Nano Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 6, 2025
The
interfacial
electronic
structure
has
a
significant
influence
on
the
electrocatalytic
activity
and
durability
of
metal
oxide-supported
ruthenium
(Ru)
electrocatalysts
for
alkaline
hydrogen
oxidation
reaction
(HOR).
Herein,
we
optimize
by
tuning
Ru-O
bonds
within
MnO
lattice-confined
Ru
electrocatalysts,
creating
efficient
stable
sites
HOR.
formed
generate
localized
electrons
downshifted
d-band
center
atoms,
which
results
in
optimal
adsorption
ability
H*
OH*
together
with
reduced
energy
barrier
H2O
formation.
mass
achieves
1.26
mA
μgRu-1
0.1
M
KOH,
is
13.0-fold
8.0-fold
higher
than
that
contrast
Ru/C
(0.097
μgRu-1)
commercial
Pt/C
(0.158
μgPt-1),
respectively,
while
also
exhibiting
favorable
CO
tolerance.
This
work
highlights
rational
design
optimizing
to
enhance
HOR
activity.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(35)
Published: June 25, 2024
Abstract
Investigating
clean
and
sustainable
hydrogen
generation
from
water
splitting
requires
cost‐effective
highly
efficient
electrocatalysts
for
the
evolution
reaction
(HER).
Ruthenium
(Ru)‐based
heterostructure
catalysts
have
emerged
as
promising
alternatives
to
precious
Pt,
offering
significant
potential
overcome
current
bottlenecks.
Recent
advancements
in
Ru‐based
focused
on
achieving
a
balance
between
catalytic
activity
stability.
An
overview
of
these
developments
provides
insights
into
mechanisms
facilitates
development
novel
catalysts.
This
review
begins
with
an
exploration
enhanced
catalysts,
followed
by
critical
summary
synthetic
strategies
employed
fabricate
their
performances
HER.
Attention
is
then
directed
experimental
endeavors
aimed
at
enhancing
HER
performance
Finally,
opportunities
challenges
developing
perspectives
material
design
synthesis
are
discussed.
Through
discussions,
comprehensive
understanding
inspiring
future
research
directions
aim
provide.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(28)
Published: April 26, 2024
Abstract
Ruthenium
(Ru)
is
considered
a
promising
candidate
catalyst
for
alkaline
hydroxide
oxidation
reaction
(HOR)
due
to
its
hydrogen
binding
energy
(HBE)
like
that
of
platinum
(Pt)
and
much
higher
oxygenophilicity
than
Pt.
However,
Ru
still
suffers
from
insufficient
intrinsic
activity
CO
resistance,
which
hinders
widespread
use
in
anion
exchange
membrane
fuel
cells
(AEMFCs).
Here,
we
report
hybrid
(RuCo)
NC+SAs
/N‐CNT
consisting
dilute
RuCo
alloy
nanoparticles
atomically
single
Co
atoms
on
N‐doped
carbon
nanotubes
The
exhibits
state‐of‐the‐art
with
high
mass
7.35
A
mg
−1
.
More
importantly,
when
used
as
an
anode
AEMFCs,
peak
power
density
reaches
1.98
W
cm
−2
,
one
the
best
AEMFCs
properties
noble
metal‐based
catalysts
at
present.
Moreover,
has
superior
long‐time
stability
resistance.
experimental
functional
theory
(DFT)
results
demonstrate
alloying
monodecentralization
exotic
element
greatly
modulates
electronic
structure
host
Ru,
thus
optimizing
adsorption
H
OH
promoting
surface,
then
stimulates
HOR
tolerance
catalyst.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 10, 2025
Abstract
Designing
heterogeneous
interface
to
enhance
the
kinetics
for
electrocatalysts
is
a
highly
efficient
but
challenging
pathway
toward
hydrogen
evolution
reaction
(HER)
in
water
electrolysis.
Herein,
coupling
of
CeO
2
quantum
dots
onto
porous
Ru
aerogel
through
interfacial
Ru‐O‐Ce
bridge
proposed
construct
‐Ru
as
superior
HER
electrocatalyst
with
ultra‐low
overpotentials.
In
situ
characterizations
and
theoretical
calculations
reveal
electron
distribution
at
boost
bonding
sites,
faster
adsorption
dissociation
sites
kinetics.
Furthermore,
employed
excellent
cathodes
both
acidic
alkaline
electrolyzers
ampere‐level
current
density
stably
operated
over
500
hours.
Thus,
synergistic
effect
tunes
catalytic
mechanism
reinforces
activity,
realizing
generation
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(25)
Published: April 5, 2024
Abstract
Strengthening
OH
adsorption
on
electrocatalyst
is
crucial
to
promote
the
rate‐determining
water
dissociation
step
of
alkaline
hydrogen
evolution
reaction
(HER),
whereas
too‐intensified
will
poison
active
sites
instead.
This
dilemma
remains
one
major
challenges
for
improving
electrocatalysts’
HER
activities.
Herein,
a
surprising
finding
that
strongly
adsorbed
an
ultrafine
quinary
PtCoCuNiZn
nanoalloy
can
be
facilely
desorbed
via
unique
gradient
desorption
pattern
reported,
which
tremendously
boosts
its
activity.
Theoretical
simulations
unravel
possesses
versatile
metal
adsorbing
and
gradiently
transferred
desorb
from
with
moderate
energy
barriers
each
transfer
desorption.
In
meanwhile,
mode
also
experimentally
evidenced
by
in
situ
Raman
spectroscopy
cyclic
voltammetry
measurements.
offers
fresh
opportunity
expedite
without
compromising
strength
electrocatalysts,
thus
maximally
promotes
their
properties
unlocks
full
potential
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Aug. 8, 2024
The
development
of
highly
efficient
and
durable
alkaline
hydrogen
evolution
reaction
(HER)
catalysts
is
crucial
for
achieving
high-performance
practical
anion
exchange
membrane
water
electrolyzer
(AEMWE)
at
ampere-level
current
density.
Herein,
we
report
a
design
concept
by
employing
Ga
single
atoms
as
an
electronic
bridge
to
stabilize
the
Ru
clusters
boosting
HER
performance
in
AEMWE.
Experimental
theoretical
results
collectively
reveal
that
bridged
sites
trigger
strong
metal-support
interaction
homogeneous
distribution
with
high
density,
well
optimize
Ru-H
bond
strength
due
electron
transfer
between
enhanced
intrinsic
activity.
Moreover,
oxophilic
near
tend
adsorb
hydroxyl
species
accelerate
dissociation
sufficient
proton
supplement
medium.
Ru-Ga
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Nov. 22, 2024
The
development
of
efficient
and
robust
catalysts
for
hydrogen
evolution
reaction
is
crucial
advancing
the
economy.
In
this
study,
we
demonstrate
that
ultra-low
coordinated
hollow
PtRuNi-Ox
nanocages
exhibit
superior
catalytic
activity
stability
across
varied
conditions,
notably
surpassing
commercial
Pt/C
catalysts.
Notably,
achieve
current
densities
10
mA
cm−2
at
only
19.6
±
0.1,
20.9
21.0
0.1
mV
in
alkaline
freshwater,
chemical
wastewater,
seawater,
respectively,
while
maintaining
satisfied
with
minimal
loss
after
40,000
cycles.
situ
experiments
theoretical
calculations
reveal
coordination
Pt,
Ru,
Ni
atoms
creates
numerous
dangling
bonds,
which
lower
water
dissociation
barrier
optimizing
adsorption.
This
research
marks
a
notable
advancement
precise
engineering
atomically
dispersed
multi-metallic
centers
energy-related
applications.
Efficient
are
key
to
economy,
particularly
reaction.
Here,
authors
report
offer
comparable
performance
both
freshwater
wastewater
conditions.
