Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 4, 2025
RuO2
with
high
intrinsic
activity
for
water
oxidation
is
a
promising
alternative
to
IrO2
in
proton
exchange
membrane
(PEM)
electrolyzer,
but
it
suffers
from
long-term
stability
issues
due
overoxidation.
Here,
we
report
sub-4
nm
Ru-RuO2
Schottky
nanojunction
(Ru-RuO2-SN)
prepared
by
microwave
reaction
that
exhibits
and
both
three-electrode
systems
PEM
devices.
The
lattice
strain
charge
transfer
induced
the
metal-oxide
SN
increase
work
function
of
Ru-RuO2-SN,
optimize
local
electronic
structure,
reduce
desorption
energy
metal
site
oxygen-containing
intermediates;
as
result,
leads
oxide
path
mechanism
(OPM)
inhibits
excessive
surface
ruthenium.
Ru-RuO2-SN
requires
only
165
mV
overpotential
obtain
10
mA·cm-2
1400
h
without
obvious
degradation,
achieving
number
(6.7
×
106)
matching
iridium-based
catalysts.
In
electrolyzer
an
anode
catalyst,
1.6
V
needed
reach
1.0
A·cm-2
shows
at
100
1100
500
h.
was
analyzed
density
functional
theory
calculations.
This
reports
durable,
pure
Ru-based
water-oxidation
catalyst
provides
new
perspective
development
efficient
Electrochemical
acidic
oxygen
evolution
reaction
(OER)
is
an
important
part
for
water
electrolysis
utilizing
a
proton
exchange
membrane
(PEM)
apparatus
industrial
H
Materials Chemistry Frontiers,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
A
phosphide
heterojunction
has
been
developed
as
an
efficient
catalyst
toward
methanol-assisted
seawater
splitting
with
good
activity
and
high
durability.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(47)
Опубликована: Авг. 12, 2024
Abstract
In
acidic
proton
exchange
membrane
water
electrolysis
(PEMWE),
the
anode
oxygen
evolution
reaction
(OER)
catalysts
rely
heavily
on
expensive
and
scarce
iridium‐based
materials.
Ruthenium
dioxide
(RuO
2
)
with
lower
price
higher
OER
activity,
has
been
explored
for
similar
task,
but
restricted
by
poor
stability.
Herein,
we
developed
an
anion
modification
strategy
to
improve
performance
of
RuO
in
media.
The
designed
multicomponent
catalyst
based
sulfate
anchored
/MoO
3
displays
a
low
overpotential
190
mV
at
10
mA
cm
−2
stably
operates
500
hours
very
degradation
rate
20
μV
h
−1
electrolyte.
When
assembled
PEMWE
cell,
this
as
shows
excellent
stability
150
h.
Experimental
theoretical
results
revealed
that
MoO
could
stabilize
surface
suppress
its
leaching
during
OER.
Such
‐anchored
not
only
reduces
formation
energy
*OOH
intermediate
,
also
impedes
both
Ru
lattice
loss,
thereby
achieving
high
activity
exceptional
durability.
ACS Materials Letters,
Год журнала:
2024,
Номер
6(7), С. 3016 - 3024
Опубликована: Июнь 13, 2024
Developing
ruthenium-based
(Ru-based)
catalysts
with
a
heterointerface
is
essential
to
improving
the
acidic
oxygen
evolution
reaction
(OER)
performance.
In
this
study,
we
first
prepared
RuO2/CoMnO3
nanosheet
by
solid-phase
pyrolysis,
featuring
low
Ru
content,
and
presented
high
OER
mass
activity
(1742.9
A
gRu–1
at
1.53
V)
superior
stability
(500
h
10
mA
cm–2)
in
0.5
M
H2SO4
under
three-electrode
system.
Notably,
Co
Mn
sites
facilitated
electron
transfer
through
bridge
avoid
overoxidation,
as
proved
increase
average
surface
oxidation
state
(SOS)
of
insignificant
change
SOS
after
chronopotentiometry
test.
Moreover,
can
reduce
energy
barrier
restrain
participation
lattice
oxygen.
This
work
indicates
significant
potential
employing
well-supported
an
adjustable
prominently
improve
Ru-based
catalysts.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 2, 2025
Abstract
Exploring
advanced
electrolysis
techniques
for
attaining
scene‐adaptive
and
on‐site
green
H
2
production
is
an
imperative
matter
of
utmost
practical
significance
but
grand
challenge
remains.
Herein,
drawn
inspiration
from
a
spontaneous
hydrazine‒H
O
galvanic
cell
configured
on
low‐valence
Ru
single
atoms‐loaded
Mo
C
electrode
(Ru
SA
/v‐Mo
C),
alternative
energy
solution
utilizing
self‐powered
electrochemical
hydrazine
splitting
(N
4
→
2H
+
N
)
instead
the
stereotyped
electricity‐consumed
water
proposed.
This
highlights
pH‐decoupled
primary
battery
with
notable
open‐circuit
voltage
1.37
V
density
up
to
358
Wh
g
N2H4
−1
,
which
powerfully
propels
alkaline
cell,
leading
bilateral
harvest
remarkable
rate
18
mol
h
m
−2
i.e.,
403.2
L
setting
new
record
self‐sustaining
electricity‐powered
systems.
The
success
this
further
decoded
by
tandem
theoretical
in
situ
spectroscopic
studies,
cross‐verifying
Ru‒Mo
dual‐site
synergy
streamlining
overall
barriers,
thereby
enhancing
kinetics
reactions.
pioneering
work,
showcasing
free
both
external
feedstock
inputs,
opens
horizon
way
ultimate
solution.
Materials Horizons,
Год журнала:
2025,
Номер
12(6), С. 1757 - 1795
Опубликована: Янв. 1, 2025
Noble
metal-based
oxide
electrocatalysts
are
essential
for
the
development
of
H
2
production
technology
by
water
electrolysis,
and
this
review
summarises
recent
research
progress
noble
metal
oxides
in
field
electrolysis.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(35), С. 23297 - 23314
Опубликована: Янв. 1, 2024
In
this
review
paper,
we
emphatically
summarize
the
improvement
strategies
of
Ru-based
acidic
OER
catalysts
and
their
application
in
PEMWEs.
Further
challenges
directions
development
are
also
speculated.
