Ru Single Atoms Anchored on Co3O4 Nanorods for Efficient Overall Water Splitting under pH‐Universal Conditions
Yongfang Zhou,
No information about this author
Yu Mao,
No information about this author
Cuizhu Ye
No information about this author
et al.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 2, 2025
Abstract
Single‐atom
catalysts
(SACs)
show
great
promise
for
electrocatalytic
water
splitting
due
to
their
exceptional
metal
atom
utilization
efficiency.
Herein,
it
is
demonstrated
that
Ru
single
atoms
(SAs)
anchored
on
Co
3
O
4
nanorod
arrays
(Ru
x
‐Co
,
where
the
loading
in
weight
percent)
afford
outstanding
performance
and
durability
oxygen
evolution
reaction
(OER),
hydrogen
(HER),
overall
across
a
wide
pH
range
(0.3–14).
8%
achieves
10
mA
cm⁻
2
at
overpotentials
of
only
214,
286,
138
mV
OER,
13,
72,
59
HER,
1
m
KOH,
0.1
PBS,
0.5
H
SO
respectively,
outperforming
benchmark
RuO
Pt/C
catalysts.
When
utilized
as
anode
cathode
an
anion
exchange
membrane
electrolyzer
(AEMWE),
cell
voltage
2.06
V
required
achieve
A
.
Chronopotentiometry
verified
possesses
excellent
stability
during
both
OER
HER
100
acidic,
neutral,
alkaline
media.
Density
functional
theory
(DFT)
calculations
reveal
abundant
Ru‐O‐Co
interfaces
shift
d‐band
center
from
−1.72
eV
(for
cluster/Co
)
−1.58
SA/Co
),
creating
more
energetically
favorable
pathways
HER.
Language: Английский
Molecular Anodes for Electrocatalytic Water Oxidation Based on Self-Assembled Bilayers Driven by Electron Transfer Mediators
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.
Language: Английский
Enhancing the Activity and Stability of Pt Nanoparticles Supported on Multiscale Porous Antimony Tin Oxide for Oxygen Reduction Reaction
Small Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 8, 2025
Abstract
Pt
nanoparticles
dispersed
on
carbon
supports
(Pt/C)
are
the
benchmark
oxygen
reduction
reaction
(ORR)
catalysts
in
proton
exchange
membrane
fuel
cells
(PEMFCs).
However,
their
widespread
application
is
hindered
by
severe
stability
degradation
under
high
potentials
and
acidic
environments,
primarily
due
to
support
corrosion.
To
address
this
challenge,
a
multiscale
template‐assisted
method
proposed,
combined
with
ethylene
glycol
reduction,
fabricate
supported
onto
porous
conductive
antimony
tin
oxides
(Pt/PT‐SSO).
Both
theoretical
experimental
approaches
have
shown
that
strong
interaction
between
markedly
accelerates
electron
transfer
optimizes
adsorption
strength
of
key
intermediates
surface.
Furthermore,
unique
structure
not
only
provides
an
ideal
platform
for
uniform
dispersion
but
also
greatly
enhances
confinement
effect,
effectively
preventing
aggregation.
As
result,
Pt/PT‐SSO
exhibits
superior
ORR
activity
durability
compared
commercial
Pt/C
catalysts.
Specifically,
its
mass
at
0.9
V
(vs
RHE)
reaches
0.617
A
mgPt⁻¹,
which
twice
Pt/C,
while
maintaining
outstanding
over
50
h.
Notably,
PEMFCs
utilizing
achieve
power
density
1.173
W
cm⁻
2
retain
94.9%
after
30,000
cycles
accelerated
testing.
Language: Английский
Recent Advances of Ruthenium‐Based Electrocatalysts for Industrial Water Electrolyzers
Wentao Zhou,
No information about this author
Chen Gu,
No information about this author
Lingbin Xie
No information about this author
et al.
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.
Language: Английский
Hollow RuO2 Fibers with B-Modification for Enhanced Water Oxidation Electrocatalysis in Both Acidic and Alkaline Media
Composites Communications,
Journal Year:
2025,
Volume and Issue:
unknown, P. 102452 - 102452
Published: May 1, 2025
Language: Английский
Single-Atom Ru-Triggered Lattice Oxygen Redox Mechanism for Enhanced Acidic Water Oxidation
Menghui Qi,
No information about this author
Xiangbowen Du,
No information about this author
Xiaoyun Shi
No information about this author
et al.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 15, 2025
Activating
the
oxygen
anionic
redox
presents
a
promising
avenue
for
developing
highly
active
evolution
reaction
(OER)
electrocatalysts
proton-exchange
membrane
water
electrolyzers
(PEMWE).
Here,
we
engineered
lattice-confined
Ru
single
atom
dispersed
on
lamellar
manganese
oxide
(MnO2)
cation
site.
The
strong
Ru-O
bond
induced
an
upward
shift
in
O
2p
band,
enhancing
metal-oxygen
covalency
and
reshaping
OER
mechanism
toward
lattice
oxidation
pathway
with
increased
activity.
In
situ
spectral
characterization
combined
density
functional
theory
(DFT)
calculations
revealed
that
electron
transfer
from
Mn
to
alleviates
Jahn-Teller
effect
within
MnO6
octahedral
structure,
stabilizing
lattice.
layered
Ru/MnO2
architecture
also
promotes
rapid
replenishment
of
vacancies,
preventing
structural
collapse.
As
result,
optimized
electrocatalyst
achieves
overpotential
only
179
mV
at
10
mA
cm-2
0.5
M
H2SO4,
along
exceptional
durability
over
1000
h
100
cm-2.
Moreover,
Ru/MnO2-based
PEM
device
requires
1.71
V
reach
1
A
shows
500
Language: Английский
Recent progress in Ru electrocatalyst design for acidic oxygen evolution reaction
Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 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.
Language: Английский
Distribution of Oxygen Vacancies in RuO2 Catalysts and Their Roles in Activity and Stability in Acidic Oxygen Evolution Reaction
Zhe Shang,
No information about this author
Hui Li
No information about this author
The Journal of Physical Chemistry Letters,
Journal Year:
2025,
Volume and Issue:
unknown, P. 5418 - 5428
Published: May 22, 2025
By
combining
density
functional
theory
(DFT)
calculations
and
the
cluster
expansion
(CE)
model
in
an
active-learning
framework,
we
comprehensively
studied
distribution
features
of
oxygen
vacancies
(OV's)
as
well
their
contributions
to
stability
activity
RuO2
catalyst
acidic
evolution
reaction
(OER).
The
results
show
that
OV's
prefer
be
located
at
bridge
sites
on
RuO2(110)
surface
next-nearest-neighbor
trans
positions
RuO6
octahedra
pairs
due
interactions
between
two
OV's,
high
concentrations
exhibit
a
continuous
zigzag
(110)
plane
RuO2.
vacancy
can
explained
by
charge
repulsion
low-valent
Ru
O,
which
is
referred
"heterovalent
ion-oxygen
exclusion
principle".
In
addition,
DFT
presence
cannot
improve
inherent
OER
specific
since
hinder
deprotonation
second
water
molecule.
Nevertheless,
suppressing
lattice
mechanism
(LOM)
path.
summary,
this
work
provides
deeper
insights
into
with
media
possible
way
performance
using
engineering.
Language: Английский