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.
Advanced Sustainable Systems,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 4, 2025
Abstract
Extracting
hydrogen
by
electrochemical
water
splitting
is
the
most
important
pathway
for
green
production
at
present
whereas
corresponding
anodic
oxygen
evolution
reaction
(OER)
catalysts
usually
suffer
from
harsh
high‐potential
conditions,
either
acidic
or
alkaline,
leading
to
performance
degradation
and
surface
reconstruction.
Importantly,
reconstruction
upon
some
may
lead
a
misinterpretation
of
true
active
centers,
thereby
impeding
rational
design
catalysts.
Consequently,
understanding
dynamic
catalyst
during
OER
essential.
This
paper
reviews
recent
research
progress
on
both
precious‐metal
non‐precious‐metal
across
wide
pH,
i.e.,
under
alkaline
highlights
differences
between
them.
In
addition,
an
analysis
underlying
causes
impact
factors
that
greatly
influence
these
processes
are
presented.
Finally,
based
discussions,
perspectives
proposed.
Journal of Materials Chemistry A,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
review
surveys
recent
advances
in
Ru-based
electrocatalysts
for
the
acidic
OER,
focusing
on
strategies
to
enhance
activity
and
stability,
mitigate
Ru
dissolution
performance
degradation,
inform
design
of
robust
PEMWE.
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).
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.
