Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 23, 2024
Abstract
As
the
demand
for
cleaner
energy
becomes
a
paramount
objective
of
sustainable
development,
advancement
cutting‐edge
engineered
materials
wide
range
applications
increasingly
vital.
Tailoring
catalyst
properties
through
precise
design
and
electronic
state
tuning
is
essential
adapting
these
to
large‐scale
applications.
Given
this,
an
effective
fine‐tuning
(EFT)
strategy
presented
optimize
structures
single‐atom
Zn
site
Ru
species,
synergistically
enhancing
both
electrocatalytic
oxygen
reduction
reaction
(ORR)
hydrogen
evolution
(HER).
Benefiting
from
interaction
between
species
anchored
on
hierarchically
layered
nanosheets
isolated
atoms
(Ru@Zn‐SAs/N‐C),
exhibits
superior
ORR
HER
activities
compared
benchmark
Pt/C
catalyst.
X‐ray
absorption
spectroscopy
density
functional
theory
(DFT)
calculations
confirm
novel
EFT
effect
single
that
enables
Ru@Zn‐SAs/N‐C
approaches
optimal
scaling
relation
*
OOH
OH,
breaking
universal
limitation.
Additionally,
G
H*
value
positions
near
apex
theoretical
volcano
model.
This
work
provides
innovative
avenue
regulating
localization
catalytic
active
centers
by
virtue
carbon
substrate
offers
valuable
insights
designing
high‐efficiency
electrocatalysts.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 2, 2024
Abstract
Exploring
an
efficient
nonnoble
metal
catalyst
for
hydrogen
evolution
reaction
(HER)
is
critical
industrial
alkaline
water
electrolysis.
However,
it
remains
a
great
challenge
due
to
the
additional
energy
required
H─OH
bond
cleavage
and
lack
of
enough
H
2
O
adsorption
sites
most
catalysts.
Herein,
integration
oxophilic
Eu
3
with
NiCo
alloy
evoked
multisite
synergism
facilitate
dissociation
HER
proposed.
The
optimized
‐NiCo
exhibits
excellent
activity
low
overpotential
only
60
mV
at
10
mA
cm
−2
good
electrochemical
stability,
which
superior
that
‐free
comparable
benchmark
Pt/C.
key
roles
on
enhanced
performance
are
identified
by
in
situ
Raman
spectroscopy
theoretical
calculations.
It
discovered
strong
oxophilicity
facilitates
breakage
bonding
while
evoking
electron
redistribution
/NiCo
interface
accelerating
Volmer
step
HER.
Furthermore,
obtained
as
both
anode
cathode
displays
overall
water‐splitting
stability
1.0
M
KOH
solution.
believed
this
study
provides
important
inspiration
design
high‐performance
electrocatalysts
toward
based
rare‐earth
materials.
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
Molecules,
Год журнала:
2025,
Номер
30(6), С. 1205 - 1205
Опубликована: Март 7, 2025
This
study
is
based
on
the
strategies
of
composite
and
element
doping.
Herein,
P-MoS2/rGO
materials
were
synthesized
using
a
solvent-assisted
hydrothermal
method.
The
MoS2
nanosheets
uniformly
vertically
grown
rGO;
meanwhile,
optimized
structure
was
achieved
by
P
doping,
resulting
in
improved
catalytic
performance
structural
stability.
Under
alkaline
conditions,
catalyst
exhibits
good
electrocatalytic
activity,
demonstrating
Tafel
slope
70.7
mV
dec−1
an
overpotential
172.8
at
10
mA/cm2.
Notably,
even
after
3000
consecutive
LSV
tests,
curves
still
show
high
degree
overlap,
indicating
exceptional
Hydrogen
energy,
known
for
its
elevated
combustion
enthalpy
and
the
generation
of
clean
water
upon
combustion,
represents
a
energy
source
with
valuable
potential
applications.
Water
electrolysis
hydrogen
production
has
emerged
as
an
effective
environmentally
friendly
green
synthesis
methodology.
However,
conventional
process
is
typically
performed
under
constant
current
or
conditions,
resulting
in
less-than-ideal
rates
due
to
limitations
mass
transport.
The
adjustment
catalyst
interface
enhancement
transfer
are
achievable
dynamic
electrodes.
Herein,
electrocatalytic
evolution
performance
using
MoS2
model
electrodes
was
investigated.
can
be
enhanced
by
electrodes,
achieving
maximum
increase
240%
rate.
Improved
observed
when
employing
other
two-dimensional
materials
including
Pt-MoS2
Mo2C.
demonstrates
most
significant
rate
(400%
enhancement).
Through
mechanistic
analysis,
essence
enhancing
lies
bubbles
separation
varied
electrochemical
double
layer
facilitate
This
work
provides
method
activity
electrode.
