала:
2024,
Номер
20(43)
Опубликована: Июнь 26, 2024
Atomic
substructure
engineering
provides
new
opportunities
for
the
designing
newly
and
efficient
catalysts
with
diverse
atom
ensembles,
trimmed
electron
bands,
way-out
coordination
environments,
creating
unique
contributing
to
concertedly
catalyze
water
oxidation,
which
is
of
great
significance
proton
exchange
membrane
electrolysis
(PEMWE).
Herein,
nest-scheme
RuIrLa
nanocrystals
dense
coherent
interfaces
as
built-in
substructures
are
firstly
fabricated
by
using
commercial
ZnO
particles
acid-removable
templates,
through
a
La-stabilized
epitaxial
growth
nanoparticles
(NPs).
The
obtained
nests
exhibit
low
overpotential
198
mV
at
10
mA
cm
Язык: Английский
Lanthanum-based nanomaterials for oxygen evolution reaction
Journal of Rare Earths,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 1, 2024
Язык: Английский
Stabilizing Bulk Lattice Oxygen Via the Enhancement of Ir/Ru–O Bonds for Stable Oxidation Catalysts in Acidic Media
Опубликована: Янв. 1, 2025
Язык: Английский
Overcoming Interfacial Hydrogen Site-Blocking during Alkaline Formate Oxidation: Insights from Lattice-Compressed PdZr/C Catalysts
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 27, 2025
Improving
the
electrocatalytic
conversion
of
formate
in
alkaline
solutions
is
crucial
for
commercial
application
fuel
cells.
However,
palladium-based
catalysts
used
oxidation
reactions
(FOR)
face
challenges
due
to
strong
adsorption
hydrogen
intermediates,
resulting
lower
catalytic
efficiency
environments.
Herein,
we
prepared
a
PdZr/C
catalyst
aimed
at
employing
doping-induced
strain
strategy
reduce
binding
energy
palladium
and
release
more
active
sites
formate.
Through
density
functional
theory
calculations
experimental
investigations,
find
that
lattice
compression
induced
by
Zr
doping
regulates
electronic
structure
Pd.
Specifically,
incorporation
dopant
shifts
d-band
center
Pd
downward,
weakening
sites.
This
adjustment
promotes
desorption
thus
accelerating
FOR
kinetics
alleviating
site-blocking
effect.
As
result,
exhibited
2.4-fold
increase
activity
compared
conventional
Pd/C
catalyst.
It
also
achieved
peak
potential
delivered
significantly
higher
current
1917
mA
mg–1.
These
findings
highlight
critical
role
tuning
properties
offer
valuable
insights
into
design
high-performance
electrocatalysts
technologies.
Язык: Английский
Atomic Size Misfit for Electrocatalytic Small Molecule Activation
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 26, 2025
Abstract
The
efficient
activation
of
small
molecules
such
as
H
2
O,
CO
,
and
N
for
sustainable
fuel
chemical
production
is
a
critical
challenge
in
catalysis,
owing
to
the
strong
covalent
bonds
(O─H,
C═O,
N≡N)
that
resist
easy
cleavage.
Catalysts
are
pivotal
overcoming
these
energy
barriers,
enhancing
reaction
rates
selectivity.
strategy
atomic
size
misfit,
which
introduces
structural
defects
like
vacancies,
grain
boundaries,
dislocations,
has
gained
attention
promising
approach
optimize
catalytic
activity.
This
modulates
interactions,
alters
electronic
structures,
enhances
reactivity
active
sites,
facilitating
molecules.
Moreover,
this
holds
significant
potential
reducing
environmental
impact
by
enabling
more
processes.
However,
current
research
on
misfit
remains
fragmented,
lacking
unified
framework.
A
comprehensive
review
essential
consolidate
its
mechanisms,
applications,
integration
with
other
tuning
methods
alloying
doping.
aims
provide
valuable
insights
into
design
next‐generation
catalysts,
guiding
future
developments
conversion
technologies
offering
pathways
practical,
scalable
applications
molecule
activation.
Язык: Английский
Textured RuIrAgMnO2 Oxides With Preferentially Orientated (110) Facet by Concerted Shaping of Ag and Mn for Stable Acid Water Oxidation
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 29, 2024
Abstract
Entropy‐based
polymetallic
oxides
with
configurational
entropy,
structure
flexibility,
and
crystallographic
orientation
have
been
regarded
as
promising
catalysts
for
oxygen
evolution
reaction
(OER),
due
to
their
electronic
energy
band
occupation,
composition
ligand
stabilization,
“cocktail”
effect.
Herein,
a
rutile
RuIrAgMnO
2
oxide
an
along
the
(110)
facets
is
first
fabricated
by
low‐temperature
directional
co‐pyrolysis
strategy
of
metal
salts
on
Ti
foil
at
300
°C.
The
quaternary
exhibits
texture
coefficient
1.13
facet,
resulting
from
concerted
shaping
Ag
Mn
components
presenting
vibrational
entropy
R
(R
gas
content).
In
0.5
m
H
SO
4
,
it
displays
overpotential
171
mV
10
mA
cm
−2
OER,
running
voltage
340
h
100
.
remarkably
improved
performance
can
be
associated
presence
preferred
in‐plane
strains,
which
activate
stabilize
OER
process
via
reconstruction.
More
interestingly,
preferential
prevents
diffusion
or
dissolution
active
ions
caused
entropy‐dependent
barriers,
ensuring
long‐term
stability.
This
work
pave
way
entropy‐driven
optimal
structures,
disrupting
trade‐off
between
activity
stability
in
water
oxidation.
Язык: Английский