Catalysts,
Journal Year:
2024,
Volume and Issue:
14(8), P. 491 - 491
Published: July 31, 2024
Tuning
the
chemical
and
structural
environment
of
Ru-based
nanomaterials
is
a
major
challenge
for
achieving
active
stable
hydrogen
evolution
reaction
(HER)
electrocatalysis.
Here,
we
anchored
ultrafine
Ru
nanoparticles
(with
size
~4.2
nm)
on
hierarchical
Ni2P
array
(Ru/Ni2P)
to
enable
highly
efficient
HER.
The
promoter
weakened
adsorption
proton
sites
by
accepting
electrons
from
nanoparticles.
Moreover,
endowed
catalysts
with
large
surface
area
open
structure.
Consequently,
as-fabricated
Ru/Ni2P
electrode
displayed
low
overpotential
57
164
mV
at
HER
current
densities
10
50
mA
cm−2,
respectively,
comparable
state-of-the-art
Pt
catalysts.
can
operate
stably
96
h
cm−2
without
performance
degradation.
After
pairing
commercial
RuO2
anode,
anode
catalyzed
overall
water
splitting
1.73
V
density
which
was
0.16
lower
than
its
Ni
counterpart.
In
situ
Raman
studies
further
revealed
optimized
Ru-active
promoter,
thus
enhancing
electrocatalytic
performance.
eScience,
Journal Year:
2024,
Volume and Issue:
4(6), P. 100272 - 100272
Published: April 26, 2024
Strong
metal−support
interaction
(SMSI),
namely
the
strong
electronic
and
structural
between
metal
nanoparticles
supports,
one
of
most
typical
synergetic
catalytic
effects
in
composite
catalysts,
has
been
found
critically
important
design
catalyst
for
thermocatalysis
past.
Recently,
however,
great
progress
SMSI-based
made
electrocatalysis,
such
as
electrocatalyst
electrocatalytic
mechanism
investigations.
To
better
understand
nature
effect
assisting
further
development
electrocatalysts,
a
comprehensive
in-depth
overview
highlighting
discussing
recent
advances
SMSI
electrocatalysis
is
necessary
highly
desirable
but
still
absent.
Herein,
this
review
firstly
presents
various
strategies
designing
constructing
catalysts
featuring
SMSI.
Further
from
perspectives
characterization
techniques
towards
electron
structure,
local
interfacial
morphological
features
active
sites
have
summarized
detail.
Importantly,
single-
bi-functional
electrocatalysts
effects,
key
roles
during
reactions
are
emphasized.
Finally,
challenges
prospects
discussed
out-looked
to
highlight
remaining
issues
future
electrocatalysts.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(19)
Published: Jan. 7, 2024
Abstract
Active
and
durable
catalysts
for
hydrogen
evolution
reaction
(HER)
are
of
great
significance
developing
renewable
energy.
Herein,
crystalline/amorphous‐Ru/VO
x
(c/a‐Ru/VO
)
heterogeneous
conceived,
in
which
the
amorphous
VO
exposes
more
active
sites
enhances
charge
transport
compared
with
counterpart
a
crystal
phase
structure,
strengthening
electronic
interaction
between
metal‐support.
As
expected,
c/a‐Ru/VO
‐500
heat
treatment
at
500
°C
exhibits
excellent
HER
performance
under
alkaline
conditions,
an
overpotential
only
33
mV
10
mA
cm
−2
small
Tafel
slope
(27
dec
−1
),
superior
to
commercial
platinum/carbon
(Pt/C)
catalysts.
Particularly,
its
mass
activity
(0.335
A
mg
Ru
is
1.5
times
greater
than
that
Pt/C
(0.224
Pt
50
mV.
Also,
it
shows
good
industrial
application
prospects
through
tests
high
temperature,
alkalinity,
large
current
conditions.
Theoretical
calculations
unveil
there
exists
redistribution
heterointerfaces,
makes
surface
takes
on
electron‐deficient
state,
resulting
optimization
adsorption
desorption
different
intermediates.
This
optimized
behavior
effectively
reduces
thermodynamic
energy
barrier,
allowing
catalyst
greatly
enhanced
performance.
The
exploration
provides
promising
strategy
designing
efficient
HER.
Carbon Energy,
Journal Year:
2024,
Volume and Issue:
6(9)
Published: April 17, 2024
Abstract
Designing
high‐performance
and
low‐cost
electrocatalysts
for
oxygen
evolution
reaction
(OER)
is
critical
the
conversion
storage
of
sustainable
energy
technologies.
Inspired
by
biomineralization
process,
we
utilized
phosphorylation
sites
collagen
molecules
to
combine
with
cobalt‐based
mononuclear
precursors
at
molecular
level
built
a
three‐dimensional
(3D)
porous
hierarchical
material
through
bottom‐up
biomimetic
self‐assembly
strategy
obtain
single‐atom
catalysts
confined
on
carbonized
self‐assembled
carriers
(Co
SACs/cBSC)
after
subsequent
high‐temperature
annealing.
In
this
strategy,
biomolecule
improved
anchoring
efficiency
metal
precursor
precise
functional
groups;
meanwhile,
binding‐then‐assembling
also
effectively
suppressed
nonspecific
adsorption
ions,
ultimately
preventing
atomic
agglomeration
achieving
strong
electronic
metal‐support
interactions
(EMSIs).
Experimental
characterizations
confirm
that
binding
forms
between
cobalt
substrate
(Co–O
4
–P).
Theoretical
calculations
disclose
local
environment
changes
significantly
tailored
Co
d‐band
center,
optimized
oxygenated
intermediates
barrier
release.
As
result,
obtained
SACs/cBSC
catalyst
can
achieve
remarkable
OER
activity
24
h
durability
in
1
M
KOH
(
η
10
288
mV;
Tafel
slope
44
mV
dec
−1
),
better
than
other
transition
metal‐based
commercial
IrO
2
.
Overall,
presented
prepare
SACs
EMSIs,
providing
new
avenue
preparation
efficient
fine
structures.
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
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 6, 2025
The
development
of
efficient
and
stable
electrocatalysts
for
the
hydrogen
evolution
reaction
(HER)
is
essential
realization
effective
production
via
seawater
electrolysis.
Herein,
study
has
developed
a
simple
method
that
combines
electrospinning
with
subsequent
thermal
shock
technology
to
effectively
disperse
ruthenium
nanoparticles
onto
highly
conductive
titanium
carbide
nanofibers
(Ru@TiC).
electronic
metal-support
interactions
(EMSI)
resulted
from
charge
redistribution
at
interface
between
Ru
TiC
support
can
optimize
desorption
kinetics
sites
induce
spillover
phenomenon,
thereby
improving
evolution.
As
result,
Ru@TiC
catalyst
exhibits
outstanding
HER
activity,
requiring
low
overpotentials
only
65
mV
in
alkaline
current
density
100
mA
cm-2.
Meanwhile,
demonstrates
excellent
stability,
maintaining
consistent
operation
500
cm-2
least
250
hours.
Additionally,
an
anion
exchange
membrane
electrolyzer
incorporating
operated
continuously
over
hours
200
seawater.
This
highlights
significant
potential
robust
supports
fabrication
enduring
enhance
complex
environments.
Advanced Sustainable Systems,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 15, 2024
Abstract
The
ingenious
modification
of
the
hydrogen
adsorption
state
ruthenium
(Ru)
for
achieving
high‐efficiency
electrocatalytic
performance
is
vital
importance
water
electrolysis
technology.
Herein,
a
novel
heterostructured
catalyst
composed
highly
dispersed
ultrafine
Ru
nanoparticles
immobilized
on
CoP
nanosheet
(denoted
as
Ru/CoP
hereafter)
developed
through
feasible
“impregnation‐phosphorization”
strategy.
Experimental
results
and
density
functional
theory
(DFT)
simulations
collectively
indicate
that
strong
metal‐support
interaction
(SMSI)
effect
between
substrate
can
dramatically
tailor
electronic
configurations
active
centers,
thus
accelerating
charge
transfer
rate
regulating
binding
energy.
Consequently,
electrocatalyst
with
optimal
loading
content
demonstrates
prominent
HER
in
alkaline
solution
low
overpotential
36
mV
to
afford
current
10
mA
cm
−2
small
Tafel
slope
73.0
dec
−1
,
which
almost
compete
commercial
Pt/C.
This
work
provides
new
inspiration
elaborate
intermediate
capacity
enhancement
electrocatalysts
energy
conversion
fields.
