Applied Physics Letters,
Год журнала:
2024,
Номер
125(7)
Опубликована: Авг. 12, 2024
The
alkaline
hydrogen
evolution
reaction
(HER)
for
industrial
generation
is
a
promising
way
to
achieve
intermittent
energy
storage.
However,
challenges,
such
as
the
insufficient
supply
of
adsorbed
atoms
(*H)
and
slow
bubble
dynamics,
hinder
development
HER.
Here,
we
report
cooperative
strategy
by
leveraging
both
microscopic
enhanced
electric
field
macroscopic
efficient
traffic
evolution,
demonstrated
through
NiCoP
nanotips
on
NiP
nanorods
(NiCoP-tip@NiP).
Specifically,
during
HER
process,
can
accumulate
large
number
electrons,
enhancing
Stern
layer.
This
accelerates
dissociation
water,
resulting
in
favorable
*H
Simultaneously,
confined
space
between
hinders
growth
bubbles
generated
at
tips.
Newly
formed
will
push
out
existing
bubbles,
thus
accelerating
gas
release.
As
result,
NiCoP-tip@NiP
exhibits
low
overpotential
300
mV
1000
mA
cm−2
maintains
stable
operation
over
90
h
approximately
processes.
provides
profound
insights
generation.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
Energy
electrocatalytic
reactions
such
as
hydrogen
evolution
reaction,
oxygen
reduction
nitrogen
carbon
etc.,
are
important
to
solve
the
current
energy
shortage
and
increasing
environmental
problems.
Developing
novel
efficient
catalyts
for
these
has
become
an
essential
urgent
issue.
Catalysts
incorporating
bridge‐oxygen
bond
have
received
attention
due
their
superior
conductivity
stability,
which
favorable
optimizing
reaction
mechanism
improving
kinetics.
This
paper
provides
a
comprehensive
review
encompassing
concept
of
bond,
means
characterization,
activity
in
electrocatalysis
effect
on
catalytic
performance.
Through
this
review,
it
is
expected
furnish
valuable
reference
rational
design
catalysts
featuring
structure
across
diverse
reactions.
The Journal of Physical Chemistry Letters,
Год журнала:
2024,
Номер
15(9), С. 2428 - 2435
Опубликована: Фев. 23, 2024
Catalytic
performance
of
single-atom
catalysts
(SACs)
relies
fundamentally
on
the
electronic
nature
and
local
coordination
environment
active
site.
Here,
based
a
machine-learning
(ML)-aided
density
functional
theory
(DFT)
method,
we
reveal
that
intrinsic
dipole
in
Janus
materials
has
significant
impact
catalytic
activity
SACs,
using
2D
γ-phosphorus
carbide
(γ-PC)
as
model
system.
Specifically,
around
site
is
key
degree
to
tune
can
be
used
an
important
descriptor
with
high
feature
importance
17.1%
predicting
difference
adsorption
free
energy
(ΔGO*
–
ΔGOH*)
assess
oxygen
evolution
reaction.
As
result,
SACs
tuned
by
dipole,
stark
contrast
those
external
stimuli
strategies
previously
used.
These
results
suggest
engineering
revolutionary
DFT-ML
hybrid
scheme
are
novel
approaches
for
designing
high-performance
catalysts.
The
controllable
construction
of
complex
metal-organic
coordination
polymers
(CPs)
merits
untold
scientific
and
technological
potential,
yet
remains
a
grand
challenge
one-step
modulating
simultaneously
valence
states
metals
topological
morphology.
Here,
thiocyanuric
acid
(TCA)-triggered
strategy
is
presented
to
rapid
synthesis
double-crystalline
Prussian
blue
analogue
hetero-superstructure
(PBA-hs)
that
comprises
Co
Applied Physics Letters,
Год журнала:
2024,
Номер
124(23)
Опубликована: Июнь 3, 2024
The
oxygen
evolution
reaction
(OER)
activity
of
Ni-based
oxyhydroxides
greatly
hinges
on
their
phase
structures,
which
are
mainly
γ
and
β
phases:
the
former
has
higher
intrinsic
than
latter.
However,
it
is
still
a
grand
challenge
to
purposefully
generate
phase,
rather
phase.
Here,
we
propose
cation-doping
strategy
by
taking
Zn-doped
NiFeP/N-doped
C
(Z-NFP/N-C)
precatalyst
as
model.
In
contrast
case
NFP/N-C
that
can
only
be
reconstructed
into
β-NiFeOOH,
Zn
dopant
will
induce
formation
γ-NiFeOOH
during
an
electrochemical
process.
Specifically,
doped
cation
promote
dissolution
NiFeP
redeposition
NiFeOOH
surface.
Simultaneously,
defects
generated
leaching
force
surrounding
Ni
valence
state
rise
for
charge
balance
attract
more
K+
in
solution
intercalate
interlayer
NiFeOOH,
resulting
γ-NiFeOOH.
As
result,
γ-NiFeOOH/Z-NFP/N-C
exhibits
superior
OER
performance:
low
overpotential
216
mV
at
10
mA
cm−2
satisfactory
stability
(100
h
17
cm−2).
Our
study
offers
practical
approach
produce
highly
active
“true
catalyst”
efficient
water
splitting.
Applied Physics Letters,
Год журнала:
2025,
Номер
126(15)
Опубликована: Апрель 1, 2025
NiFe-based
(oxy)hydroxides
are
promising
oxygen
evolution
reaction
(OER)
catalysts
but
suffer
from
severe
Fe
dissolution
under
operational
conditions,
rapidly
resulting
in
a
significant
drop
activity.
Here,
we
report
quasi-in
situ
redeposition
strategy
enabled
by
Ce
doping
to
realize
rapid
capture
and
deposition
of
species
on
the
surface
NiFeOOH.
During
OER
process,
dissolved
ions,
owing
their
large
ionic
radius
strong
electrostatic
attraction,
enhance
OH−
concentration
at
solid–liquid
interface,
accelerating
suppressing
leaching
into
electrolyte.
This
significantly
enhances
activity
durability
high-current
density.
The
optimized
Ce-NiFeOOH
catalyst
delivers
an
overpotential
294
mV
1000
mA
cm−2
maintains
excellent
stability
500
cm−2.
offers
feasible
direction
design
highly
stable
transition-metal-based
for
OER.
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(19), С. 6605 - 6615
Опубликована: Янв. 1, 2024
A
two-dimensional
Z-scheme
Al-TCPP/In
2
S
3
heterojunction
demonstrated
an
enhanced
photocatalytic
H
O
yield
in
pure
water.
Additionally,
the
film
samples
allowed
for
easy
recovery
from
system
and
excellent
stability.
