Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 3, 2025
The
deployment
of
high-performance
catalysts
and
the
acceleration
anodic
reaction
kinetics
are
key
measures
to
achieve
maximum
energy
efficiency
in
overall
water
electrolysis
hydrogen
production
systems.
Here,
an
innovative
strategy
is
developed
by
directly
constructing
a
supramolecular
framework
embedded
with
boron
clusters
cucurbituril
as
reducing
agent.
This
approach
enabled
situ
conversion
Pt⁴⁺
into
highly
dispersed,
small-sized
nano-platinum,
which
subsequently
distributed
on
boron-carbon-nitrogen
(BCN)
matrix.
resulting
Pt/BNHCSs
catalyst
demonstrates
ability
facilitate
electrocatalytic
splitting
for
across
multiple
scenarios
while
simultaneously
accelerating
methanol
oxidation
kinetics,
significantly
outperforming
commercial
Pt/C
various
aspects.
cathodic
evolution-anodic
coupling
system
constructed
using
greatly
reduces
consumption
system.
In
attenuated
total
reflection
Fourier
transform
infrared
online
differential
electrochemical
mass
spectrometry
reveals
that
interface
enhances
H₂O
adsorption
promotes
CH₃OH→CO
process,
density
functional
theory
calculations
indicated
BCN
support
facilitated
evolution
H₂
CH₃OH
CO,
elucidating
mechanism
promoted
oxidation.
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 7, 2025
Abstract
Overall
water
splitting
(OWS)
to
produce
hydrogen
has
attracted
large
attention
in
recent
years
due
its
ecological‐friendliness
and
sustainability.
However,
the
efficiency
of
OWS
been
forced
by
sluggish
kinetics
four‐electron
oxygen
evolution
reaction
(OER).
The
replacement
OER
alternative
electrooxidation
small
molecules
with
more
thermodynamically
favorable
potentials
may
fundamentally
break
limitation
achieve
production
low
energy
consumption,
which
also
be
accompanied
value‐added
chemicals
than
or
electrochemical
degradation
pollutants.
This
review
critically
assesses
latest
discoveries
coupled
various
OWS,
including
alcohols,
aldehydes,
amides,
urea,
hydrazine,
etc.
Emphasis
is
placed
on
corresponding
electrocatalyst
design
related
mechanisms
(e.g.,
dual
hydrogenation
N–N
bond
breaking
hydrazine
C═N
regulation
urea
inhibit
hazardous
NCO
−
NO
productions,
etc.),
along
emerging
reactions
(electrooxidation
tetrazoles,
furazans,
iodide,
quinolines,
ascorbic
acid,
sterol,
trimethylamine,
etc.).
Some
new
decoupled
electrolysis
self‐powered
systems
are
discussed
detail.
Finally,
potential
challenges
prospects
highlighted
aid
future
research
directions.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(41)
Опубликована: Авг. 17, 2024
Abstract
Ni‐based
electrocatalysts
are
considered
to
be
significantly
promising
candidates
for
electrocatalytic
urea
oxidation
reaction
(UOR).
However,
their
UOR
activity
and
stability
severely
enslaved
by
the
inevitable
Ni
group
self‐oxidation
phenomenon.
In
this
study,
glassy
state
NiFe
LDH
with
uniform
Cu
dopant
(Cu‐NiFe
LDH)
a
simple
sol–gel
strategy
is
successfully
synthesized.
When
served
as
catalyst,
Cu‐NiFe
required
123
mV
lower
potential
at
both
10
100
mA
cm
−2
in
comparison
conventional
anodic
OER.
It
can
also
operate
steadily
more
than
300
h
.
The
in‐depth
investigation
reveals
that
incorporation
optimize
local
electronic
structure
of
species
induce
high‐valent
sites.
sites
would
act
active
center
during
proposed
energetically
favorable
route,
which
directly
reacts
on
without
inducing
formation
NiOOH
species,
resulting
boosted
stability.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 25, 2025
Abstract
To
overcome
the
challenges
of
low
catalytic
activity
and
instability,
a
molecular
weight
engineering
strategy
coupled
with
oxidative
ammonolysis
is
developed
to
synthesize
CoRu‐based
alloy
catalysts
distinct
morphologies
properties
from
biorefinery
lignin.
This
approach
effectively
modulates
intrinsic
active
sites
exposes
unsaturated
nitrogen‐oxygen
structures,
thereby
tailoring
morphology
defect
structure
carbon
layers
in
catalysts.
The
as‐synthesized
CoRu
lignin
precursors
varying
weights
are
designated
as
CoRu@OALC‐EtOAC,
CoRu@OALC‐EtOH,
CoRu@OALC‐Residual.
featuring
defect‐rich
graphitic
carbon‐coated
structure,
exhibited
exceptional
overall
water‐splitting
performance
(1.48
V
at
10
mA
cm
−2
),
significantly
surpassing
Pt/C
||
Ru/C
(1.58
).
In
contrast,
CoRu@OALC‐Residual,
its
amorphous
demonstrated
remarkable
stability
(350
h
100
vastly
outperforming
(6
In‐situ
Raman
spectroscopy
DFT
calculations
revealed
that
adsorb
*
H
intermediates,
accelerating
process.
strong
adsorption
also
induces
layer
rearrangement,
leading
dissolution
oxidation
metal
particles.
provides
universal
method
for
biomass‐derived
catalysts,
establishing
direct
relationship
between
weight,
catalyst
morphology,
electrocatalytic
performance.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 4, 2025
Abstract
Proton
exchange
membrane
water
electrolysis
(PEMWE)
represents
a
promising
technology
for
renewable
hydrogen
production.
However,
the
large‐scale
commercialization
of
PEMWE
faces
challenges
due
to
need
acid
oxygen
evolution
reaction
(OER)
catalysts
with
long‐term
stability
and
corrosion‐resistant
electrode
assemblies
(MEA).
This
review
thoroughly
examines
deactivation
mechanisms
acidic
OER
crucial
factors
affecting
assembly
instability
in
complex
environments,
including
catalyst
degradation,
dynamic
behavior
at
MEA
triple‐phase
boundary,
equipment
failures.
Targeted
solutions
are
proposed,
improvements,
optimized
designs,
operational
strategies.
Finally,
highlights
perspectives
on
strict
activity/stability
evaluation
standards,
situ/operando
characteristics,
practical
electrolyzer
optimization.
These
insights
emphasize
interrelationship
between
catalysts,
MEAs,
activity,
stability,
offering
new
guidance
accelerating
systems.
Catalysts,
Год журнала:
2024,
Номер
14(10), С. 689 - 689
Опубликована: Окт. 3, 2024
Two-dimensional
transition
metal
dichalcogenides
(TMDs),
also
known
as
MX2,
have
attracted
considerable
attention
due
to
their
structure
analogous
graphene
and
unique
properties.
With
superior
electronic
characteristics,
tunable
bandgaps,
an
ultra-thin
two-dimensional
structure,
they
are
positioned
significant
contenders
in
advancing
electrocatalytic
technologies.
This
article
provides
a
comprehensive
review
of
the
research
progress
TMDs
field
water
splitting.
Based
on
fundamental
properties
principles
electrocatalysis,
strategies
enhance
performance
through
layer
control,
doping,
interface
engineering
discussed
detail.
Specifically,
this
delves
into
basic
properties,
reaction
mechanisms,
measures
improve
catalytic
splitting,
including
creation
more
active
sites,
phase
engineering,
construction
heterojunctions.
Research
these
areas
can
provide
deeper
understanding
guidance
for
application
thereby
promoting
development
related
technologies
contributing
solution
energy
environmental
problems.
hold
great
potential
future
needs
further
explore
develop
new
TMD
materials,
optimize
catalysts
achieve
efficient
sustainable
conversion.
Additionally,
it
is
crucial
investigate
stability
durability
during
long-term
reactions
longevity.
Interdisciplinary
cooperation
will
bring
opportunities
research,
integrating
advantages
different
fields
from
practical
application.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 5, 2025
Abstract
The
electrochemical
oxidation
of
amines
has
emerged
as
a
promising
alternative
to
traditional
energy‐intensive
industrial
processes
for
the
green
synthesis
nitriles,
and
rational
design
efficient
electrocatalysts
is
crucial
due
sluggish
reaction
kinetics.
Herein,
it
reported
that
modulating
topological
order
within
same
structural
unit
can
boost
catalytic
activity
electrooxidation
benzylamine
benzonitrile
(BOR).
Using
nickel
nitride
model,
Cu
atoms
are
introduced
into
pristine
N─Ni
framework,
inducing
change
in
units
resulting
formation
Ni
3
CuN
with
an
antiperovskite
structure.
As
result,
exhibits
2‐fold
enhancement
BOR
compared
N,
despite
fact
coordination
polyhedra
both
almost
identical.
Theoretical
calculations
demonstrate
modulation
strategy
successfully
weakens
Ni─N
bonding
interactions,
induces
downward
shift
d‐band
centers,
optimizes
desorption
products,
which
ultimately
contributes
more
superior
electrocatalytic
CuN.
This
work
provides
new
perspective
on
developing
advanced
through
modulation.
