Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 21, 2025
Abstract
The
oxygen
evolution
reaction
(OER)
involves
the
recombination
of
diamagnetic
hydroxyl
(OH)
or
water
(H
2
O)
into
paramagnetic
triplet
state
(O
).
spin
conservation
intermediates
plays
a
crucial
role
in
OER,
however,
research
on
dynamics
during
catalytic
process
remains
its
early
stages.
Herein,
β
‐Ni(OH)
and
Fe‐doped
(Ni
5
Fe
1
)
are
utilized
as
model
catalysts
to
understand
mechanism
magnetic
effects
at
iron
(III)
sites
OER.
Combined
with
characterization,
it
is
founded
that
introduction
transforms
antiferromagnetic
Ni(OH)
ferromagnetic
material.
Testing
response
catalyst
under
an
external
field,
OER
activity
Ni
significantly
enhanced
comparison
.
This
improvement
likely
due
sites,
which
promote
enhance
kinetics,
thereby
increasing
efficiency.
Combining
experimental
theoretical
discovered
accelerate
formation
heterogeneous
dual‐site
O─O
bridging,
represented
─Ni─O─O─Fe─,
effectively
enhancing
kinetics
reaction.
study
provides
perspective
structure‐function
relationship
iron‐based
has
significant
implications
for
design
new
catalysts.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(15), P. 10735 - 10744
Published: April 4, 2024
The
lack
of
highly
efficient
and
inexpensive
catalysts
severely
hinders
the
large-scale
application
Zn–air
batteries
(ZABs).
High-entropy
oxides
(HEOs)
exhibit
unique
structures
attractive
properties;
thus,
they
are
promising
to
be
used
in
ZABs.
However,
conventional
high-temperature
synthesis
methods
tend
obtain
microscale
HEOs
with
a
lower
exposure
rate
active
sites.
Here,
we
report
facile
solvothermal
strategy
for
preparing
two-dimensional
(2D)
HEO
sub-1
nm
nanosheets
(SNSs)
induced
by
polyoxometalate
(POM)
clusters.
Taking
advantage
special
2D
structure
precise
element
regulation,
these
HEOs-POM
SNSs
enhanced
bifunctional
oxygen
evolution
reduction
reaction
activity
under
light
irradiation.
Further
applying
ZABs
as
cathode
catalysts,
CoFeNiMnCuZnOx-phosphomolybdic
acid
SNSs-based
deliver
low
charge/discharge
voltage
gap
0.25
V
at
2
mA
cm–2
Meanwhile,
it
could
maintain
an
ultralong-term
stability
1600
h
930
10
cm–2.
fine
control
provide
opportunities
solve
problems
intrinsic
activity,
limited
sites,
instability
air
cathodes
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(12), P. 6021 - 6041
Published: Jan. 1, 2024
This
review
provides
a
comprehensive
overview
of
the
recent
advancements
in
controllable
synthesis
high-entropy
alloys,
ranging
from
approach
and
significance
composition,
morphology,
structure,
surface/interface
engineering.
Science Advances,
Journal Year:
2024,
Volume and Issue:
10(23)
Published: June 5, 2024
Alloying
has
proven
power
to
upgrade
metallic
electrocatalysts,
while
the
traditional
alloys
encounter
limitation
for
optimizing
electronic
structures
of
surface
sites
in
a
continuous
manner.
High-entropy
(HEAs)
overcome
this
by
manageably
tuning
adsorption/desorption
energies
reaction
intermediates.
Recently,
marriage
nanotechnology
and
HEAs
made
considerable
progresses
renewable
energy
technologies,
showing
two
important
trends
size
diminishment
multidimensionality.
This
review
is
dedicated
summarizing
recent
advances
that
are
rationally
designed
electrocatalysis.
We
first
explain
advantages
as
electrocatalysts
from
three
aspects:
high
entropy,
nanometer,
multidimension.
Then,
several
structural
regulation
methods
proposed
promote
electrocatalysis
HEAs,
involving
thermodynamically
nonequilibrium
synthesis,
regulating
(sub-)nanosize
anisotropic
morphologies,
well
engineering
atomic
ordering.
The
general
relationship
between
electrocatalytic
properties
further
discussed.
Finally,
we
outline
remaining
challenges
field,
aiming
inspire
more
sophisticated
HEA-based
nanocatalysts.
Materials Today Catalysis,
Journal Year:
2024,
Volume and Issue:
4, P. 100039 - 100039
Published: Jan. 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.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(46)
Published: June 19, 2024
Abstract
Simultaneously
improving
activity
and
stability
is
a
crucial
yet
challenge
in
the
development
of
metallic
single‐atom‐based
catalysts.
In
current
work,
novel
approach
introduced
to
address
this
issue
by
combining
post‐adsorption
secondary
pyrolysis
techniques
create
synergistic
catalytic
system,
which
single
atoms
(SAs)
Fe
sites
played
NC
matrix
(Fe─NC)
are
coupled
with
high‐entropy
atomic
clusters
(HEACs).
Theoretical
calculations
reveal
that
incorporation
HEACs
lead
rehybridization
3d
orbital
configuration
Fe‐N
4
,
helps
balance
adsorption/desorption
energy
oxygenated
intermediates.
situ
spectroscopy
further
reveals
rate‐limiting
step
OH
*
desorption
on
HEAC/Fe─NC
oxygen
reduction
reaction
(ORR)
more
facile
compared
Fe─NC,
implying
higher
ORR
activity.
Moreover,
effect
diffusion
activation
barriers
entropy
contributes
structural
HEAC/Fe─NC,
resulting
remarkable
durability.
Consequently,
unique
catalyst
exhibits
half‐wave
potentials
0.927
0.828
V
an
aqueous
solution
KOH
(0.1
m
)
HClO
),
respectively,
along
excellent
The
findings
propose
strategy
for
modulating
electronic
structure
SAs
catalysts
enhancing
their
through
strong
interactions
between
HEACs.
Next Sustainability,
Journal Year:
2024,
Volume and Issue:
3, P. 100023 - 100023
Published: Jan. 1, 2024
Electrochemical
water
splitting
driven
by
renewable
energy
is
a
sustainable
and
environmentally
friendly
way
to
produce
clean
hydrogen
fuel.
Due
the
slow
reaction
kinetics,
oxygen
evolution
(OER)
occurring
in
anode
side
regarded
as
bottleneck
of
overall
can
only
take
place
at
decent
rate
presence
efficient
catalysts
containing
transition
or
noble
metals.
Given
huge
demand
for
green
decarbonize
sector
chemical
industry,
global
supply
metal
has
become
large
concern.
In
this
context,
atomically
dispersed
(ADCs)
have
been
proposed
be
promising
alternative
conventional
nanoparticulate
catalysts,
enabling
maximal
utilization
metals
meantime
good
OER
performance
aqueous
solutions
both
alkali
acid.
view
potential
application
well
splitting,
well-designed
ADCs
composing
(iron,
cobalt
nickel)
(ruthenium
iridium)
active
sites
are
summarized
firstly
current
review.
Next,
powerful
tools
investigation
structure-performance
relationship
catalytic
mechanism
elaborated,
including
various
in-situ
characterizations
theoretical
calculation.
Finally,
some
challenges
perspectives
future
development
also
listed,
such
increasing
apparent
activity,
operation
stability
possible
device
verification.
The
purpose
review
provide
recent
process
field
our
understanding
research
toward
promote
further
splitting.
