Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 12, 2024
Abstract
Monitoring
the
dynamic
behavior
of
active
species
and
modulating
their
electronic
architecture
are
crucial
for
development
efficient
catalysts.
Here,
a
3D
ordered
multi‐level
porous
Ni
2
P/CeO
heterojunction
catalyst
with
“self‐optimization
effect”
is
strategically
synthesized
oxygen
evolution
reaction
(OER).
This
exhibits
low
overpotential
235
mV
at
20
mA
cm
−2
in
1.0
m
KOH.
During
OER
process,
specifically
undergoes
unique
phase
transition
involving
leaching
P
element,
which
triggers
formation
PO
4
3−
‐NiOOH/CeO
adsorbed
on
surface
reconstructed
product
NiOOH/CeO
.
Density
functional
theory
calculations
reveal
that
CeO
adsorbed‐PO
self‐optimized
structure
essential
minor
factors
enhancing
catalytic
activity,
respectively.
They
collaborate
to
promote
redistribution
electron
density
O,
increasing
d
/
p
‐band
center
difference.
phenomenon
results
optimized
adsorption/desorption
key
intermediates
such
as
*OOH
improved
performance.
Overall,
this
research
highlights
potential
modulation
rational
design
cost‐effective
high‐efficiency
electrocatalysts.
ACS Catalysis,
Journal Year:
2025,
Volume and Issue:
15(3), P. 1795 - 1806
Published: Jan. 17, 2025
The
development
of
highly
active
perovskite-based
catalysts
for
the
oxidation
volatile
organic
chemicals
(VOCs)
has
drawn
a
great
deal
attention.
A-site
defect
regulation
is
found
to
be
effective
improve
catalytic
performance,
but
relationship
between
structure
variation
and
activity
not
been
clearly
unveiled.
Herein,
this
issue
was
interpreted
by
physicochemical
properties
electronic
(O
p-band
center).
An
in
situ
one-step
calcination
method
with
NH4HCO3
addition
adopted
prepare
series
A-site-deficient
LaCoO3
perovskites
(LxCO),
which
were
characterized
XRD,
TEM,
EELS,
ESR,
XPS,
UPS,
H2-TPR,
O2-TPD
test
toward
toluene
oxidation.
displayed
volcano-type
an
amount
NH4HCO3.
determined
reducibility
oxygen
content
accordingly
affected
LxCO.
obtained
results
provide
theoretical
technical
support
design
efficient
VOC
catalysts.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 18, 2025
Abstract
The
seawater
splitting
for
green
hydrogen
production
is
emerging
as
a
key
research
focus
sustainable
energy.
Nevertheless,
the
inherent
complexity
of
seawater,
with
its
diverse
ion
composition
–
especially
chloride
ions,
calcium
and
magnesium
ions
poses
significant
challenges
in
catalyst
design.
Designing
highly
active
electrocatalysts
that
can
resist
corrosion
during
still
challenge.
This
article
presents
an
overview
fundamental
mechanisms
explores
issues
encountered
at
both
cathode
anode
electrode.
then
shifts
to
chlorine
anode,
examining
recent
advances
preventing
strategies.
Notably,
these
design
strategies,
such
anionic
passivation
layers,
corrosion‐resistant
metal
doping,
physical
barrier
situ
phase
transition‐driven
desalination,
decoupled
splitting,
are
comprehensively
investigated,
all
which
aim
enhance
catalytic
stability
splitting.
review
concludes
outlook
on
practical
applications
producing
through
Due
to
the
high
configuration
entropy,
unique
atomic
arrangement,
and
electronic
structures,
high-entropy
materials
are
being
actively
pursued
as
bifunctional
catalysts
for
both
oxygen
reduction
reaction
(ORR)
evolution
(OER)
in
rechargeable
zinc-air
batteries
(ZABs).
However,
a
relevant
strategy
enhance
catalytic
activity
of
is
still
lacking.
Herein,
hole
doping
has
been
employed
enable
perovskite
La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3
effectively
catalyze
ORR
OER.
Hole
experiments
rely
on
substitution
Sr2+
La3+.
The
optimized
La0.7Sr0.3(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3
displays
remarkable
OER,
with
low
potential
difference
0.880
V
between
half-wave
OER
at
10
mA
cm-2,
exceeding
majority
catalysts.
Further
analysis
structures
reveals
that
could
regulate
eg-orbital
filling
transition-metal
cations
perovskites
an
ideal
position
thereby
generate
many
highly
active
sites
promote
redox
oxygen.
assembled
ZAB
targeted
cathode
affords
specific
capacity
774.5
mAh
gZn-1
under
cm-2
durability
period
300
cycles,
comparable
20%Pt/C
+
RuO2
ZAB.
This
work
offers
important
approach
advancement
efficient
ZABs.
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(26), P. 18117 - 18125
Published: Jan. 1, 2024
This
work
reports
a
high-entropy
perovskite
La
0.3
Sr
0.7
(CrMnFeCoNi)
0.2
O
3
as
high-performance
OER
electrocatalyst.
doping
induces
the
formation
of
higher-valence
Cr
6+
,
Mn
4+
Fe
Co
and
Ni
3+
responsible
for
excellent
activity.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 2, 2024
Abstract
Perovskite
oxides
are
considered
highly
promising
candidates
for
oxygen
evolution
reaction
(OER)
catalysts
due
to
their
low
cost
and
adaptable
electronic
structure.
However,
modulating
the
structure
of
without
altering
nanomorphology
is
crucial
understanding
structure‐property
relationship.
In
this
study,
a
simple
plasma
bombardment
strategy
developed
optimize
catalytic
activity
perovskite
oxides.
Experimental
characterization
plasma‐treated
LaCo
0.9
Fe
0.1
O
3
(P‐LCFO)
reveals
abundant
vacancies,
which
expose
numerous
active
sites.
Additionally,
X‐ray
photoelectron
spectroscopy
absorption
fine
analyses
indicate
Co
valence
state
in
P‐LCFO,
likely
presence
these
contributes
an
optimized
that
enhances
OER
performance.
Consequently,
P‐LCFO
exhibits
significantly
improved
activity,
with
overpotential
294
mV
at
current
density
10
mA
cm
−2
,
outperforming
commercial
RuO
2
.
This
work
underscores
benefits
engineering
studying
relationships
developing
oxide
water
splitting.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 22, 2024
Abstract
Perovskite‐type
oxides
are
widely
employed
as
oxygen
evolution
reaction
(OER)
electrocatalysts
due
to
their
tunable
composition,
diverse
structure,
abundant
natural
reserves,
remarkable
stability,
and
low
cost.
The
intrinsic
OER
electrocatalytic
activity
of
these
perovskite
is
generally
enhanced
by
improving
conductivity,
increasing
specific
surface
area,
optimizing
the
adsorption
oxygen‐containing
intermediates.
This
achieved
through
rationally
designed
strategies,
including
compositional
engineering,
defect
hybridization,
regulation.
In
this
review,
recent
advances
in
for
summarized,
with
a
focus
on
exploring
structure‐performance
relationships.
review
provides
brief
introduction
application
OER,
followed
classification
characteristics
oxides.
primary
catalytic
mechanisms,
well‐established
descriptors
discussed.
key
strategies
concentrated
enhancing
activity,
composition
reconstruction.
Finally,
challenges
opportunities
developing
high‐performance
presented.
