Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
Abstract
Entropy
engineering
has
proven
effective
in
enhancing
catalyst
electrochemical
properties,
particularly
for
the
oxygen
evolution
reaction
(OER).
Challenges
persist,
however,
modulating
entropy
and
understanding
dynamic
reconfiguration
of
high‐entropy
sulfides
during
OER.
In
this
study,
an
innovative
situ
corrosion
method
is
introduced
to
convert
low‐valent
nickel
on
a
foam
substrate
into
heazlewoodite
(HES/NF),
significantly
boosting
OER
performance.
By
synthesizing
series
low‐,
medium‐,
heazlewoodites,
intrinsic
factors
influence
surface
electrocatalytic
activity
systematically
explored.
Employing
combination
ex
characterization
techniques,
it
observed
that
HES/NF
dynamically
transforms
stable
hydroxide
oxide
(MOOH)‐sulfide
composite
under
conditions.
This
transition,
coupled
with
lattice
distortion,
optimizes
electrostatic
potential
distribution,
ensuring
superior
catalytic
preventing
sulfide
deactivation
through
formation
HES‐MOOH
species.
synergy
enables
achieve
remarkably
low
overpotentials:
172.0
mV
at
100.0
mA
cm
−2
229.0
extreme
current
density
300.0
.
When
paired
Pt/C
cathode,
exhibits
rapid
kinetics,
outstanding
stability,
exceptional
water‐splitting
The
scalable,
cost‐effective
approach
paves
way
advanced
electrocatalyst
design,
promising
breakthroughs
energy
storage
conversion
technologies.
Catalysts,
Journal Year:
2025,
Volume and Issue:
15(2), P. 124 - 124
Published: Jan. 27, 2025
Rapid
industrial
growth
has
overexploited
fossil
fuels,
making
hydrogen
energy
a
crucial
research
area
for
its
high
and
zero
carbon
emissions.
Water
electrolysis
is
promising
method
as
it
greenhouse
gas-free
energy-efficient.
However,
OER,
slow
multi-electron
transfer
process,
the
limiting
step.
Thus,
developing
efficient,
low-cost,
abundant
electrocatalysts
vital
large-scale
water
electrolysis.
In
this
paper,
application
progress
of
transition
metal
chalcogenides
(TMCs)
catalysts
oxygen
evolution
reaction
in
recent
years
are
comprehensively
reviewed.
The
key
findings
highlight
catalytic
mechanism
performance
TMCs
synthesized
using
single
or
multiple
metals.
Notably,
modifications
through
recombination,
heterogeneous
interface
engineering,
vacancy,
atom
doping
found
to
effectively
regulate
electronic
structure
chalcogenides,
increasing
number
active
centers
reducing
adsorption
intermediates
barriers
OER.
paper
further
discusses
shortcomings
challenges
OER
catalysts,
including
low
electrical
conductivity,
limited
sites,
insufficient
stability
under
harsh
conditions.
Finally,
potential
directions
new
TMC
with
enhanced
efficiency
proposed.
EcoMat,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 12, 2024
Abstract
The
most
feasible
technique
for
producing
green
hydrogen
is
water
electrolysis.
In
recent
years,
there
has
been
significant
study
conducted
on
the
use
of
transition
metal
compounds
as
electrocatalysts
both
anodes
and
cathodes.
Peoples
have
attempted
several
strategies
to
improve
electrocatalytic
activity
their
original
structure.
One
such
involves
introducing
rare
earth
metals
or
creating
heterostructures
with
based
metals.
incorporation
significantly
enhances
by
many
folds,
while
offer
structural
stability
ability
manipulate
electronic
properties
system.
These
factors
led
a
boom
in
investigations
metal‐based
electrocatalysts.
There
currently
pressing
demand
review
article
that
can
provide
comprehensive
overview
scientific
advancements
elucidate
mechanistic
aspects
impact
lanthanide
doping.
This
begins
explaining
structure
lanthanides.
We
next
examine
aspects,
followed
doping
heterostructure
formation
electrolysis
applications.
It
expected
this
particular
effort
will
benefit
broad
audience
stimulate
more
research
area
interest.
image
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
Abstract
The
commercial
utilization
of
low‐dimensional
catalysts
has
been
hindered
by
their
propensity
for
agglomeration
and
stacking,
greatly
minimizing
active
sites.
To
circumvent
this
problem,
materials
can
be
assembled
into
systematic
3D
architectures
to
synergistically
retain
the
benefits
constituent
nanomaterials,
with
value‐added
bulk
properties
such
as
increased
surface
area,
improved
charge
transport
pathways,
enhanced
mass
transfer,
leading
higher
catalytic
activity
durability
compared
constituents.
hierarchical
organization
building
blocks
within
structures
also
enables
precise
control
over
catalyst's
morphology,
composition,
chemistry,
facilitating
tailored
design
specific
electrochemical
applications.
Despite
surge
in
metal‐based
assemblies,
there
are
no
reviews
encompassing
different
types
assemblies
from
nanomaterials
electrocatalysis.
Herein,
review
addresses
gap
investigating
various
self‐supported
exploring
how
electrocatalytic
performance
elevated
through
structural
modifications
mechanistic
studies
tailor
them
reactions.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 14, 2024
Abstract
To
realize
the
practical
application
of
rechargeable
Zn–Air
batteries
(ZABs),
it
is
imperative
to
develop
a
non‐noble
metal‐based
electrocatalyst
with
high
electrochemical
performance
for
oxygen
reduction
reaction
(ORR)
and
evolution
(OER).
Herein,
Ni‐doped
Co
9
S
8
nanoparticles
dispersed
on
an
inverse
opal‐structured
N,
co‐doped
carbon
matrix
(IO─Ni
x
9‐x
@NSC)
as
bifunctional
presented.
The
unique
3D
porous
structure,
arranged
in
opal
pattern,
provides
large
active
surface
area.
Also,
conductive
substrate
ensures
homogeneous
dispersion
Ni
nanocrystals,
preventing
aggregation
increasing
exposure
sites.
introduction
heteroatom
dopants
into
structure
generates
defect
sites
enhances
polarity,
thereby
improving
electrocatalytic
alkaline
solutions.
Consequently,
IO─Ni
@NSC
shows
excellent
activity
half‐wave
potential
0.926
V
ORR
low
overpotential
289
mV
at
10
mA
cm
−2
OER.
Moreover,
ZAB
assembled
prepared
exhibits
higher
specific
capacity
(768
mAh
g
Zn
−1
),
peak
power
density
(180.2
mW
outstanding
stability
(over
160
h)
compared
precious
electrocatalyst.
