Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(7), P. 3694 - 3812
Published: March 22, 2024
Electrocatalytic
water
splitting
driven
by
renewable
electricity
has
been
recognized
as
a
promising
approach
for
green
hydrogen
production.
Different
from
conventional
strategies
in
developing
electrocatalysts
the
two
half-reactions
of
(e.g.,
and
oxygen
evolution
reactions,
HER
OER)
separately,
there
growing
interest
designing
bifunctional
electrocatalysts,
which
are
able
to
catalyze
both
OER.
In
addition,
considering
high
overpotentials
required
OER
while
limited
value
produced
oxygen,
is
another
rapidly
exploring
alternative
oxidation
reactions
replace
hybrid
toward
energy-efficient
generation.
This
Review
begins
with
an
introduction
on
fundamental
aspects
splitting,
followed
thorough
discussion
various
physicochemical
characterization
techniques
that
frequently
employed
probing
active
sites,
emphasis
reconstruction
during
redox
electrolysis.
The
design,
synthesis,
performance
diverse
based
noble
metals,
nonprecious
metal-free
nanocarbons,
overall
acidic
alkaline
electrolytes,
thoroughly
summarized
compared.
Next,
their
application
also
presented,
wherein
anodic
include
sacrificing
agents
oxidation,
pollutants
oxidative
degradation,
organics
upgrading.
Finally,
concise
statement
current
challenges
future
opportunities
presented
hope
guiding
endeavors
quest
sustainable
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(7)
Published: Oct. 30, 2023
Abstract
Owing
to
the
Pt‐like
electrocatalytic
capability
and
moderate
price,
Ru‐based
catalysts
are
considered
as
Pt
alternatives
for
electrochemical
water
splitting.
However,
they
demonstrate
limited
catalytic
performance
under
industrial‐level
current
densities.
Herein,
a
novel
electrocatalyst
with
an
extremely
low
amount
(0.85
wt.%)
of
Ru
nanoclusters
anchored
on
Cr‐doped
Fe‐metal–organic
frameworks
(Ru@Cr─FeMOF)
through
robust
Cr─O─Ru
bond
is
presented.
The
study
unveils
that
such
architecture
facilitates
fast
electron
transfer
manipulates
highest
occupied
d
orbital
d‐band
centers
sites,
favoring
both
oxygen
evolution
reaction
(OER)
hydrogen
(HER)
catalysis.
as‐prepared
catalyst
performs
excellent
activity
21
mV@10
mA
cm
−2
HER
230
mV@50
OER
in
alkaline
solution,
realizes
water‐splitting
at
densities
(1.72
V@1000
),
surpassing
state‐of‐the‐art
literatures.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(34)
Published: March 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.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(14)
Published: Jan. 21, 2024
Abstract
This
work
reports
the
use
of
metal‐support
interaction
strengthening
through
defect
engineering
and
single
atom
adsorption
to
supports
increase
catalytic
activities
metals.
Specifically,
plasma
treated
TiO
2
nanowires
with
Ir
nanoparticle
growth
Sr
(the
Ir@Sr‐p‐TiO
NWs)
are
synthesized
demonstrated
be
efficient
catalysts
for
OER
HER.
They
only
need
overpotentials
250
32
mV
drive
10
mA
cm
−2
HER,
respectively.
Their
HER
much
higher
than
commercial
IrO
Pt/C.
The
high
NWs
mainly
arise
from
strengthened
interactions
between
nanoparticles
p‐TiO
NWs,
achieved
by
generated
oxygen
defects
(Vo·)
on
NWs.
Analysis
DFT
calculations
indicate
that
Vo·
can
promote
charge
transfer
nanoparticles,
optimizing
adsorptions
intermediates
O‐
H‐covered
nanoparticles.
Additionally,
strong
stabilities
NPs
against
chemical
corrosions,
increasing
durabilities
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(22)
Published: Feb. 4, 2024
Abstract
Seawater
electrolysis
is
a
sustainable
technology
for
producing
hydrogen
that
would
neither
cause
global
freshwater
shortages
nor
create
carbon
emissions.
However,
this
severely
hampered
by
the
insufficient
stability
and
competition
from
chlorine
evolution
reaction
(ClER)
in
actual
application.
Herein,
metal–organic
framework
(MOF)‐on‐MOF
heterojunction
(Ni‐BDC/NH
2
‐MIL‐88B(Fe))
denoted
as
(Ni‐BDC/NM88B(Fe))
synthesized
an
effective
oxygen
(OER)
electrocatalyst
high‐performance
seawater
electrolysis,
which
exhibits
long
of
200
h
low
overpotentials
232
299
mV
at
100
mA
cm
−2
alkaline
solution,
respectively.
The
exceptional
performance
attributed
to
rapid
self‐reconstruction
Ni‐BDC/NM88B(Fe)
produce
NiFeOOH
protective
layer,
thereby
avoiding
ClER‐induced
dissolution.
Moreover,
interface
interaction
between
Ni‐BDC
NM88B(Fe)
could
form
Ni─O─Fe
bonds
promote
electron
transfer
lower
energy
barrier
rate‐determining
step,
accelerating
OER.
These
electrochemical
properties
make
it
intriguing
candidate
efficient
practical
electrolysis.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(28)
Published: April 26, 2024
Abstract
Creating
specific
noble
metal/metal‐organic
framework
(MOF)
heterojunction
nanostructures
represents
an
effective
strategy
to
promote
water
electrolysis
but
remains
rather
challenging.
Herein,
a
electrocatalyst
is
developed
by
growing
Ir
nanoparticles
on
ultrathin
NiFe‐MOF
nanosheets
supported
nickel
foam
(NF)
via
readily
accessible
solvothermal
approach
and
subsequent
redox
strategy.
Because
of
the
electronic
interactions
between
nanosheets,
optimized
Ir@NiFe‐MOF/NF
catalyst
exhibits
exceptional
bifunctional
performance
for
hydrogen
evolution
reaction
(HER)
(
η
10
=
15
mV,
denotes
overpotential)
oxygen
(OER)
213
mV)
in
1.0
m
KOH
solution,
superior
commercial
recently
reported
electrocatalysts.
Density
functional
theory
calculations
are
used
further
investigate
shedding
light
mechanisms
behind
enhanced
HER
OER
performance.
This
work
details
promising
design
development
efficient
electrocatalysts
overall
splitting.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(30), P. 11890 - 11901
Published: Jan. 1, 2024
Ir
nanoparticles
on
Co
6
Mo
C
nanofibers
bridging
with
a
carbon
layer
have
been
fabricated
as
efficient
bifunctional
electrocatalysts
for
water
splitting,
presenting
ultrahigh
electrocatalytic
performance
at
ampere-level
current
density.
