ChemCatChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 7, 2024
Abstract
Boosting
the
reaction
stability
without
sacrificing
activity
and
cost
is
extremely
important
but
full
of
challenges
for
RuO
2
‐based
oxygen
evolution
catalysts.
Herein,
porous
B‐site
substituted
Y
[Mn
0.2
Ru
0.8
]
O
7
(p‐Y
)
pyrochlore
toward
innovatively
synthesized.
The
formed
meso‐/macroporous
structure
can
increase
specific
surface
area
corresponding
active
sites,
meanwhile,
Mn‐substitution
modulate
electronic
structure,
stabilize
morphology,
reduce
dosage
species.
Interestingly,
p‐Y
performs
50
h
stable
operation,
significantly
outperforming
commercial
(CM)
counterpart
with
less
than
life.
Furthermore,
required
overpotential
to
achieve
10
mA
cm
−2
only
266
mV,
accompanied
favorable
kinetics
catalyst
utilization.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
Oxygen-defective
RuO
x
nanoparticles
are
synthesized
through
a
one-step
sol–gel
process,
which
show
outstanding
activity
and
stability
for
acidic
oxygen
evolution
reaction
at
high
current
densities
due
to
the
predominant
adsorbate
mechanism.
ChemCatChem,
Journal Year:
2024,
Volume and Issue:
16(21)
Published: July 25, 2024
Abstract
Developing
highly
efficient
and
stable
electrocatalysts
in
acidic
media
is
essential
for
proton
exchange
membrane
water
electrolyzers
(PEMWEs).
Especially
oxygen
evolution
reaction
(OER),
high
overpotential
needed
to
overcome
the
thermodynamic
energy
barrier
of
splitting.
Herein,
we
report
a
high‐efficiency
self‐supported
ternary
alloy
OER
catalyst
with
activity
good
durability
electrolytes
by
simple
electrodeposition
method.
The
as‐prepared
electrocatalyst
consists
Ru,
Au,
Mn
which
deposited
on
carbon
fiber
paper
(denoted
as
RuAuMn‐CFP).
RuAuMn‐CFP
exhibits
superior
only
requires
an
131
mV
at
10
mA
cm
−2
outstanding
stability
30
h
(10
)
media,
outperforms
commercial
Ru/C
Ir/C
catalysts.
Besides,
140
mV,
exhibited
remarkable
mass
29.63
mA/mg
OER.
It
7.9
times
23.8
higher
than
catalysts
(3.73
mA/mg,
1.24
respectively).
ChemCatChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 7, 2024
Abstract
Boosting
the
reaction
stability
without
sacrificing
activity
and
cost
is
extremely
important
but
full
of
challenges
for
RuO
2
‐based
oxygen
evolution
catalysts.
Herein,
porous
B‐site
substituted
Y
[Mn
0.2
Ru
0.8
]
O
7
(p‐Y
)
pyrochlore
toward
innovatively
synthesized.
The
formed
meso‐/macroporous
structure
can
increase
specific
surface
area
corresponding
active
sites,
meanwhile,
Mn‐substitution
modulate
electronic
structure,
stabilize
morphology,
reduce
dosage
species.
Interestingly,
p‐Y
performs
50
h
stable
operation,
significantly
outperforming
commercial
(CM)
counterpart
with
less
than
life.
Furthermore,
required
overpotential
to
achieve
10
mA
cm
−2
only
266
mV,
accompanied
favorable
kinetics
catalyst
utilization.
