Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 25, 2024
RuO2
has
been
considered
as
a
promising,
low-cost,
and
highly
efficient
catalyst
in
the
acidic
oxygen
evolution
reaction
(OER).
However,
it
suffers
from
poor
stability
due
to
inevitable
involvement
of
lattice
mechanism
(LOM).
Here,
we
construct
unique
metallene-based
core-skin
structure
unveil
that
OER
pathway
atomic
skin
can
be
regulated
LOM
an
adsorbate
by
altering
core
species
metallene
oxides
metallenes.
This
switch
is
achieved
without
sacrificing
number
active
sites,
enabling
Pd@RuO2
metallenes
exhibit
outstanding
activity
with
low
overpotential
189
mV
at
10
mA
cm–2,
which
54
lower
than
counterpart
PdO@RuO2
Additionally,
they
also
robust
negligible
decay
over
100
h
50
outperforming
most
reported
RuO2-based
catalysts.
Multiple
spectroscopic
analyses
theoretical
calculations
demonstrate
Pd-metallene
core,
acting
electron
donor,
increases
migration
energy
subsurface
atoms
optimizes
adsorption
intermediates
on
Ru
mechanism.
Such
offers
novel
way
for
tuning
catalytic
behaviors
electrocatalysts.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 2, 2025
The
construction
of
an
efficient
and
durable
oxygen
evolution
reaction
(OER)
electrocatalyst
through
a
simple
synthesis
strategy
is
crucial
for
the
hydrogen
produced
from
seawater
splitting.
However,
achieving
this
goal
remains
great
challenge.
Herein,
amorphous
Fe-doped
nickel
phosphate
(Fe-NixPO4)
as
high-performance
OER
electrocatalysts
alkaline
freshwater/seawater
splitting
presented
using
straightforward
co-precipitation
method
at
room-temperature.
Experimental
results
reveal
structural
reconstruction
Fe-NixPO4
into
NiOOH
decorated
with
PO4
3-.
collaborative
interplay
between
Ni2+
Fe3+,
along
decoration
3-,
can
effectively
modulate
electronic
environment
electrocatalyst.
Consequently,
optimized
exhibits
exceptional
activity,
requiring
overpotentials
359
422
mV
to
generate
1000
mA
cm-2
in
freshwater
seawater,
respectively.
Moreover,
also
displays
outstanding
stability
100
h
seawater.
This
research
presents
viable
approach
fabricating
efficiency
electrolysis.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 26, 2025
Improving
the
utilization
of
iridium
in
proton
exchange
membrane
(PEM)
water
electrolyzer
is
critical
reducing
their
cost
for
future
development.
Titanium
dioxide
(TiO2)
has
notable
electrochemical
stability
at
high
operating
potential
and
been
developed
as
a
promising
support
iridium-based
OER
nano-catalysts.
However,
limited
by
insufficient
conductivity,
content
on
TiO2
catalysts
normally
above
50
wt.%.
Herein,
provided
conductivity-enhanced
low-iridium-loading
PEMWE,
successfully
to
28
wt.%
regulation
electron
transport
pathway.
A
new
ionomer
distribution
strategy
then
applied
Ir@Pt@TiO2
catalyst
layer
release
sites
regulate
local
mass
pathways
anode.
This
work
reveals
that
catalyst-ionomer
interface
played
an
important
role
activity
anode
PEMWE.
Building
thin
uniform
supports
with
exposure
can
result
continuous
pathways,
promoting
bubble
escape,
exposing
more
effective
active
during
reaction
situations.
provides
novel
perspective
research
PEMWEs.
Inorganics,
Journal Year:
2025,
Volume and Issue:
13(4), P. 111 - 111
Published: April 3, 2025
Pt
catalysts
are
investigated
for
methanol
oxidation
in
direct
fuel
cells,
utilizing
the
electrochemical
quartz
microbalance
method
(EQCM)
with
exceptional
resolution
and
sensitivity.
were
deposited
onto
gas-diffusion
layer
of
carbon
using
stationary
potential
electrodeposition.
Physical
characterization
tests
performed.
SEM
results
showed
that
presented
dendrite
crystals
nanoscale
facets.
Cyclic
voltammetry
(CV)
demonstrated
current
density
reaction
highly
reached
1020
mA·cm−2
catalyst
by
EQCM.
The
crystal
structures
provide
much
area
high
catalytic
activity.
It
found
peak
decreased
after
five
cycles.
Furthermore,
response
frequency
adsorption
was
EQCM
compared
commercial
PtRu
catalysts.
more
rapidly
than
is
possible
small
organic
molecules
on
to
occur
during
electro-oxidation
COad
intermediates.
mechanism
preliminarily
discussed
measurement
combined
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 8, 2025
The
generation
of
solar
fuels
via
water
splitting
with
sunlight
requires,
among
others,
robust
and
efficient
electrodes
for
the
oxidation
reaction.
For
this
purpose,
combination
powerful
molecular
catalysts
graphitic
materials
has
been
shown
to
work
outstandingly
well.
However,
in
oxide-based
materials,
that
are
enormous
importance
as
conductive
or
semiconductive
either
do
not
transformed
into
corresponding
oxides.
Here,
we
use
a
supramolecular
strategy
based
on
self-assembled
bilayers
where
silanolate
long
alkyl
chains
is
bonded
electrode
surface
acts
platform
supramolecularly
interact
multiple
attached
catalyst.
In
manner,
catalyst
electrolyte
assembly
isolated
from
oxide
surface,
conferring
great
stability,
but
at
same
time,
they
sufficiently
close
so
electron
transfer
can
take
place
electrode.
Our
best
hybrid
anode
works
efficiently
pH
7
without
practically
any
activity
losses,
current
densities
0.40
mA/cm2
15
h,
giving
more
than
33,800
TONs
Faradaic
efficiency
over
92%
while
maintaining
intact
its
nature.
This
provides
successful
proof
concept
benefit
properly
combining
obtain
both
worlds.
Advanced Sustainable Systems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 10, 2025
Abstract
Hydrogen
production
by
electrochemical
water
splitting
is
considered
to
be
a
key
strategic
energy
technology,
and
proton
exchange
membrane
electrolyzers
(PEMWEs)
anion
(AEMWEs)
are
ideal
technologies
for
green
hydrogen
in
recent
years.
However,
PEMWEs
AEMWEs
lack
low‐cost
high‐performance
acidic
oxygen
evolution
reaction
(OER)
alkaline
(HER)
electrocatalysts
respectively,
limiting
their
large‐scale
development.
Recently,
ruthenium
(Ru)‐based
have
received
lot
of
attention
because
activity
better
than
that
commercial
catalysts
price
more
affordable,
showing
great
potential
OER
HER.
there
still
obstacles
Ru‐based
practical
applications
industrial
electrolyzers,
regulatory
strategies
need
developed
further
optimize
its
performance.
Herein,
comprehensive
review
presented
concerning
it.
First,
fundamental
principles
focus
the
basic
content
application
discussed.
Then,
summarized,
providing
detailed
analysis
elucidate
mechanisms,
properties,
electrolyzers.
Finally,
outlooks
prospects
challenges
future
proposed.
