Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(45)
Published: Oct. 28, 2024
Abstract
High‐current‐density
water
electrolysis
is
considered
a
promising
technology
for
industrial‐scale
green
hydrogen
production,
which
of
significant
value
to
energy
decarbonization
and
numerous
sustainable
industrial
applications.
To
date,
substantial
research
advancements
are
achieved
in
catalyst
design
laboratory‐based
electrolysis.
While
the
designed
catalysts
demonstrate
remarkable
performance
at
low
current
densities,
they
suffer
from
marked
deteriorations
both
activity
long‐term
stability
under
industrial‐level
high‐current‐density
operations.
provide
timely
assessment
that
helps
bridge
gap
between
laboratory‐scale
fundamental
practical
technology,
here
various
commercial
electrolyzers
first
systematically
analyzed,
then
key
parameters
including
work
temperature,
density,
lifetime
stacks,
cell
efficiency,
capital
cost
stacks
critically
evaluated.
In
addition,
impact
high
density
on
electrocatalytic
behavior
catalysts,
intrinsic
activity,
stability,
mass
transfer,
discussed
advance
design.
Therefore,
by
covering
range
critical
issues
material
principles
parameters,
future
directions
development
highly
efficient
low‐cost
presented
procedure
screening
laboratory‐designed
outlined.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(17)
Published: March 2, 2023
The
construction
of
high-activity
and
low-cost
electrocatalysts
is
critical
for
efficient
hydrogen
production
by
water
electrolysis.
Herein,
we
developed
an
advanced
electrocatalyst
anchoring
well-dispersed
Ir
nanoparticles
on
nickel
metal-organic
framework
(MOF)
Ni-NDC
(NDC:
2,6-naphthalenedicarboxylic)
nanosheets.
Benefiting
from
the
strong
synergy
between
MOF
through
interfacial
Ni-O-Ir
bonds,
synthesized
Ir@Ni-NDC
showed
exceptional
electrocatalytic
performance
evolution
reaction
(HER),
oxygen
(OER)
overall
splitting
in
a
wide
pH
range,
superior
to
commercial
benchmarks
most
reported
electrocatalysts.
Theoretical
calculations
revealed
that
charge
redistribution
bridge
induced
optimization
H2
O,
OH*
H*
adsorption,
thus
leading
accelerated
electrochemical
kinetics
HER
OER.
This
work
provides
new
clue
exploit
bifunctional
pH-universal
splitting.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(21)
Published: Feb. 2, 2024
Abstract
Metal–support
interaction
(MSI)
is
witnessed
as
an
essential
manner
to
stabilize
active
metals
and
tune
catalytic
activity
for
heterogonous
water
splitting.
Kinetically
driving
the
electrolysis
(WE)
appeals
a
rational
MSI
system
with
coupled
electron‐donating/accepting
(e‐D/A)
characters
hydrogen/oxygen
evolution
reactions
(HER/OER).
However,
metal
stabilization
effect
by
will
in
turn
restrict
deblocking
of
e‐D/A
properties
challenge
full
electrocatalytic
optimization.
This
study
profiles
heterostructure
featuring
metastable
Ru
clusters
on
defective
NiFe
hydroxide
(Ru/d‐NiFe
LDH)
support
low‐precious
(≈2
wt%)
platform
efficient
WE.
It
indicated
that
interfacial
oxygen
vacancies
can
deviate
stable
4d
5
orbit
2+δ
state,
regulate
d‐band
center
levels
toward
facilitated
HER/OER
processes.
Resultantly,
Ru/d‐NiFe
LDH
attains
ultralow
overpotentials
at
10
mA
cm
−2
Pt‐beyond
alkaline
HER
(18
mV)
OER
(220
fast
kinetics
durability.
The
symmetrical
electrolyzer
delivers
promising
voltage
1.49
V
1
m
KOH
seawater
splitting
performance.
work
carries
interesting
opportunities
rationalizing
sophisticated
metal‐support
electrocatalysts
through
metal‐site
metastabilization
engineering.
Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: Sept. 28, 2023
The
hydrogen
evolution
reaction
performance
of
semiconducting
2H-phase
molybdenum
disulfide
(2H-MoS2)
presents
a
significant
hurdle
in
realizing
its
full
potential
applications.
Here,
we
utilize
theoretical
calculations
to
predict
possible
functionalized
graphene
quantum
dots
(GQDs),
which
can
enhance
HER
activity
bulk
MoS2.
Subsequently,
design
GQD-induced
in-situ
bottom-up
strategy
fabricate
near
atom-layer
2H-MoS2
nanosheets
mediated
with
GQDs
(ALQD)
by
modulating
the
concentration
electron
withdrawing/donating
functional
groups.
Experimental
results
reveal
that
introduction
series
during
synthesis
ALQD
plays
crucial
role.
Notably,
higher
and
strength
electron-withdrawing
groups
on
GQDs,
thinner
more
active
resulting
are.
Remarkably,
synthesized
ALQD-SO3
demonstrate
significantly
improved
performance.
Our
provides
simple
efficient
approach
for
expanding
catalytic
application
Furthermore,
it
holds
substantial
developing
other
transition-metal
dichalcogenide
materials.
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(15), P. 10394 - 10404
Published: July 25, 2023
Electrochemical
reformation
of
nitrate
wastewater
and
poly(ethylene
terephthalate)
(PET)
plastic
waste
into
ammonia
(NH3)
fine
chemicals
is
a
sustainable
strategy
for
resource
utilization.
Herein,
co-production
system
glycolic
acid
(GA,
degradable
polymer
monomer)
constructed
by
coupling
reduction
ethylene
glycol
(EG,
in
PET
hydrolysate)
oxidation.
Low-crystalline
CoOOH
(LC-CoOOH/CF)
Pd
nanothorns
(Pd
NTs/NF)
grown
situ
on
the
metal
foam
substrates
are
employed
as
cathode
anode,
respectively.
The
high
density
amorphous
regions
LC-CoOOH/CF
enables
enhanced
adsorption
provides
abundant
active
sites,
ultimately
leading
to
an
Faradic
efficiency
(FE)
97.38
±
1.0%
at
−0.25
V
vs
reversible
hydrogen
electrode
(RHE).
Meanwhile,
unique
nanothorn
morphology
endows
NTs/NF
with
high-curvature
tip,
triggering
tip
effect
(TE)
promote
highly
selective
oxidation
EG
GA.
Furthermore,
two-electrode
system,
NH3
GA
operated
low
energy
consumption
(onset
voltage:
0.5
V),
much
lower
than
traditional
electrolysis
process
(1.4
V).
This
study
method
utilization
co-produce
value-added
chemicals.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
18(1), P. 1214 - 1225
Published: Dec. 27, 2023
By
substituting
the
oxygen
evolution
reaction
(OER)
with
anodic
urea
oxidation
(UOR),
it
not
only
reduces
energy
consumption
for
green
hydrogen
generation
but
also
allows
purification
of
urea-rich
wastewater.
Spin
engineering
d
orbital
and
oxygen-containing
adsorbates
has
been
recognized
as
an
effective
pathway
enhancing
performance
electrocatalysts.
In
this
work,
we
report
fabrication
a
bifunctional
electrocatalyst
composed
amorphous
RuO2-coated
NiO
ultrathin
nanosheets
(a-RuO2/NiO)
abundant
amorphous/crystalline
interfaces
(HER)
UOR.
Impressively,
1.372
V
voltage
is
required
to
attain
current
density
10
mA
cm–2
over
electrolyzer.
The
increased
vacancies
in
a-RuO2/NiO
by
incorporation
RuO2
enhance
total
magnetization
entail
numerous
spin-polarized
electrons
during
reaction,
which
speeds
up
UOR
kinetics.
functional
theory
study
reveals
that
promote
charge-carrier
transfer,
tailored
d-band
center
endows
optimized
adsorption
oxygen-generated
intermediates.
This
kind
vacancy
induced
toward
boosting
HER
kinetics
provides
reliable
reference
exploration
advanced
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(17), P. 17254 - 17264
Published: Aug. 31, 2023
The
emerging
lattice-oxygen
oxidation
mechanism
(LOM)
presents
attractive
opportunities
for
breaking
the
scaling
relationship
to
boost
oxygen
evolution
reaction
(OER)
with
direct
OLattice-*O
interaction.
However,
currently
LOM-triggering
rationales
are
still
debated,
and
a
streamlined
physicochemical
paradigm
is
extremely
desirable
design
of
LOM-defined
OER
catalysts.
Herein,
Ni
metal-organic
framework/black
phosphorene
(NiMOF/BP)
heterostructure
theoretically
profiled
constructed
as
catalytic
platform
LOM-derived
studies.
It
found
that
p-type
BP
host
can
enlarge
Ni-O
bond
polarizability
NiMOF
through
stretching
valence
declining
synergically.
Such
an
enlarged
will
in
principle
alleviate
lattice
confinement
benefit
LOM
pathway
performance.
As
result,
optimized
NiMOF/BP
catalyst
exhibits
promising
performance
low
overpotential
260
mV
at
10
mA
cm-2
long-term
stability
1
M
KOH
electrolyte.
Both
experiment
calculation
results
suggest
activated
more
balanced
step
barrier
catalyst.
This
research
puts
forward
criterion
LOM-scaled
electrocatalysts
water
oxidation.
Small Science,
Journal Year:
2023,
Volume and Issue:
3(9)
Published: Aug. 2, 2023
Developing
energy
production,
storage,
and
conversion
technologies
based
on
sustainable
or
renewable
is
essential
to
address
the
environmental
crisis.
Electrochemical
water
splitting
one
of
most
promising
approaches
realize
production
green
hydrogen.
The
design
catalytic
materials
with
low
cost,
high
activity,
long‐term
stability
exploration
specific
reaction
mechanisms
are
key
focus
for
involved
electrochemical
hydrogen
evolution
(HER).
Recently,
substantial
efforts
have
been
devoted
rational
synthesis
non‐noble
metallic
heterostructures
fascinating
synergistic
effects
among
different
components.
These
heterostructured
demonstrate
comprehensive
properties
exceeding
estimations
by
rule
mixtures
display
activity
in
industrial
conditions
HER.
Herein,
mechanism
parameters
improving
performance
HER
process
discussed
detail.
latest
advances
synthetic
methods
electrocatalytic
characteristics
from
experimental
computational
perspectives
summarized
according
role
various
insights
provided
this
review
into
an
in‐depth
understanding
as
electrocatalysts,
opportunities
challenges
scale
up
future‐oriented
developments
highlighted.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
63(7)
Published: Dec. 28, 2023
Abstract
Modulating
the
microenvironment
of
single‐atom
catalysts
(SACs)
is
critical
to
optimizing
catalytic
activity.
Herein,
we
innovatively
propose
a
strategy
improve
local
reaction
environment
Ru
single
atoms
by
precisely
switching
crystallinity
support
from
high
crystalline
and
low
crystalline,
which
significantly
improves
hydrogen
evolution
(HER)
The
catalyst
anchored
on
low‐crystalline
nickel
hydroxide
(Ru−LC−Ni(OH)
2
)
reconstructs
distribution
balance
interfacial
ions
due
activation
effect
metal
dangling
bonds
support.
Single‐site
with
oxidation
state
induces
aggregation
hydronium
(H
3
O
+
),
leading
formation
acidic
in
alkaline
media,
breaking
pH‐dependent
HER
As
comparison,
high‐crystalline
(Ru−HC−Ni(OH)
exhibits
sluggish
Volmer
step
conventional
environment.
expected,
Ru−LC−Ni(OH)
requires
overpotentials
9
136
mV
at
10
1000
mA
cm
−2
conditions
operates
stably
500
for
h
an
seawater
anion
exchange
membrane
(AEM)
electrolyzer.
This
study
provides
new
perspective
constructing
highly
active
electrocatalysts.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(3), P. 1247 - 1287
Published: Jan. 23, 2024
Metallic
materials
are
usually
composed
of
single
phase
or
multiple
phases,
which
refers
to
homogeneous
regions
with
distinct
types
the
atom
arrangement.
The
recent
studies
on
nanostructured
metallic
provide
a
variety
promising
approaches
engineer
phases
at
nanoscale.
Tailoring
size,
distribution,
and
introducing
new
structures
via
transformation
contribute
precise
modification
in
deformation
behaviors
electronic
nanostructural
materials.
Therefore,
engineering
is
expected
pave
an
innovative
way
develop
advanced
mechanical
functional
properties.
In
this
review,
we
present
comprehensive
overview
heterogeneous
nanophases
fundamental
understanding
nanophase
formation
for
materials,
including
supra-nano-dual-phase
nanoprecipitation-
nanotwin-strengthened
We
first
review
thermodynamics
kinetics
principles
structure,
followed
by
discussion
mechanism
structural
as
well
optimization
structure
electrocatalysis.
Then,
demonstrate
origin,
classification,
properties
characteristics
dense
nanoprecipitations
nanotwins.
Finally,
summarize
some
potential
research
challenges
field
short
perspective
scientific
implications
design
next-generation
