Abstract
Water
electrolysis
is
considered
the
cleanest
method
for
hydrogen
production.
However,
widespread
popularization
of
water
splitting
limited
by
high
cost
and
scarce
resources
efficient
platinum
group
metals.
Hence,
it
imperative
to
develop
an
economical
high‐performance
electrocatalyst
improve
efficiency
evolution
reaction
(HER).
In
this
study,
a
hierarchical
porous
sandwich
structure
fabricated
through
dealloying
FeCoNiCuAl
2
Mn
high‐entropy
alloy
(HEA).
This
free‐standing
shows
outstanding
HER
performance
with
very
small
overpotential
9.7
mV
at
10
mA
cm
−2
low
Tafel
slope
56.9
dec
−1
in
1
M
KOH
solution,
outperforming
commercial
Pt/C.
Furthermore,
electrocatalytic
system
recorded
excellent
stability
over
100
h
constant
current
density
.
The
enhanced
electrochemical
activity
alloys
results
from
cocktail
effect,
which
detected
functional
theory
(DFT)
calculation.
Additionally,
micron‐
nano‐sized
pores
formed
during
etching
boost
mass
transfer,
ensuring
sustained
even
densities.
work
provides
new
insight
development
electrocatalysts
splitting.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(51)
Опубликована: Авг. 8, 2023
Abstract
The
harsh
operating
conditions
of
the
oxygen
evolution
reaction
(OER)
in
water
electrolysis
severely
degrade
activity
and
stability
electrocatalysts
due
to
elemental
leaching
or
particle
agglomeration.
Therefore,
it
is
crucial
incorporate
support
materials
that
effectively
immobilize
catalyst
particles
for
developing
efficient
OER
catalysts.
This
review
aims
highlight
role
MXene
as
a
material
improve
performance
First,
extended
mechanism
briefly
described
terms
effect
on
Then,
various
synthesis
methods
catalyst‐MXene
compounds
are
introduced,
important
properties
beneficial
performances
discussed.
electrocatalytic
results
enhanced
catalysts
effective
also
summarized.
Finally,
future
challenges
prospects
proposed
utilizing
an
excellent
electrocatalysis.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 6, 2024
Abstract
The
proactive
exploration
of
electrocatalytic
conversion
for
renewable
energy
valorization
is
tremendous
significance
in
addressing
the
issues
fossil
exhaustion,
among
which
critical
challenge
electrocatalysis
lies
rational
design
efficient
electrocatalysts
that
are
rich
earth.
Among
electrocatalysts,
heterostructured
materials
exhibits
immense
potential
optimization
noble
metals
and
elaboration
non‐precious
metal
with
durability.
In
this
review,
a
systematic
overview
modern
advances
range
reactions
described,
special
interfacial
brings
additional
functional
effects.
Subsequently,
various
synthesis
methods
characterization
techniques
also
summarized.
innovative
classification
heterostructures
junction,
crystal
structure,
structural
morphology,
properties
components
presented
review.
Finally,
possible
challenges
outlooks
future
further
discussed,
including
how
to
develop
more
sophisticated
synthesis,
characterization,
theoretical
calculation
methods,
will
serve
as
guiding
direction
interface
design.
This
review
aims
set
trajectory
providing
meaningful
inspiration
references
by
advancing
process
carbon
neutrality.
Abstract
Developing
non‐precious‐metal
electrocatalysts
that
can
operate
with
a
low
overpotential
at
high
current
density
for
industrial
application
is
challenging.
Heterogeneous
bimetallic
phosphides
have
attracted
much
interest.
Despite
hydrogen
evolution
reaction
(HER)
performance,
the
ordinary
oxygen
(OER)
performance
hinders
their
practical
use.
Herein,
it
shown
Fe‐doping
reverses
and
enlarges
interfacial
electrical
field
heterojunction,
turning
H
intermediate
favorable
binding
sites
HER
into
O
OER.
Specifically,
self‐supported
heterojunction
catalysts
on
nickel
foam
(CoP@Ni
2
P/NF
Fe‐CoP@Fe‐Ni
P/NF)
are
readily
synthesized.
They
only
require
overpotentials
of
266
274
mV
to
drive
large
1000
mA
cm
−2
(
j
)
OER,
respectively.
Furthermore,
water
splitting
cell
equipped
these
electrodes
requires
voltage
1.724
V
excellent
durability,
demonstrating
potential
application.
This
work
offers
new
insights
engineering
catalysts.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(29), С. 20323 - 20332
Опубликована: Июль 12, 2024
Addressing
the
sluggish
kinetics
in
alkaline
hydrogen
oxidation
reaction
(HOR)
is
a
pivotal
yet
challenging
step
toward
commercialization
of
anion-exchange
membrane
fuel
cells
(AEMFCs).
Here,
we
have
successfully
immobilized
indium
(In)
atoms
an
orderly
fashion
into
platinum
(Pt)
nanoparticles
supported
by
reduced
graphene
oxide
(denoted
as
O-Pt
