Langmuir,
Journal Year:
2024,
Volume and Issue:
40(42), P. 22230 - 22244
Published: Oct. 11, 2024
A
catalyst
of
the
oxygen
evolution
reaction
(OER)
that
is
viable,
affordable,
and
active
for
effective
water-splitting
applications
critical.
variety
electrocatalysts
have
been
discovered
to
replace
noble
metal-based
catalysts.
Of
these,
transition
sulfides
are
essential
incorporating
carbonaceous
materials
improve
electrical
conductivity,
resulting
in
better
electrocatalytic
performance.
Our
study
illustrates
synthesis
Cu
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(33)
Published: May 21, 2024
Abstract
Developing
highly
effective
transition
metal‐based
bifunctional
electrocatalysts
remains
a
tremendously
challenging
task
for
large‐scale
overall
water
splitting.
Herein,
multiheterostructured
Mo‐doped
Ni
2
P/Fe
x
P
electrocatalyst
on
NiFe
foam
with
vacancy
(denoted
as
Mo─Ni
P‐V/NFF)
is
developed
to
serve
an
efficient
dual‐pH
electrocatalyst.
Due
the
synergistic
effect
of
multiple
strategies
(heteroatom
doping,
heterointerface,
and
vacancy),
P‐V/NFF
possesses
remarkable
hydrogen
evolution
reaction
(HER)
catalytic
activity
in
alkaline/acidic
excellent
oxygen
(OER)
alkaline
media,
along
encouraging
durability.
The
mechanisms
improved
electrocatalytic
combining
multicharacterizations
density
functional
theory
(DFT)
calculations
are
elucidated.
Specifically,
X‐ray
absorption
fine
structure
experimental
analysis
confirms
that
Mo
doping
can
optimize
electronic
In
situ
Raman
spectroscopy
demonstrates
evolved
oxyhydroxides
real
active
substances
OER.
DFT
reveal
conductivity
as‐prepared
samples
be
enhanced
through
strategy
synergy.
Moreover,
HER
process,
not
only
reduce
binding
energy
near
zero
but
also
enhance
H
O
dissociation
*OH
desorption.
OER
verify
interface
engineering
adsorption
rate‐determining
step,
achieving
lowest
theoretical
overpotential.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 10, 2024
Abstract
Transition
metal
chalcogenides
are
an
important
class
of
electrocatalysts
with
broad
application
prospects
in
alkaline
oxygen
evolution
reactions.
Many
researchers
focusing
on
the
situ
conversion
cations
catalysts,
but
have
rarely
considered
contribution
oxidation,
leaching,
and
re‐absorption
to
catalytic
activity.
Herein,
multiple
characterization
approaches
used
monitor
mechanism
origin
CoTe@CoS‐electrocatalyzed
reaction
(OER)
The
research
results
reveal
that
electro‐oxidative
dissolution
Te
S
electrode
surface
forms
TeO
3
2−
SO
,
which
adsorbed
surface.
Moreover,
species
will
further
transform
into
4
.
As
expected,
extra
addition
mixed
tellurite
sulfate
ions
Co
(OH)
2
electrolyte
produces
a
synergistic
effect
can
significantly
boost
OER
Selenites
analogous
effect,
indicating
adsorption
chalcogenates
has
universal
improving
performance.
findings
this
work
provide
unique
insights
materials
enhancing
activity
during
processes.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(20)
Published: April 3, 2024
Abstract
The
electrocatalytic
performance
of
MoNi‐based
nanomaterials
undergo
selenization
has
garnered
significant
interest
due
to
their
modified
electronic
structure,
while
still
posses
certain
challenges
for
obtained
bimetallic
selenides.
Here,
a
novel
electrocatalyst
NiMoO
4
@Mo
15
Se
19
/NiSe
2
core‐shell
is
constructed
promote
the
desorption
OOH
*
which
can
facilitate
water
oxidation
process.
nanoarrays
show
that
“cores”
are
mainly
nanorods
“shells”
selenides
nanoflakes,
super
architectures
expand
more
active
sites
and
accelerate
electron
transfer.
Moreover,
hybridization
interaction
between
Ni
3d,
Mo
4d,
4p
orbitals
leads
an
asymmetric
distribution
electric
clouds,
decreases
adsorption
energy
transformation
oxygen‐containing
species.
Electrochemical
data
displays
overpotentials
only
195
mV,
220
224
mV
oxygen
evolution
reaction
(OER)
in
alkaline
freshwater,
simulated
seawater,
natural
seawater.
current
density
decay
negligible
after
100
h
stability
at
about
1.46
V
with
three‐electrode
system
low
cost
unique
this
work
provide
constructive
solution
designing
efficient
stable
OER
catalysts
future.
Nano Materials Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 1, 2024
Homogeneous
heterogeneous
(heterophase)
interfaces
regulated
with
low
energy
barriers
have
a
fast
response
to
applied
electric
fields
and
could
provide
unique
interfacial
polarization,
which
facilitate
the
transport
of
electrons
across
substrate.
Such
regulation
on
is
effective
in
modulating
electromagnetic
wave
absorbing
materials.
Herein,
we
construct
NbS2–NiS2
heterostructures
NiS2
nanoparticles
uniformly
grown
NbS2
hollow
nanospheres,
such
particular
structure
enhances
polarization.
The
strong
electron
transfer
at
interface
promotes
throughout
material,
results
less
scattering,
conduct
ion
loss
dielectric
polarization
relaxation,
improves
loss,
good
impedance
matching
material.
Consequently,
band
may
be
successful
tuned.
By
regulating
amount
NiS2,
finely
alternated
so
that
overall
wave-absorbing
performance
shifted
lower
frequencies.
With
content
15
wt%
an
absorber
thickness
1.84
mm,
minimum
reflection
14.56
GHz
−53.1
dB,
absorption
bandwidth
5.04
GHz;
more
importantly,
different
bands
−20
dB,
microwave
rate
reaches
99%
when
about
1.5–4.5
mm.
This
work
demonstrates
construction
homogeneous
improving
properties,
providing
guideline
for
synthesis
highly
efficient
Small,
Journal Year:
2024,
Volume and Issue:
20(26)
Published: Jan. 14, 2024
Abstract
Featured
with
the
attractive
properties
such
as
large
surface
area,
unique
atomic
layer
thickness,
excellent
electronic
conductivity,
and
superior
catalytic
activity,
layered
metal
chalcogenides
(LMCs)
have
received
considerable
research
attention
in
electrocatalytic
applications.
In
this
review,
approaches
developed
to
synthesize
LMCs‐based
electrocatalysts
are
summarized.
Recent
progress
composites
for
electrochemical
energy
conversion
applications
including
oxygen
reduction
reaction,
carbon
dioxide
evolution
hydrogen
overall
water
splitting,
nitrogen
reaction
is
reviewed,
potential
opportunities
practical
obstacles
development
of
high‐performing
active
substances
also
discussed.
This
review
may
provide
an
inspiring
guidance
developing
high‐performance
LMCs
