Dalton Transactions,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
Hydrogen
is
an
ideal
alternative
energy
sources
as
it
non-polluting
and
clean.
The
main
commercial
materials
used
for
hydrogen
production
from
electrolytic
water
are
precious
metals.
Their
high
price
has
a
negative
impact
on
the
industrialisation
of
water,
there
urgent
need
to
research
highly
active
durable
non-precious
metal
replace
them.
Inorganic
transition
metals
interest
due
their
content
low
price.
Here,
we
prepared
performance
stable
Fe-CoMoO
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 10, 2024
Abstract
Transition
metal
chalcogenides
are
an
important
class
of
electrocatalysts
with
broad
application
prospects
in
alkaline
oxygen
evolution
reactions.
Many
researchers
focusing
on
the
situ
conversion
cations
catalysts,
but
have
rarely
considered
contribution
oxidation,
leaching,
and
re‐absorption
to
catalytic
activity.
Herein,
multiple
characterization
approaches
used
monitor
mechanism
origin
CoTe@CoS‐electrocatalyzed
reaction
(OER)
The
research
results
reveal
that
electro‐oxidative
dissolution
Te
S
electrode
surface
forms
TeO
3
2−
SO
,
which
adsorbed
surface.
Moreover,
species
will
further
transform
into
4
.
As
expected,
extra
addition
mixed
tellurite
sulfate
ions
Co
(OH)
2
electrolyte
produces
a
synergistic
effect
can
significantly
boost
OER
Selenites
analogous
effect,
indicating
adsorption
chalcogenates
has
universal
improving
performance.
findings
this
work
provide
unique
insights
materials
enhancing
activity
during
processes.
The
development
of
efficient
and
stable
electrocatalysts
for
the
hydrogen
evolution
reaction
(HER)
is
essential
realization
effective
production
via
seawater
electrolysis.
Herein,
study
has
developed
a
simple
method
that
combines
electrospinning
with
subsequent
thermal
shock
technology
to
effectively
disperse
ruthenium
nanoparticles
onto
highly
conductive
titanium
carbide
nanofibers
(Ru@TiC).
electronic
metal-support
interactions
(EMSI)
resulted
from
charge
redistribution
at
interface
between
Ru
TiC
support
can
optimize
desorption
kinetics
sites
induce
spillover
phenomenon,
thereby
improving
evolution.
As
result,
Ru@TiC
catalyst
exhibits
outstanding
HER
activity,
requiring
low
overpotentials
only
65
mV
in
alkaline
current
density
100
mA
cm-2.
Meanwhile,
demonstrates
excellent
stability,
maintaining
consistent
operation
500
cm-2
least
250
hours.
Additionally,
an
anion
exchange
membrane
electrolyzer
incorporating
operated
continuously
over
hours
200
seawater.
This
highlights
significant
potential
robust
supports
fabrication
enduring
enhance
complex
environments.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 30, 2024
Abstract
The
construction
of
efficient
and
durable
multifunctional
electrodes
for
industrial‐scale
hydrogen
production
presents
a
main
challenge.
Herein,
molybdenum‐modulated
phosphorus‐based
catalytic
(Mo‐NiP@NF)
are
prepared
via
mild
electroless
plating.
Heteroatoms
doping
or
heterostructures
can
reconfigure
the
intrinsic
electronic
structure
pre‐catalyst
optimizes
key
intermediates
adsorption.
Moreover,
(hypo/meta‐)phosphite
anions
(PO
x
δ−
)
molybdate
ions
(MoO
on
electrode
surface
Mo‐NiP@NF
afford
resistance
to
chloride
(Cl
−
corrosion.
exhibits
ultralow
overpotentials
278/550
282/590
mV
at
1
A
cm
−2
during
hydrogen/oxygen
evolution
reaction
(HER/OER)
in
alkaline
simulated
real
seawater,
respectively,
whereas
overall
seawater
splitting
(OWS)
reach
1.96
1.97
V
cell
.
Remarkably,
maintains
stable
operation
1500
h
OWS.
scalability
allowing
assembly
proton
exchange
membrane
(PEM)
electrolyzer
powered
by
photovoltaic
energy,
simulating
portable
hydrogen‐oxygen
respirator
provides
an
oxygen/hydrogen
flows
160/320
mL
min
−1
Expanding
further,
trace
ruthenium‐loaded
catalyst
sodium
borohydride
(NaBH
4
hydrolysis
achieving
generation
rate
(HGR)
11049.2
g
This
work
strategic
innovations
optimization
solutions
economical
multi‐scenario
green
energy
conversion
materials
application.
The
development
of
a
nonnoble
metal-based
cost-effective,
efficient,
and
durable
bifunctional
electrocatalyst
is
crucial
to
achieving
the
goal
carbon
neutrality.
In
this
study,
structural
interfacial
engineering
approach
employed
design
2D-2D
hierarchical
nickel
MOF/nickel
hydroxide-derived
selenide/nickel
telluride
dual-phase
material
through
single-step
selenotellurization
process.
rational
highly
ordered
nanoarchitectures
provides
well-defined
voids
ample
pathways
for
ion
diffusion.
Furthermore,
works
synergistically
at
heterojunctions,
providing
local
enrichment
mechanism
catalytic
As
result,
Ni
Catalysts,
Год журнала:
2025,
Номер
15(3), С. 211 - 211
Опубликована: Фев. 22, 2025
Designing
efficient
and
cost-effective
electrocatalysts
is
crucial
for
the
large-scale
development
of
sustainable
hydrogen
energy.
Amorphous
catalysts
hold
great
promise
application
due
to
their
structural
flexibility
high
exposure
active
sites.
We
report
a
novel
method
in
situ
growth
amorphous
CoNiRuOx
nanoparticle
structures
(CoNiRuOx/NF)
on
nickel
foam
substrate.
In
1
m
KOH,
CoNiRuOx/NF
achieves
current
density
10
mA/cm2
with
evolution
reaction
(HER)
overpotential
only
43
mV
remains
stable
over
100
h
at
mA/cm2.
An
alkaline
electrolyzer
assembled
as
cathode
delivers
2.97
times
higher
than
that
an
IrO2||Pt/C
electrode
pair
potential
2
V
exhibits
excellent
long-term
durability
exceeding
h.
Experimental
results
reveal
combined
replacement
corrosion
reactions
facilitate
formation
structure.
This
work
provides
valuable
insights
developing
scalable
catalysts.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 10, 2025
Abstract
The
sluggish
kinetics
of
the
oxygen
evolution
reaction
(OER)
critically
limit
efficiency
anion
exchange
membrane
water
electrolysis
(AEMWE).
Herein,
a
Ce‐doped
bimetallic
Fe
2
P/NiCoP
hybrid
pre‐catalyst
that
undergoes
dynamic
reconstruction
to
activate
highly
efficient
OER
pathway
is
designed.
optimized
Ce
0.1
‐Fe
exhibits
an
impressively
low
overpotential
280
mV
at
0.5
A
cm
−2
and
small
Tafel
slope
55.3
dec
−1
in
1.0
M
KOH.
Remarkably,
when
integrated
as
anode
AEMWE
electrolyzer,
it
delivers
cell
voltage
1.812
V
maintains
stable
performance
for
over
500
h
60
°C.
In
situ
characterizations
density
functional
theory
(DFT)
calculations
reveal
Ce‐doping
enhances
surface
modulates
electronic
structure,
thereby
reducing
energy
barriers
intermediates
(Δ
G
*OH
Δ
*OOH
)
formation
accelerating
kinetics.
This
work
introduces
novel
strategy
utilize
catalyst
reconstruction,
advancing
their
applications
systems.
ABSTRACT
Ruthenium
(Ru)‐based
electrocatalysts
show
great
promise
as
substitutes
for
platinum
(Pt)
the
alkaline
hydrogen
evolution
reaction
(HER)
because
of
their
efficient
water
dissociation
capabilities.
Nevertheless,
strong
adsorption
Ru–OH
intermediates
(Ru‐OH
ad
)
blocks
active
site,
leading
to
unsatisfactory
HER
performance.
In
this
study,
we
report
a
universal
ligand‐exchange
strategy
synthesizing
MOF‐on‐MOF‐derived
FeP–CoP
heterostructure‐anchored
Ru
single‐atom
site
catalyst
(Ru‐FeP‐CoP/NPC).
The
obtained
shows
low
overpotential
(28
mV
at
10
mA
cm
−2
and
high
mass
activity
(9.29
A
mg
−1
100
mV),
surpassing
performance
commercial
Pt/C
by
factor
46.
Theoretical
studies
that
regulating
local
charge
distribution
sites
could
alleviate
surrounding
OH
−
blockages,
accelerating
facilitating
adsorption/desorption,
thus
enhancing
activity.
This
work
aims
inspire
further
design
highly
durable
with
tailored
electronic
properties
high‐purity
production.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 3, 2025
Electrochemical
conversion
has
been
regarded
as
an
ideal
technology
for
achieving
clean
and
sustainable
energy,
showing
significant
promise
in
addressing
the
increasingly
serious
energy
crisis
environmental
pollution.
Ru-containing
electrocatalysts
(RUCE)
outperform
other
precious
metals
due
to
elevated
intrinsic
activity
superior
cost-effectiveness,
developing
into
a
promising
candidate
electrochemical
reactions.
A
challenge
field
of
catalyst
discovery
lies
its
heavy
reliance
on
empirical
methods,
rather
than
approaches
that
are
rooted
rational
design
principles.
This
review
first
concentrates
catalytically
active
sites
critical
factors
governing
catalytic
performance
durability.
Then,
comprehensive
summary
multifunctional
modification
strategies
ranging
from
nanoscale
atomic
scale
is
explored
control
structure
improve
performance.
By
unveiling
roles
each
component
modified
RUCE
at
level,
their
identified
discussed
establish
structure-performance
relationship
catalysts.
Finally,
challenges
perspectives
Ru-based
materials
hydrogen,
oxygen,
nitrogen
reactions
presented
inspire
further
efforts
toward
understanding
meet
ever-growing
demand
future.
