Confined RuP2 Nanoparticles in N,P,S‐Tridoped Carbon as Superior Electrocatalyst for pH‐Wide Hydrogen Evolution
Chemistry - An Asian Journal,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 14, 2025
Abstract
Hydrogen
has
been
deemed
as
the
ideal
energy
source
and
carrier
due
to
its
unmatched
efficiency
sustainability.
Nevertheless,
there
is
a
pressing
need
develop
cost‐effective
materials
replace
costly
Pt
in
hydrogen
evolution
reaction
(HER),
electrocatalysts
with
low
overpotential
robust
stability
under
various
conditions
particularly
significant
concern.
In
this
study,
straightforward
effective
approach
was
proposed
for
precise
synthesis
of
RuP
2
nanoparticles
encapsulated
N,
P,
S‐tridoped
carbon,
which
involves
utilizing
zinc
pyrithione,
phytic
acid
Ru
salt
starting
materials.
The
effect
different
loadings
on
morphology
structures
composite
catalysts
examined
carefully.
obtained
composites
exhibit
superior
alkaline
activity
surpassing
commercial
Pt/C
comparable
acidic
neutral
well
excellent
pH‐wide
stability.
DFT
computations
reveal
integration
tridoped
carbon
can
tailor
electronic
structure
active
sites
by
interfacial
electron
transfer,
thus
optimizing
adsorption
promoting
HER
activity.
benign
graphitization
doped
porous
ensure
smooth
charge
mass
transfer
during
process.
methods
presented
work
offer
promising
alternative
practical
hydrogen‐related
applications.
Язык: Английский
Cobalt-Decorated Carbonized Wood as an Efficient Electrocatalyst for Water Splitting
Catalysts,
Год журнала:
2025,
Номер
15(5), С. 503 - 503
Опубликована: Май 21, 2025
The
efficient
mass
transport
and
enhanced
accessibility
of
active
sites
are
crucial
for
high-performance
electrocatalysts
in
water
splitting.
Inspired
by
the
hierarchical
structure
natural
wood,
we
engineered
a
monolithic
electrocatalyst,
cobalt
nanoparticles
encapsulated
nitrogen-doped
carbon
layers
on
carbonized
wood
(Co@NC/CW),
carbonizing
to
create
three-dimensional
framework
with
vertically
aligned
macropores.
unique
architecture
encapsulates
within
situ-grown
graphene
wood-derived
microchannels,
facilitating
ultrafast
electrolyte
infusion
anisotropic
electron
transport.
As
result,
optimized
freestanding
Co@NC/CW
electrode
exhibits
remarkable
bifunctional
activity,
achieving
overpotentials
403
mV
227
oxygen
evolution
reaction
(OER)
hydrogen
(HER),
respectively,
at
current
density
50
mA
cm−2.
Furthermore,
integrated
hybrid
electrolyzer
combining
HER
OER
delivers
an
impressive
A
cm−2
cell
voltage
1.72
V
while
maintaining
Faradaic
efficiency
near
99.5%
sustaining
long-term
stability
over
120
h
continuous
operation.
also
demonstrates
performance
complete
decomposition
alkaline
seawater,
underscoring
its
potential
scalable
applications.
This
catalyst
design
not
only
leverages
porosity
but
offers
sustainable
platform
advanced
electrochemical
systems.
Язык: Английский