Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 16, 2024
Superlattice
materials
have
emerged
as
promising
candidates
for
water
electrocatalysis
due
to
their
tunable
crystal
structures,
electronic
properties,
and
potential
interface
engineering.
However,
the
catalytic
activity
of
transition
metal-based
superlattice
hydrogen
evolution
reaction
(HER)
is
often
constrained
by
intrinsic
band
which
can
limit
charge
carrier
mobility
active
site
availability.
Herein,
a
highly
efficient
electrocatalyst
based
on
VS
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 3, 2025
Abstract
Heusler
alloys
have
gradually
attracted
extensive
research
interests
in
the
electrochemical
hydrogen
evolution
reaction
(HER)
due
to
their
unique
structural
features.
However,
inherent
half‐metallic
characteristics
of
them
impede
application.
Therefore,
reasonable
tuning
electronic
structure
alloy
catalysts
is
crucial
for
enhancing
catalytic
activity.
Here,
we
modulated
Fe
2
MnSi
by
precisely
substituting
Mn
with
Ru
using
arc
melting
and
prepared
x
1‐
Si
materials
enhanced
HER
properties.
The
incorporation
highly
electronegative
introduces
substantial
electronegativity
gradients
among
metals,
prompting
a
pronounced
Ru‐induced
electron
enrichment
effect
that
facilitates
significant
charge
redistribution.
This
modulation
enhances
conductivity
fine‐tunes
d‐band
center,
ultimately
optimizing
adsorption
energy
barrier
at
active
site.
As
result,
overpotential
current
density
10
mA
cm
−2
significantly
reduced
from
525
mV
19
under
acidic
conditions.
work
provides
insights
into
design
efficient
electrocatalysts
expands
potential
applications
electrocatalysis.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 15, 2024
Abstract
Introducing
interstitial
light
atoms
shows
great
potential
in
improving
the
intrinsic
activity
and
stability
of
metal
catalysts
owing
to
strongly
affecting
electronic
structure
adsorption
properties.
However,
filling
atomically
dispersed
into
lattices
further
unveiling
their
effects
are
still
limited
by
tightly
arranged
lattices.
Herein,
study
reports
a
calcination
reduction
assisted
trace
strategy
form
series
single
filled
Co‐based
(Co‐X@NF,
X
=
P,
N
NF
nickel
foam),
therefore
constructing
monometallic
atomic
interfaces
between
P‐coordinated
Co
δ+
0
promote
alkaline
hydrogen
evolution
reaction
(HER).
Noteworthy,
optimal
Co‐P
0.43
@NF
with
rich
interfacial
very
high
turnover
frequency
values
(5.64
s
−1
),
which
is
close
noble
level
far
exceeds
non‐noble
catalysts.
Meanwhile,
it
maintains
excellent
150
h
at
100
mA
cm
−2
.
Theoretical
studies
prove
that
promotes
H
2
O
dissociation
optimizes
H*
energy,
thus
forming
highly
active
interfaces,
greatly
accelerates
HER
kinetics.
Anion
exchange
membrane
water
electrolyzer
(AEMWE)
represents
a
promising
sustainable
method
for
large-scale
industrial-grade
hydrogen
manufacturing.
However,
the
sluggish
kinetics
of
bifunctional
oxygen/hydrogen
evolution
reaction
(OER/HER)
electrocatalysts
makes
it
imperative
to
develop
high-performance
anode
and
cathode
materials.
Herein,
P-doped
β-phase
NiMoO4
(p-β-NiMoO4)
nanorods
were
first
constructed
as
material
HER,
then
α-phase
(p-β-NiMoO4-A)
derived
by
an
electrochemical
phase
transformation
mechanism
was
further
applied
OER.
A
series
characterizations
supported
that
applying
sufficient
potential
β-NiMoO4
can
drive
from
beta
alpha.
Compared
with
directly
prepared
counterpart,
this
dynamic
results
in
catalyst
tuning
atomic
configuration
environment,
modifying
electronic
state,
optimizing
*OH
adsorption
ability.
Consequently,
assembled
two-electrode
electrolytic
cell
system
contributes
remarkable
overall
water/seawater
splitting
capacity
outstanding
long-term
durability
even
under
operating
conditions.
The
AEMWE
device
ultralow
voltage
2.15
V
at
2.0
A·cm–2
current
density
confirms
applicability
electrocatalysts.
This
study
could
provide
path
realize
efficient
transition
nickel–molybdenum-based
materials
industrial
clean
energy
conversion.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 5, 2025
Abstract
Electrocatalytic
water
splitting
has
emerged
as
a
key
method
for
large‐scale
production
of
green
hydrogen.
Constructing
efficient,
durable,
and
low‐cost
electrocatalysts
the
hydrogen
evolution
reaction
at
high
current
densities
is
prerequisite
practical
industrial
applications
splitting.
Recently,
non‐noble
metal‐based
self‐supporting
electrodes
have
been
explored
density
due
to
their
cost‐effective,
conductivity
metal
substrate,
robust
interfacial
binding
between
catalyst
strong
mechanical
stability.
In
this
review,
recently
reported
(Ni,
Fe,
Cu,
Co,
Ti,
Mo,
alloy)
electrode
applied
are
comprehensively
summarized,
classified,
discussed.
Five
fundamental
design
principles
such
intrinsic
activity,
abundant
active
sites,
fast
electron
transfer,
mass
transport,
stability
proposed
discussed
achieve
high‐performance
under
densities.
Furthermore,
various
modification
strategies
including
heteroatom
doping,
morphology
engineering,
interface
phase
strain
engineering
enhance
catalytic
activity
durability
electrode.
Finally,
challenges
prospects
designing
efficient
stable
in
future
This
comprehensive
overview
will
provide
valuable
insight
guidance
development
production.
Deactivating
the
concentration
of
marine
microorganisms
is
suitable
and
proper
for
ballast
water
treatment.
In
here,
a
promising
strategy
has
been
presented
to
create
massive
oxygen
vacancies
synergistic
with
metallic
Bi
nanoparticles
on
ZnWO4
inactivating
bacteria
in
seawater,
demonstrating
that
paramount
incorporation
2BZWO
(Bi/ZnWO4)
samples
exhibits
superior
photocatalytic
sterilization,
which
sterilization
efficiency
2.83
times
pure
ZnWO4.
The
co-incorporation
significantly
enhanced
absorption
visible
light
enrichment
photogenerated
electrons,
promoting
separation
charge
carriers.
Moreover,
first-principles
calculations
demonstrate
coeffect
guided
reconfiguration
active
sites
electrons
flowing
direction.
Results
from
this
study
provide
creative
controllable
Bi/ZnWO4
synthesis
manipulate
inactivation
bacteria.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 21, 2025
Abstract
Hydrogen
production
via
alkaline
seawater
electrolysis
represents
a
promising
strategy
for
future
sustainable
energy
development.
In
this
study,
FeCoP/TiN/CP(carbon
paper)
nanoarray
electrode
with
exceptional
hydrogen
evolution
reaction
(HER)
activity
and
durability
at
the
industrial
current
density
is
successfully
fabricated
by
engineering
electronic
coupling
N─transition
metal
(TM,
Co/Fe)─P
interfacial
bridge.
Remarkably,
FeCoP/TiN/CP
requires
only
an
overpotential
of
129
mV
(alkaline
fresh
water)
152
seawater)
to
achieve
500
mA
cm
−2
,
stable
operation
demonstrated
2000
h
in
freshwater
340
negligible
degradation.
The
superior
HER
performance
stems
from
unique
architecture
phase
interface
N─TM(Co/Fe)─P
bridge
bonding,
which
enhances
wettability,
facilitates
bubble
release,
provides
resistance
corrosion.
Theoretical
calculations
demonstrate
that
bridging
regulates
structure
FeCoP,
promoting
water
adsorption
dissociation,
while
optimizing
intermediate
H*
free
energy.
Furthermore,
covalent
nature
N‐TM(Co/Fe)‐P
bridging,
along
strengthened
Co/Fe‐P
bonds,
contributes
stability
FeCoP/TiN/CP.
This
study
not
new
insights
into
design
highly
active
heterostructure
electrocatalysts,
but
also
paves
way
practical
cost‐effective
electrolysis.
