Materials Today Catalysis,
Год журнала:
2024,
Номер
4, С. 100039 - 100039
Опубликована: Янв. 17, 2024
Electrocatalysis
plays
a
crucial
role
in
the
conversion
and
storage
of
renewable
energy,
offering
significant
potential
for
addressing
energy
crisis
environmental
concerns.
High-entropy
oxides
(HEOs),
class
emerging
functional
materials,
have
gained
increasing
attention
electrocatalysis
due
to
their
stable
crystal
structure,
exceptional
geometric
compatibility,
unique
electronic
balance
factors,
abundant
active
sites.
In
this
comprehensive
review,
we
present
recent
advancements
utilizing
HEOs
as
catalysts
various
energy-based
electrocatalytic
reactions.
We
begin
with
an
overview
that
includes
definitions,
fundamental
properties,
theoretical
investigations.
Subsequently,
describe
different
synthetic
methods
while
highlighting
two
newly-developed
techniques.
Furthermore,
extensively
discuss
developments
HEO-based
electrocatalysts
diverse
structures
such
rock-salt-type,
rutile-type,
spinel-type,
perovskite-type,
other
specially-structured
HEOs.
Special
emphasis
is
placed
on
designed
strategies
aimed
at
enhancing
performance
exploring
correlations
between
structure/
composition
performance.
Finally,
provide
concluding
remarks
along
perspectives
future
opportunities
exciting
field.
Chemical Society Reviews,
Год журнала:
2023,
Номер
52(5), С. 1723 - 1772
Опубликована: Янв. 1, 2023
Defective
two-dimensional
(2D)
materials
show
huge
potential
for
energy-related
fields.
This
review
overviews
the
formation/evolution
mechanisms
and
engineering
strategies
of
defects
in
2D
materials,
which
enable
enhanced
electrode
reaction
kinetics.
Advanced Energy Materials,
Год журнала:
2022,
Номер
12(45)
Опубликована: Сен. 30, 2022
Abstract
The
rational
design
and
development
of
highly
efficient
oxygen
evolution
reaction
(OER)
electrocatalysts
is
vital
for
the
application
renewable
energy
devices.
Recently,
strategy
defect
engineering
draws
much
attention
due
to
its
positive
effect
on
regulating
electronic
structure,
thus,
promoting
electrocatalytic
performance
various
materials.
In
this
review,
main
focus
cation
vacancy
defects
transition
metal‐based
electrocatalysts;
latest
progress
in
OER
summarized.
different
effects
are
well
discussed
together
with
mechanism,
mainly
including
improving
conductivity,
optimizing
adsorption
key
intermediates,
guiding
surface
reconstruction
form
active
species,
enhancing
long‐term
stability.
Then,
methods
construct
characterization
vacancies
systematically
introduced.
Finally,
remaining
challenges
future
prospects
further
proposed.
Advanced Materials,
Год журнала:
2023,
Номер
35(39)
Опубликована: Янв. 14, 2023
Abstract
The
energy
efficiency
of
metal–air
batteries
and
water‐splitting
techniques
is
severely
constrained
by
multiple
electronic
transfers
in
the
heterogenous
oxygen
evolution
reaction
(OER),
high
overpotential
induced
sluggish
kinetics
has
become
an
uppermost
scientific
challenge.
Numerous
attempts
are
devoted
to
enabling
activity,
selectivity,
stability
via
tailoring
surface
physicochemical
properties
nanocatalysts.
Lattice‐strain
engineering
as
a
cutting‐edge
method
for
tuning
geometric
configuration
metal
sites
plays
pivotal
role
regulating
interaction
catalytic
surfaces
with
adsorbate
molecules.
By
defining
d‐band
center
descriptor
structure–activity
relationship,
individual
contribution
strain
effects
within
state‐of‐the‐art
electrocatalysts
can
be
systematically
elucidated
OER
optimization
mechanism.
In
this
review,
fundamentals
advancements
strain‐catalysts
showcased
innovative
trigger
strategies
enumerated,
particular
emphasis
on
feedback
mechanism
between
precise
regulation
lattice‐strain
optimal
activity.
Subsequently,
modulation
various
attributes
categorized
impediments
encountered
practicalization
strained
effect
discussed,
ending
outlook
future
research
directions
burgeoning
field.
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(16)
Опубликована: Янв. 31, 2022
Abstract
The
photocatalytic
conversion
of
solar
energy
offers
a
potential
route
to
renewable
energy,
and
its
efficiency
relies
on
effective
charge
separation
in
nanostructured
photocatalysts.
Understanding
the
charge‐separation
mechanism
is
key
improving
performance
this
has
now
been
enabled
by
advances
spatially
resolved
surface
photovoltage
(SRSPV)
method.
In
Review
we
highlight
progress
made
SRSPV
mapping
distributions
at
nanoscale
determining
driving
forces
heterogeneous
photocatalyst
particles.
We
discuss
how
arising
from
built‐in
electric
field,
diffusion,
trapping
can
be
exploited
optimized
through
design.
also
importance
asymmetric
engineering
photocatalysts
for
separation.
Finally,
provide
an
outlook
further
opportunities
that
arise
leveraging
these
insights
guide
rational
design
advance
imaging
technique
expand
knowledge
Journal of Advanced Ceramics,
Год журнала:
2022,
Номер
11(8), С. 1294 - 1306
Опубликована: Июль 18, 2022
Abstract
Developing
highly
efficient
and
stable
non-precious
metal
catalysts
for
water
splitting
is
urgently
required.
In
this
work,
we
report
a
facile
one-step
molten
salt
method
the
preparation
of
self-supporting
Ni-doped
Mo
2
C
on
carbon
fiber
paper
(Ni-Mo
CB
/CFP)
hydrogen
evolution
reaction
(HER).
The
effects
nickel
nitrate
concentration
phase
composition,
morphology,
electrocatalytic
HER
performance
C@CFP
electrocatalysts
was
investigated.
With
continuous
increase
Ni(NO
3
)
concentration,
morphology
gradually
changes
from
granular
to
flower-like,
providing
larger
specific
surface
area
more
active
sites.
Doping
(Ni)
into
crystal
lattice
largely
reduces
impedance
enhances
their
activity.
as-developed
C-3
M
/CFP
electrocatalyst
exhibits
high
catalytic
activity
with
small
overpotential
56
mV
at
current
density
10
mA·cm
−2
.
This
catalyst
has
fast
kinetics,
as
demonstrated
by
very
Tafel
slope
27.4
mV·dec
−1
,
persistent
long-term
stability.
A
further
higher
Ni
had
an
adverse
effect
performance.
Density
functional
theory
(DFT)
calculations
verified
experimental
results.
doping
could
reduce
binding
energy
Mo-H,
facilitating
desorption
adsorbed
(H
ads
surface,
thereby
improving
intrinsic
C-based
catalysts.
Nevertheless,
excessive
would
inhibit
electrocatalysts.
work
not
only
provides
simple
strategy
activity,
but
also
unveils
influence
mechanism
theoretical
perspective.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(21)
Опубликована: Март 8, 2023
Abstract
The
rational
design
of
economic
and
high‐performance
electrocatalytic
water‐splitting
systems
is
great
significance
for
energy
environmental
sustainability.
Developing
a
sustainable
conversion‐assisted
process
provides
promising
novel
approach
to
effectively
boost
its
performance.
Herein,
self‐sustained
system
originated
from
the
heterostructure
perovskite
oxide
with
2D
Ti
3
C
2
T
x
MXene
on
Ni
foam
(La
1‐x
Sr
CoO
/Ti
MXene/Ni)
that
shows
high
activity
solar‐powered
water
evaporation
simultaneous
splitting
presented.
all‐in‐one
interfacial
electrocatalyst
exhibits
highly
improved
oxygen
evolution
reaction
(OER)
performance
low
overpotential
279
mV
at
10
mA
cm
−2
small
Tafel
slope
74.3
dec
−1
,
superior
previously
reported
oxide‐based
electrocatalysts.
Density
functional
theory
calculations
reveal
integration
La
0.9
0.1
can
lower
barrier
electron
transfer
decrease
OER
overpotential,
while
COMSOL
simulations
unveil
solar
could
induce
OH
−
enrichment
near
catalyst
surfaces
enhance
convection
flow
above
catalysts
remove
generated
gas,
remarkably
accelerating
kinetics
splitting.
