Metal‐Organic Framework‐Based Electrocatalysts for Acidic Water Splitting
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(34)
Опубликована: Март 13, 2024
Abstract
The
proton
exchange
membrane
water
electrolysis
system
has
long
been
considered
a
promising
technique
for
the
generation
of
hydrogen
owing
to
its
high
electrolytic
efficiency,
reliability,
and
quick
response
renewable
energy
sources.
At
present,
noble
metals
their
oxides
(e.g.,
Pt,
IrO
2
,
RuO
)
are
widely
used
as
active
electrocatalysts
accelerating
conversion
efficiency
process,
especially
in
acidic
media.
Nevertheless,
scarcity
instability
seriously
impede
large‐scale
application
practice.
In
past
years,
metal‐organic
frameworks
(MOFs)
have
proven
be
an
ideal
platform
designing
efficient
cost‐effective
electrodes
due
unique
physicochemical
properties.
this
review,
fundamental
catalytic
mechanisms
evolution
reaction
(HER)
oxygen
(OER)
media
discussed
first.
Then,
design
strategies
advanced
characterizations
MOF‐based
water‐splitting
catalysts
summarized.
Finally,
recent
research
advances
HER
OER
electrolytes,
along
with
current
challenges
future
opportunities,
provided.
Язык: Английский
Rationally Designed Mo/Ru‐Based Multi‐Site Heterogeneous Electrocatalyst for Accelerated Alkaline Hydrogen Evolution Reaction
Advanced Materials,
Год журнала:
2024,
Номер
36(48)
Опубликована: Окт. 6, 2024
The
rational
design
of
multi-site
electrocatalysts
with
three
different
functions
for
facile
H
Язык: Английский
Constructing Favorable Microenvironment on Copper Grain Boundaries for CO2 Electro-conversion to Multicarbon Products
Nano Letters,
Год журнала:
2024,
Номер
24(30), С. 9345 - 9352
Опубликована: Июль 16, 2024
The
electrochemical
CO2
reduction
reaction
(eCO2RR)
to
multicarbon
chemicals
provides
a
promising
avenue
for
storing
renewable
energy.
Herein,
we
synthesized
small
Cu
nanoparticles
featuring
enriched
tiny
grain
boundaries
(RGBs-Cu)
through
spatial
confinement
and
in
situ
electroreduction.
In-situ
spectroscopy
theoretical
calculations
demonstrate
that
small-sized
significantly
enhance
the
adsorption
of
*CO
intermediate,
owing
presence
abundant
low-coordinated
disordered
atoms.
Furthermore,
these
boundaries,
generated
under
high
current
conditions,
exhibit
excellent
stability
during
eCO2RR
process,
thereby
creating
stable
*CO-rich
microenvironment.
This
local
concentration
around
catalyst
surface
can
reduce
energy
barrier
C–C
coupling
increase
Faradaic
efficiency
(FE)
products
across
both
neutral
alkaline
electrolytes.
Specifically,
developed
RGBs-Cu
electrocatalyst
achieved
peak
FE
77.3%
maintained
more
than
134
h
at
constant
density
−500
mA
cm–2.
Язык: Английский
Promoting Efficient Ruthenium Sites With Lewis Acid Oxide for the Accelerated Hydrogen and Chlor‐Alkali Co‐Production
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 21, 2025
Abstract
Ruthenium
(Ru)
–based
catalysts
have
been
considered
a
promising
candidate
for
efficient
sustainable
hydrogen
and
chlor‐alkali
co‐production.
Theoretical
calculations
disclosed
that
the
hollow
sites
on
Ru
surface
strong
adsorption
energies
of
H
Cl
species,
which
inevitably
leads
to
poor
activity
cathodic
evolution
reaction
(HER)
anodic
chlorine
(CER),
respectively.
Furthermore,
it
confirmed
anchoring
Lewis
acid
oxide
nanoparticles
such
as
MgO
can
induce
formation
onion‐like
charge
distribution
atoms
around
nanoparticles,
thereby
exposing
Ru‐bridge
at
interface
excellent
accelerate
both
HER
CER.
Under
guidance
theoretical
calculations,
novel
dispersed
(MgO
x
‐Ru)
electrocatalyst
is
successfully
prepared.
In
strongly
alkaline
saline
media,
‐Ru
recorded
CER
electrocatalytic
with
very
low
overpotential
19
mV
74
current
density
10
mA
cm
−2
,
More
stirringly,
electrochemical
test
electrodes
under
simulated
electrolysis
conditions
demonstrated
superior
performance
industrial
commercial
20
wt%
Pt/C
dimensionally
stable
anode
(DSA).
Язык: Английский
Femtosecond laser synthesis of metastable PtRu/graphene electrocatalysts for efficient hydrogen evolution reaction in acidic and alkaline solutions
Journal of Colloid and Interface Science,
Год журнала:
2025,
Номер
690, С. 137265 - 137265
Опубликована: Март 8, 2025
Язык: Английский
Enhanced Tri‐Atom Ru‐Based Catalyst for Hydrogen Evolution Reaction via Rapid Pyrolysis of Precursor
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 27, 2025
Abstract
Atomically
precise
supported
nanocluster
catalysts
(APSNCs),
with
well‐defined
metal
active
sites,
unique
geometrical
and
electronic
structures
metal–metal
bonds,
demonstrate
excellent
catalytic
performance.
However,
the
synthesis
of
APSNCs
centers
stable
remains
a
huge
challenge
due
to
uncontrollable
aggregation
during
reactions.
Herein,
Ru
3
uniformly
dispersed
on
oxidized
carbon
nanotubes
(Ru
/OCNT)
is
successfully
synthesized
by
using
rapid
pyrolysis
precursor
strategy.
The
obtained
/OCNT
exhibits
performance
for
alkaline
hydrogen
evolution
reaction
(HER).
catalyst
achieves
an
overpotential
19
mV
at
current
density
10
mA
cm
−2
in
1
m
KOH
solution,
outperforming
commercial
20
wt.%
Pt/C
5
Ru/C.
Moreover,
mass
activity
23.47
11.83
times
higher
than
that
Density
functional
theory
(DFT)
calculations
reveal
interaction
metal–support
effectively
modulate
structure
atoms,
lower
adsorption
energy
site,
promote
H*
desorption.
This
work
offers
new
perspective
design
Язык: Английский
Lattice‐Matched Ru/W2C Heterointerfaces with Reversible Hydrogen Spillover for Efficient Alkaline Hydrogen Evolution
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 24, 2024
Abstract
The
effect
of
lattice‐matched
heterointerfaces
on
the
hydrogen
reverse
spillover
process
for
accelerating
alkaline
evolution
reaction
(HER)
kinetics
has
not
yet
been
reported.
Herein,
a
Ru/W
2
C
heterostructure
is
successfully
constructed
effective
production.
Experimental
and
theoretical
results
reveal
that
Ru
nanocluster
can
effectively
stabilize
W
thus
promote
formation
phase‐pure
in
heterostructure.
In
addition,
it
revealed
H
O
dissociation
proceeded
C,
formed
intermediates
are
subsequently
migrated
to
adjacent
interfacial
sites
H─H
coupling
release.
This
enabled
via
reversible
mechanism
promoted
by
weaken
proton
adsorption.
As
expected,
heterogeneous
electrocatalyst
exhibited
superior
HER
performance
with
low
overpotential
17
mV
at
10
mA
cm
−2
,
high
mass
current
density
(6.44
A
mg
−1
),
turnover
frequency
(TOF)
value
(2.8
s
)
100
mV,
far
overwhelming
benchmark
Ru/C
Pt/C.
study
may
offer
new
perspective
design
highly
active
electrocatalysts
HER.
Язык: Английский