The
development
of
advanced
electrolysis
technologies
such
as
anion
exchange
membrane
water
electrolyzer
(AEMWE)
is
central
to
the
vision
a
sustainable
energy
future.
Key
realization
AEMWE
technology
lies
in
exploration
low-cost
and
high-efficient
catalysts
for
facilitating
anodic
oxygen
evolution
reaction
(OER).
Despite
tremendous
efforts
fundamental
research,
most
today's
OER
works
are
conducted
under
room
temperature,
which
deviates
significantly
with
AEMWE's
operating
temperature
(50-80
°C).
To
bridge
this
gap,
it
highly
desirable
obtain
insights
into
catalytic
behavior
at
elevated
temperatures.
Herein,
using
well-known
perovskite
catalyst
Ba
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(32)
Опубликована: Март 25, 2024
Abstract
Understanding
of
fundamental
mechanism
and
kinetics
the
oxygen
evolution
reaction
(OER)
is
pivotal
for
designing
efficient
OER
electrocatalysts
owing
to
its
key
role
in
electrochemical
energy
conversion
devices.
In
past
few
years,
lattice
oxidation
(LOM)
arising
from
anodic
redox
chemistry
has
attracted
significant
attention
as
it
involves
a
direct
O─O
coupling
thus
bypasses
thermodynamic
limitations
traditional
adsorbate
(AEM).
Transition
metal‐based
oxyhydroxides
are
generally
acknowledged
real
catalytic
phase
alkaline
media.
particular,
their
low‐dimensional
layered
structures
offer
sufficient
structural
flexibility
trigger
LOM.
Herein,
comprehensive
overview
provided
recent
advances
anion
LOM‐based
electrocatalysts.
Based
on
analyses
electronic
structure
LOM,
strategy
proposed
activate
Possible
identification
techniques
corroboration
also
reviewed.
addition,
reconstruction
process
induced
by
LOM
focused
importance
multiple
situ/operando
characterizations
highlighted
unveil
chemical
origins
To
conclude,
prospect
remaining
challenges
future
opportunities
presented.
Industrial Chemistry and Materials,
Год журнала:
2023,
Номер
1(3), С. 312 - 331
Опубликована: Янв. 1, 2023
This
review
discusses
the
OER
reaction
mechanism
(AEM
and
LOM)
research
progress
of
MnO
2
-based
catalysts.
The
optimization
strategy
catalysts
was
summarized.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(8), С. 5324 - 5332
Опубликована: Фев. 14, 2024
The
low
coverage
rate
of
anode
OH
adsorption
under
high
current
density
conditions
has
become
an
important
factor
restricting
the
development
industrial
alkaline
water
electrolyzer
(AWE).
Here,
we
present
our
rare
earth
modification
promotion
strategy
on
using
oxygen-friendly
interface
to
increase
NiS2
surface
for
efficient
AWE
catalysis.
Density
functional
theory
calculations
predict
that
earths
can
enhance
OH,
and
synthesis
reaction
mechanism
is
discussed
in
process
spectrum.
Experimentally,
by
preparing
a
series
rare-earth-modified
NiS2,
relationship
between
coverage,
active
site
density,
catalytic
activity
was
established
attenuated
total
reflection
Fourier
transform
infrared
(ATR-FTIR)
spectroscopy,
time-resolved
absorption
spectra,
so
on.
unique
oxygenophilic
properties
thereby
increasing
sites
Furthermore,
Eu2O3/NiS2
assembled
into
equipment
operated
stably
over
240
h
at
300
mA
cm–2
80
°C
30%
KOH.
Rare-earth-modified
exhibits
better
than
traditional
non-noble
metal
catalysts
Ni(OH)2
providing
new
approach
solve
problem
anode.
Chemical Communications,
Год журнала:
2024,
Номер
60(39), С. 5104 - 5135
Опубликована: Янв. 1, 2024
This
review
has
examined
the
advancements
and
challenges
in
development
of
transition
metal-based
electrocatalysts
for
alkaline
water
splitting
reaction
last
decade.
Abstract
Electrochemical
transformation
processes
involving
carbon,
hydrogen,
oxygen,
nitrogen,
and
small‐molecule
chemistries
represent
a
promising
means
to
store
renewable
energy
sources
in
the
form
of
chemical
energy.
However,
their
widespread
deployment
is
hindered
by
lack
efficient,
selective,
durable,
affordable
electrocatalysts.
Recently,
grain
boundary
(GB)
engineering
as
one
category
defect
engineering,
has
emerged
viable
powerful
pathway
achieve
improved
electrocatalytic
performances.
This
review
presents
timely
comprehensive
overview
recent
advances
GB
for
efficient
electrocatalysis.
The
beneficial
effects
introducing
GBs
into
electrocatalysts
are
discussed,
followed
an
synthesis
characterization
GB‐enriched
Importantly,
latest
developments
leveraging
enhanced
electrocatalysis
thoroughly
examined,
focusing
on
electrochemical
utilization
cycles
nitrogen.
Future
research
directions
proposed
further
advance
understanding
application
image
Abstract
Development
of
clean
and
sustainable
renewable
energy
sources
is
imperative
to
deal
with
the
future
crises.
Various
technologies
have
been
developed
in
this
context,
for
example,
water
electrolysis,
reversible
fuel
cell
metal‐air
batteries
etc.
However,
sluggish
kinetics
oxygen
evolution
reaction
(OER)
occurring
at
anode
these
storage/conversion
systems
becomes
a
significant
hurdle.
Recently,
researchers
utilized
noble
metals
as
electrocatalysts
enhance
their
efficiency
still
high
cost
scarcity
materials
draw
attention
towards
cost‐effective
Perovskite
oxide
nanomaterials
due
extraordinary
flexibility.
In
review,
importance
perovskite
OER
discussed,
followed
by
related
mechanisms
series
activity
descriptors.
Fundamental
understanding
about
instrumentation,
parameters
protocols
experimental
measurements
including
concerned
issues
are
also
summarized.
Moreover,
various
activation
strategies
adopted
recent
years
electrocatalytic
performance
oxides
underlined.
The
article
concludes
an
outlook
existing
challenges
scope
electrocatalysts.
prospects
discussed
herein
may
pave
ways
rationally
design
highly
active
stable
perovskites
outperform
metal‐based
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(37)
Опубликована: Июль 20, 2023
Abstract
A
comprehensive
understanding
of
surface
reconstruction
was
critical
to
developing
high
performance
lattice
oxygen
oxidation
mechanism
(LOM)
based
perovskite
electrocatalysts.
Traditionally,
the
primary
determining
factor
process
believed
be
vacancy
formation
energy.
Hence,
most
previous
studies
focused
on
optimizing
composition
reduce
energy,
which
in
turn
facilitated
process.
Here,
for
first
time,
we
found
that
adding
oxyanions
(SO
4
2−
,
CO
3
NO
−
)
into
electrolyte
could
effectively
regulate
solid–liquid
interface,
significantly
accelerating
and
enhancing
evolution
reaction
(OER)
activities.
Further
indicated
added
would
adsorb
onto
interface
layer,
disrupting
dynamic
equilibrium
between
adsorbed
OH
ions
generated
during
As
such,
more
readily
released
electrolyte,
thereby
leading
an
acceleration
reconstruction.
Thus,
it
expected
our
finding
provide
a
new
layer
LOM‐based
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(30)
Опубликована: Май 27, 2024
Abstract
Electrochemical
water
splitting
is
a
promising
technique
for
the
production
of
high‐purity
hydrogen.
Substituting
slow
anodic
oxygen
evolution
reaction
with
an
oxidation
that
thermodynamically
more
favorable
enables
energy‐efficient
Moreover,
this
approach
facilitates
degradation
environmental
pollutants
and
synthesis
value‐added
chemicals
through
rational
selection
small
molecules
as
substrates.
Strategies
small‐molecule
electrocatalyst
design
are
critical
to
electrocatalytic
performance,
focus
on
achieving
high
current
density,
selectivity,
Faradaic
efficiency,
operational
durability.
This
perspective
discusses
key
factors
required
further
advancement,
including
technoeconomic
analysis,
new
reactor
system
design,
meeting
requirements
industrial
applications,
bridging
gap
between
fundamental
research
practical
product
detection
separation.
aims
advance
development
hybrid
electrolysis
applications.
