Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(8), P. 5324 - 5332
Published: Feb. 14, 2024
The
low
coverage
rate
of
anode
OH
adsorption
under
high
current
density
conditions
has
become
an
important
factor
restricting
the
development
industrial
alkaline
water
electrolyzer
(AWE).
Here,
we
present
our
rare
earth
modification
promotion
strategy
on
using
oxygen-friendly
interface
to
increase
NiS2
surface
for
efficient
AWE
catalysis.
Density
functional
theory
calculations
predict
that
earths
can
enhance
OH,
and
synthesis
reaction
mechanism
is
discussed
in
process
spectrum.
Experimentally,
by
preparing
a
series
rare-earth-modified
NiS2,
relationship
between
coverage,
active
site
density,
catalytic
activity
was
established
attenuated
total
reflection
Fourier
transform
infrared
(ATR-FTIR)
spectroscopy,
time-resolved
absorption
spectra,
so
on.
unique
oxygenophilic
properties
thereby
increasing
sites
Furthermore,
Eu2O3/NiS2
assembled
into
equipment
operated
stably
over
240
h
at
300
mA
cm–2
80
°C
30%
KOH.
Rare-earth-modified
exhibits
better
than
traditional
non-noble
metal
catalysts
Ni(OH)2
providing
new
approach
solve
problem
anode.
Proceedings of the National Academy of Sciences,
Journal Year:
2024,
Volume and Issue:
121(30)
Published: July 16, 2024
High-entropy
compounds
have
been
emerging
as
promising
candidates
for
electrolysis,
yet
their
controllable
electrosynthesis
strategy
remains
a
formidable
challenge
because
of
the
ambiguous
ionic
interaction
and
codeposition
mechanism.
Herein,
we
report
oxygenates
directionally
induced
electrodeposition
to
construct
high-entropy
materials
with
amorphous
features,
on
which
structural
evolution
from
phosphide
oxide
is
confirmed
by
introducing
vanadate,
thus
realizing
simultaneous
optimization
composition
structure.
The
representative
P-CoNiMnWVO
x
shows
excellent
bifunctional
catalytic
performance
toward
alkaline
hydrogen
reaction
ethanol
oxidation
(EOR),
small
potentials
−168
mV
1.38
V
at
100
mA
cm
−2
,
respectively.
In
situ
spectroscopy
illustrates
that
electrochemical
reconstruction
induces
abundant
Co–O
species
main
active
EOR
follows
conversion
pathway
C
2
product.
Theoretical
calculations
reveal
optimized
electronic
structure
adsorption
free
energy
intermediates
thereby
resulting
in
facilitated
kinetic
process.
A
membrane-free
electrolyzer
delivers
both
high
Faradaic
efficiencies
acetate
H
over
95%
superior
stability
at100
during
120
h
electrolysis.
addition,
unique
advantages
endow
multifunctional
activity
realize
multipathway
formate-coupled
production.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 10, 2024
Abstract
Electrocatalytic
water
splitting
driven
by
sustainable
energy
is
a
clean
and
promising
water‐chemical
fuel
conversion
technology
for
the
production
of
high‐purity
green
hydrogen.
However,
sluggish
kinetics
anodic
oxygen
evolution
reaction
(OER)
pose
challenges
large‐scale
hydrogen
production,
limiting
its
efficiency
safety.
Recently,
OER
has
been
replaced
nucleophilic
oxidation
(NOR)
with
biomass
as
substrate
coupled
(HER),
which
attracted
great
interest.
Anode
NOR
offers
faster
kinetics,
generates
high‐value
products,
reduces
consumption.
By
coupling
reaction,
can
be
enhanced
while
yielding
products
or
degrading
pollutants.
Therefore,
NOR‐coupled
HER
another
new
electrolytic
strategy
after
significance
realizing
development
global
decarbonization.
This
review
explores
potential
reactions
an
alternative
to
delves
into
mechanisms,
guiding
future
research
in
production.
It
assesses
different
methods,
analyzing
pathways
catalyst
effects.
Furthermore,
it
evaluates
role
electrolyzers
industrialized
discusses
prospects
challenges.
comprehensive
aims
advance
efficient
economical
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(26)
Published: April 8, 2024
Abstract
Metal‐organic
frameworks
(MOFs)
have
emerged
as
promising
platforms
for
photocatalytic
hydrogen
evolution
reaction
(HER)
due
to
their
fascinating
physiochemical
properties.
Rationally
engineering
the
compositions
and
structures
of
MOFs
can
provide
abundant
opportunities
optimization.
In
recent
years,
high‐entropy
materials
(HEMs)
demonstrated
great
potential
in
energy
environment
fields.
However,
there
is
still
no
report
on
development
(HE‐MOFs)
HER
aqueous
solution.
Herein,
authors
synthesis
a
novel
p
‐type
HE‐MOFs
single
crystal
(HE‐MOF‐SC)
corresponding
nanosheets
(HE‐MOF‐NS)
capable
realizing
visible‐light‐driven
HER.
Both
HE‐MOF‐SC
HE‐MOF‐NS
exhibit
higher
activity
than
all
single‐metal
MOFs,
which
are
supposed
be
ascribed
interplay
between
different
metal
nodes
that
enables
more
efficient
charge
transfer.
Moreover,
impressively,
demonstrates
much
its
thin
thickness
enhanced
surface
area.
At
optimum
conditions,
rate
H
2
≈13.24
mmol
h
−1
g
,
among
highest
values
reported
water‐stable
MOF
photocatalysts.
This
work
highlights
importance
developing
advanced
toward
photocatalysis.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(37)
Published: May 6, 2024
Abstract
The
exploitation
of
highly
activity
oxygen
evolution
reaction
(OER)
electrocatalysts
is
critical
for
the
application
electrocatalytic
water
splitting.
Triggering
lattice
mechanism
(LOM)
expected
to
provide
a
promising
pathway
overcome
sluggish
OER
kinetics,
however,
effectively
enhancing
involvement
remains
challenging.
In
this
study,
fabrication
B,
Fe
co‐doped
CoP
(B,
Fe─CoP)
nanofibers
reported,
which
serve
as
efficient
electrocatalyst
through
phosphorization
and
boronation
treatment
Fe‐doped
Co
3
O
4
nanofibers.
Experimental
results
combined
with
theoretical
calculations
reveal
that
simultaneous
incorporation
both
B
can
more
trigger
participation
in
CoFe
oxyhydroxides
reconstructed
from
Fe─CoP
compared
incorporating
only
or
Fe.
Therefore,
optimized
exhibit
superb
low
overpotentials
361
376
mV
at
1000
mA
cm
−2
alkaline
freshwater
natural
seawater,
respectively.
present
work
provides
significant
guidelines
innovative
design
concepts
development
following
LOM
pathway.
Small,
Journal Year:
2024,
Volume and Issue:
20(29)
Published: Feb. 23, 2024
The
global
pursuit
of
sustainable
energy
is
focused
on
producing
hydrogen
through
electrocatalysis
driven
by
renewable
energy.
Recently,
High
entropy
alloys
(HEAs)
have
taken
the
spotlight
in
electrolysis
due
to
their
intriguing
cocktail
effect,
broad
design
space,
customizable
electronic
structure,
and
stabilization
effect.
tunability
complexity
HEAs
allow
a
diverse
range
active
sites,
optimizing
adsorption
strength
activity
for
electrochemical
water
splitting.
This
review
comprehensively
covers
contemporary
advancements
synthesis
technique,
framework,
physio-chemical
evaluation
approaches
HEA-based
electrocatalysts.
Additionally,
it
explores
principles
strategies
aimed
at
catalytic
activity,
stability,
effectiveness
evolution
reaction
(HER),
oxygen
(OER),
overall
Through
an
in-depth
investigation
these
aspects,
inherent
constituent
element
interactions,
processes,
sites
associated
with
unravel.
Eventually,
outlook
regarding
challenges
impending
difficulties
outline
future
direction
HEA
provided.
thorough
knowledge
offered
this
will
assist
formulating
designing
catalysts
based
next
generation
electrochemistry-related
applications.
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(12), P. 3960 - 4009
Published: Jan. 1, 2024
The
general
principles
in
terms
of
reactivity
and
stability
to
design
efficient
electrocatalysts
for
the
alkaline
hydrogen
oxidation
reaction
are
reviewed.
performance
catalysts
anion-exchange
membrane
fuel
cells
is
further
discussed.
