Recent Progress on the Stability of Electrocatalysts under High Current Densities toward Industrial Water Splitting
ACS Catalysis,
Год журнала:
2024,
Номер
unknown, С. 14399 - 14435
Опубликована: Сен. 14, 2024
Язык: Английский
Scaling Up Stability: Navigating from Lab Insights to Robust Oxygen Evolution Electrocatalysts for Industrial Water Electrolysis
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 29, 2024
Abstract
In
the
pursuit
of
sustainable
hydrogen
production
via
water
electrolysis,
paramount
importance
electrocatalyst
stability
emerges
as
a
defining
factor
for
long‐term
industrial
viability.
A
thorough
understanding
and
enhancement
not
only
ensure
extended
catalyst
lifetimes
but
also
pave
way
consistent
efficient
generation.
This
review
focuses
on
pivotal
role
in
determining
practical
viability
oxygen
evolution
electrocatalysts
(OECs)
large‐scale
applications
electrolysis
production.
The
paper
explores
over
initial
activity,
citing
examples
hypothetical
scenarios.
First,
figures
merits
evaluation
are
explained
along
with
available
benchmarking
protocols
evaluation.
Further,
text
delves
into
various
strategies
that
can
enhance
which
include
self‐healing/regeneration
pathway,
reaction
(OER)
mechanism
optimization
to
achieve
highly
stable
OER
stabilization
active
metals
atoms
within
inhibit
dissolution
forward
application.
interplay
stability,
cost
is
suit
application
electrocatalyst.
Lastly,
it
outlines
challenges,
prospects,
future
directions,
presenting
guide
advancing
OECs
generation
landscape.
Язык: Английский
Mesoporous high-entropy-alloy electrocatalysts via electrospinning for enhanced alkaline water electrolysis
Fuel,
Год журнала:
2025,
Номер
391, С. 134800 - 134800
Опубликована: Фев. 21, 2025
Язык: Английский
Gd‐Induced Oxygen Vacancy Creation Activates Lattice Oxygen Oxidation for Water Electrolysis
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 26, 2025
Abstract
As
a
key
reaction
in
water
electrolysis
and
fuel
cells,
the
oxygen
evolution
(OER)
involves
sluggish
four‐electron
proton
transfer
process.
Understanding
OER
pathways
kinetics
is
critical
for
designing
efficient
electrocatalysts.
In
this
study,
through
density
functional
theory
(DFT)
calculations,
it
demonstrated
that
incorporation
of
Gd
into
Fe‐doped
NiO
elevates
O
2
p
band
center
generates
more
unoccupied
states.
Furthermore,
promotes
formation
vacancies,
which,
together,
enhance
lattice
oxidation
mechanism
(LOM)
pathway
OER.
The
adsorption‐free
energy
diagrams
confirm
doping
significantly
lowers
theoretical
overpotentials
at
both
Fe
Ni
sites
NiO,
thereby
improving
activity.
Based
on
these
findings,
co‐doped
ultrathin
nanosheets
are
synthesized
via
spray
combustion.
an
catalyst,
material
exhibited
low
overpotential
227
mV,
which
40
mV
lower
than
long‐term
catalytic
stability
over
150
h.
anion
exchange
membrane
system,
stable
performance
120
h
current
20
mA
cm
−2
.
Язык: Английский
Toward a molecular-scale picture of water electrolysis: mechanistic insights, fundamental kinetics and electrocatalyst dynamic evolution
Coordination Chemistry Reviews,
Год журнала:
2025,
Номер
536, С. 216651 - 216651
Опубликована: Апрель 6, 2025
Язык: Английский
Transition Metal Dichalcogenides in Electrocatalytic Water Splitting
Catalysts,
Год журнала:
2024,
Номер
14(10), С. 689 - 689
Опубликована: Окт. 3, 2024
Two-dimensional
transition
metal
dichalcogenides
(TMDs),
also
known
as
MX2,
have
attracted
considerable
attention
due
to
their
structure
analogous
graphene
and
unique
properties.
With
superior
electronic
characteristics,
tunable
bandgaps,
an
ultra-thin
two-dimensional
structure,
they
are
positioned
significant
contenders
in
advancing
electrocatalytic
technologies.
This
article
provides
a
comprehensive
review
of
the
research
progress
TMDs
field
water
splitting.
Based
on
fundamental
properties
principles
electrocatalysis,
strategies
enhance
performance
through
layer
control,
doping,
interface
engineering
discussed
detail.
Specifically,
this
delves
into
basic
properties,
reaction
mechanisms,
measures
improve
catalytic
splitting,
including
creation
more
active
sites,
phase
engineering,
construction
heterojunctions.
Research
these
areas
can
provide
deeper
understanding
guidance
for
application
thereby
promoting
development
related
technologies
contributing
solution
energy
environmental
problems.
hold
great
potential
future
needs
further
explore
develop
new
TMD
materials,
optimize
catalysts
achieve
efficient
sustainable
conversion.
Additionally,
it
is
crucial
investigate
stability
durability
during
long-term
reactions
longevity.
Interdisciplinary
cooperation
will
bring
opportunities
research,
integrating
advantages
different
fields
from
practical
application.
Язык: Английский
Anode Alchemy on Multiscale: Engineering from Intrinsic Activity to Impedance Optimization for Efficient Water Electrolysis
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 5, 2025
The
past
decade
has
seen
significant
progress
in
proton
exchange
membrane
water
electrolyzers
(PEMWE),
but
the
growing
demand
for
cost-effective
electrolytic
hydrogen
pushes
higher
efficiency
at
lower
costs.
As
a
complex
system,
performance
of
PEMWE
is
governed
by
combination
multiscale
factors.
This
review
summarizes
latest
from
quantum
to
macroscopic
scales.
At
level,
electron
spin
configurations
can
be
optimized
enhance
catalytic
activity.
nano
and
meso
scales,
advancements
atomic
structure
optimization,
crystal
phase
engineering,
heterostructure
design
improve
mass
transport.
macro
scale,
innovative
techniques
gas
bubble
management
internal
resistance
reduction
drive
further
gains
under
ampere-level
operating
conditions.
These
modifications
level
cascade
through
meso-
macro-scales,
affecting
charge
transfer,
reaction
kinetics,
evolution
management.
Unlike
conventional
approaches
that
focus
solely
on
one
scale-either
catalyst
(e.g.,
atomic,
or
modifications)
device
porous
transport
layers
design)-combining
optimizations
unlocks
greater
improvements.
Finally,
perspective
future
opportunities
engineering
anode
toward
commercial
viability
offered.
Язык: Английский
Hollow Fe2O3-NiFe2O4 hetero-nanoframes coupled with N-doped graphene for boosted electrochemical water oxidation through optimizing intermediate bonding
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 162666 - 162666
Опубликована: Апрель 1, 2025
Язык: Английский
Deciphering the Synergy of Multiple Vacancies in High‐Entropy Layered Double Hydroxides for Efficient Oxygen Electrocatalysis
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 2, 2025
Abstract
Layered
double
hydroxides
(LDHs)
hold
the
promise
of
designing
efficient
and
long‐lived
electrocatalysts
for
alkaline
oxygen
evolution
reaction
(OER),
yet
control
their
activity
durability
at
ampere‐scale
current
densities
remains
a
challenge.
Here,
high‐entropy
LDH
anode
integrating
multiple
metal
vacancies
is
reported
that
achieves
superior
robust
OER
under
industrial
conditions.
The
molar
ratio
Ni:Cr:Co:Zn:Fe
in
LDHs
engineers
electronic
structure
via
cocktail
effect,
yielding
more
high‐valent
ions
promote
electrochemical
restructuring.
Using
various
operando
characterizations,
generation
γ
‐NiOOH
active‐phase
on
surface
identified,
triggering
oxygen‐vacancy‐site
mechanism
(OVSM).
Importantly,
volcano
relationship
found
between
intrinsic
(overpotential
value)
local
coordination
Ni
active
centers
(matching
with
Δ
G
*OH
).
integration
significantly
optimizes
adsorption‐free
energy
oxygen‐containing
intermediates
are
anchored
sites,
boosting
OVSM.
Accordingly,
developed
0.15
Cr
Co
0.4
Zn
0.1
Fe
0.2
‐LDH@NF
1
A·cm
−2
1.81
V
enables
stable
operation
over
300
h
anion
exchange
membrane
water
electrolyzer.
These
findings
elucidate
synergistic
effects
enlighten
vacancy
engineering
high‐efficiency
catalysts.
Язык: Английский
Interfacial Built‐In Electric Field and Interatomic Charge Transfer Synergistically Boosting Oxygen Evolution on CeO2/Ce‐Co3O4 Electrocatalyst
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 15, 2025
Abstract
Boosting
oxygen
evolution
reaction
(OER)
performances
of
transition
metal‐based
electrocatalysts
via
charge
localization
regulation
is
an
effective
strategy
to
reduce
the
cost
hydrogen
production
through
water
electrolysis,
but
still
remains
great
challenging.
Herein,
a
CeO
2
/Ce‐Co
3
O
4
OER
electrocatalyst
decorated
with
nanoparticles
and
Ce
single
atoms
has
been
fabricated
using
one
deposition
calcination
method.
The
as‐obtained
heterojunction
structure
triggers
interfacial
built‐in
electric
field
as‐introduced
induce
transfer
in
Co‐O‐Ce
configurations,
thus
tremendously
tuning
electron
Co
sites.
As
expected,
catalyst
exhibits
superior
toward
alkaline
condition,
achieving
current
density
10
mA
cm
−2
at
overpotential
only
216
mV,
demonstrating
outstanding
long‐term
stability
for
100
h.
Density
functional
theory
in‐situ
spectroscopic
results
confirm
that
co‐existence
atom
doping
can
contribute
d
band
centers
upshift
sites,
thereby
leading
increased
adsorption
energy,
lowered
barrier,
more
proportion
lattice
mechanism
pathway.
This
work
reveals
application
perspective
regulating
spinel
electronic
structures
interatomic
large‐scale
applications.
Язык: Английский