ACS Applied Nano Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 14, 2024
Electrochemical
water
splitting
into
hydrogen
is
deemed
as
an
efficient
approach
for
storing
and
utilizing
renewable
clean
energy.
Designing
low-cost
catalysts
crucial
the
large-scale
production
of
from
splitting.
Herein,
Ni-doped
Ru
supported
on
TiO2
nanosheets
were
prepared
by
a
two-step
hydrothermal
method
calcination
in
two
different
atmospheres
(H2/Air)
to
obtain
types
RuNi–TiO2/Ti
Ru(Ni)O2–TiO2/Ti
nanosheets.
The
with
large
specific
surface
area
are
beneficial
dispersing
nanoscale
RuNi
species.
Furthermore,
catalyst
firmly
binds
enhances
electrochemical
stability.
Accordingly,
constructed
Ru(Ni)O2–TiO2/Ti∥RuNi–TiO2/Ti
exhibits
superior
oxygen
evolution
reaction
(OER)
(HER)
performance.
Such
excellent
performance
could
be
ascribed
rich
nanosheets,
synergistic
effect
between
Ni,
their
strong
metal–support
interaction
(SMSI),
which
regulates
electronic
structure
active
sites
increases
electrochemically
area,
thus
promoting
catalytic
during
overall
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(28)
Опубликована: Март 29, 2024
Abstract
The
effectuation
of
pH‐universal
electrocatalysis
is
highly
attractive
but
still
challenging
for
the
hydrogen
evolution
reaction
(HER).
It
appeals
not
only
facilitated
electron
transport
also
kinetical
proton
mass
transfer.
In
this
study,
a
via‐hole
Ru/MoO
2
confined
heterostructure
profiled
as
metal‐support
platform
electron/mass
transfer‐boosted
HER
studies.
indicated
that
as‐formed
Ru─O─Mo
bridge
can
modulate
electronic
at
interface,
and
adsorption
transfer
are
kinetically
derived
by
intensified
metallic
Ru─Ru
bond.
Resultantly,
stably
attains
Pt‐beyond
activity
with
an
ultralow
overpotential
9.2
mV
10
mA
cm
−2
in
1
m
KOH,
achieves
competitive
stability
acidic/neutral
electrolytes.
Both
experimental
computational
results
reveal
accelerated
kinetics
attributable
to
intensive
through
interfacial
Ru→MoO
spillover
effect.
This
work
opens
up
opportunities
rationalize
advanced
electrocatalysts
effect
bond
engineering.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(11)
Опубликована: Янв. 8, 2024
Abstract
The
development
of
highly
active
and
robust
non‐noble‐metal
electrocatalysts
for
alkaline
hydrogen
evolution
reaction
(HER)
at
industrial‐level
current
density
is
the
key
industrialization
water
electrolysis.
Herein,
a
superhydrophilic
self‐supported
Ni/Y
2
O
3
heterostructural
electrocatalyst
constructed
by
high‐temperature
selective
reduction
method,
which
demonstrates
excellent
catalytic
performance
HER
high
density.
Concretely,
this
catalyst
can
drive
10
mA
cm
−2
low
overpotential
61.1
±
3.7
mV,
with
Tafel
slope
52.8
mV
dec
−1
.
Moreover,
it
also
shows
outstanding
long‐term
durability
1000
500
h
in
1
m
KOH,
evidently
exceeding
metallic
Ni
Pt/C(20%)
catalysts.
superior
activity
be
attributed
to
multi‐interface
engineering
electrode.
Construction
heterogeneous
interface
dual
sites
lowers
energy
barrier
dissociation
optimizes
adsorption
energy,
thus
synergistically
accelerating
overall
kinetics.
Also,
its
electrode
structure
firm
electrocatalyst‐substrate
weakened
electrocatalyst‐bubble
interfacial
force
ensures
rapid
charge
transfer,
prevents
shedding,
expedites
H
gas
bubble
release
timely,
further
enhancing
stability
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(28)
Опубликована: Март 11, 2024
Abstract
Electrochemical
water
splitting
to
produce
green
hydrogen
offers
a
promising
technology
for
renewable
energy
conversion
and
storage,
as
well
realizing
carbon
neutrality.
The
efficiency,
stability,
cost
of
electrocatalysts
toward
evolution
reaction
(HER)
electrocatalytic
overall
(EOWS)
at
large
current
densities
are
essential
practical
application.
In
this
review,
the
key
factors
that
determine
catalytic
performance
summarized
from
angel
thermodynamic
kinetic
correlation.
corresponding
design
strategies
presented.
electronic
structure
density
active
sites
affect
adsorption/desorption
intermediates
considered
aspects,
while
charge
transfer
mass
transport
capabilities
closely
associated
with
electrode
resistance
intermediate
diffusion
assigned
effects.
Recent
development
bifunctional
integrated
EOWS
is
also
discussed
in
detail.
Finally,
perspective
direction
on
under
proposed.
This
comprehensive
overview
will
offer
profound
insights
guidance
continued
advancement
field.
The
ocean,
a
vast
hydrogen
reservoir,
holds
potential
for
sustainable
energy
and
water
development.
Developing
high-performance
electrocatalysts
production
under
harsh
seawater
conditions
is
challenging.
Here,
we
propose
incorporating
protective
V
2
O
3
layer
to
modulate
the
microcatalytic
environment
create
in
situ
dual-active
sites
consisting
of
low-loaded
Pt
Ni
N.
This
catalyst
demonstrates
an
ultralow
overpotential
80
mV
at
500
mA
cm
−2
,
mass
activity
30.86
times
higher
than
Pt-C
maintains
least
hours
seawater.
Moreover,
assembled
anion
exchange
membrane
electrolyzers
(AEMWE)
demonstrate
superior
durability
even
demanding
industrial
conditions.
In
localized
pH
analysis
elucidates
environmental
regulation
mechanism
layer.
Its
role
as
Lewis
acid
enables
sequestration
excess
OH
−
ions,
mitigate
Cl
corrosion,
alkaline
earth
salt
precipitation.
Our
protection
strategy
by
using
presents
promising
cost-effective
approach
large-scale
green
production.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(35)
Опубликована: Июнь 25, 2024
Abstract
Investigating
clean
and
sustainable
hydrogen
generation
from
water
splitting
requires
cost‐effective
highly
efficient
electrocatalysts
for
the
evolution
reaction
(HER).
Ruthenium
(Ru)‐based
heterostructure
catalysts
have
emerged
as
promising
alternatives
to
precious
Pt,
offering
significant
potential
overcome
current
bottlenecks.
Recent
advancements
in
Ru‐based
focused
on
achieving
a
balance
between
catalytic
activity
stability.
An
overview
of
these
developments
provides
insights
into
mechanisms
facilitates
development
novel
catalysts.
This
review
begins
with
an
exploration
enhanced
catalysts,
followed
by
critical
summary
synthetic
strategies
employed
fabricate
their
performances
HER.
Attention
is
then
directed
experimental
endeavors
aimed
at
enhancing
HER
performance
Finally,
opportunities
challenges
developing
perspectives
material
design
synthesis
are
discussed.
Through
discussions,
comprehensive
understanding
inspiring
future
research
directions
aim
provide.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Авг. 29, 2024
Rational
design
of
bimetallic
alloy
is
an
effective
way
to
improve
the
electrocatalytic
activity
and
stability
Mo-based
cathode
for
ampere-level
hydrogen
evolution.
However,
it
still
critical
realise
desirable
syntheses
due
wide
reduction
potentials
between
different
metal
elements
uncontrollable
nucleation
processes.
Herein,
we
propose
a
rapid
Joule
heating
method
effectively
load
RuMo
onto
MoOx
matrix.
As-prepared
catalyst
exhibits
excellent
(2000
h
@
1000
mA
cm
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(30), С. 20594 - 20603
Опубликована: Май 20, 2024
Heterophase
nanomaterials
have
sparked
significant
research
interest
in
catalysis
due
to
their
distinctive
properties
arising
from
synergistic
effects
of
different
components
and
the
formed
phase
boundary.
However,
challenges
persist
controlled
synthesis
heterophase
intermetallic
compounds
(IMCs),
primarily
lattice
mismatch
distinct
crystal
phases
difficulty
achieving
precise
control
transitions.
Herein,
orthorhombic/cubic
Ru2Ge3/RuGe
IMCs
with
engineered
boundary
architecture
are
synthesized
anchored
on
reduced
graphene
oxide.
The
exhibit
excellent
hydrogen
evolution
reaction
(HER)
performance
a
high
current
density
1000
mA
cm–2
at
low
overpotential
135
mV.
presence
boundaries
enhances
charge
transfer
improves
kinetics
water
dissociation
while
optimizing
processes
adsorption/desorption,
thus
boosting
HER
performance.
Moreover,
an
anion
exchange
membrane
electrolyzer
is
constructed
using
as
cathode
electrocatalyst,
which
achieves
voltage
1.73
V,
activity
remains
virtually
undiminished
over
500
h.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 17, 2024
The
utilization
of
seawater
for
hydrogen
production
via
water
splitting
is
increasingly
recognized
as
a
promising
avenue
the
future.
key
dilemma
electrolysis
incompatibility
superior
hydrogen-
and
oxygen-evolving
activities
at
ampere-scale
current
densities
both
cathodic
anodic
catalysts,
thus
leading
to
large
electric
power
consumption
overall
splitting.
Here,
in
situ
construction
Fe
