Chemical Society Reviews,
Год журнала:
2021,
Номер
51(1), С. 188 - 236
Опубликована: Дек. 6, 2021
Clean
and
sustainable
energy
needs
the
development
of
advanced
heterogeneous
catalysts
as
they
are
vital
importance
for
electrochemical
transformation
reactions
in
renewable
conversion
storage
devices.
Advances
nanoscience
material
chemistry
have
afforded
great
opportunities
design
optimization
nanostructured
electrocatalysts
with
high
efficiency
practical
durability.
In
this
review
article,
we
specifically
emphasize
synthetic
methodologies
versatile
surface
overcoating
engineering
reported
to
date
optimal
electrocatalysts.
We
discuss
recent
progress
overcoating-derived
potentially
applied
polymer
electrolyte
fuel
cells
water
electrolyzers
by
correlating
catalyst
intrinsic
structures
electrocatalytic
properties.
Finally,
present
perspectives
(electro)catalysts
their
deep
exploitation
a
broad
scope
applications.
Advanced Materials,
Год журнала:
2023,
Номер
35(30)
Опубликована: Апрель 18, 2023
Rare-earth
(RE)-based
transition
metal
oxides
(TMO)
are
emerging
as
a
frontier
toward
the
oxygen
evolution
reaction
(OER),
yet
knowledge
regarding
their
electrocatalytic
mechanism
and
active
sites
is
very
limited.
In
this
work,
atomically
dispersed
Ce
on
CoO
successfully
designed
synthesized
by
an
effective
plasma
(P)-assisted
strategy
model
(P-Ce
SAs@CoO)
to
investigate
origin
of
OER
performance
in
RE-TMO
systems.
The
P-Ce
SAs@CoO
exhibits
favorable
with
overpotential
only
261
mV
at
10
mA
cm-2
robust
electrochemical
stability,
superior
individual
CoO.
X-ray
absorption
spectroscopy
situ
Raman
reveal
that
Ce-induced
electron
redistribution
inhibits
CoO
bond
breakage
CoOCe
unit
site.
Theoretical
analysis
demonstrates
gradient
orbital
coupling
reinforces
covalency
Ce(4f)─O(2p)─Co(3d)
site
optimized
Co-3d-eg
occupancy,
which
can
balance
adsorption
strength
intermediates
turn
reach
apex
theoretical
maximum,
excellent
agreement
experimental
observations.
It
believed
establishment
Ce-CoO
set
basis
for
mechanistic
understanding
structural
design
high-performance
catalysts.
Energy & Environmental Science,
Год журнала:
2023,
Номер
17(1), С. 49 - 113
Опубликована: Ноя. 7, 2023
This
perspective
highlights
recent
advancements
in
innovative
strategies
to
provide
valuable
insights
into
the
potential
for
energy-saving
hydrogen
production
through
water
electrolysis.
Nano-Micro Letters,
Год журнала:
2023,
Номер
15(1)
Опубликована: Фев. 16, 2023
The
electrocatalytic
water
splitting
technology
can
generate
high-purity
hydrogen
without
emitting
carbon
dioxide,
which
is
in
favor
of
relieving
environmental
pollution
and
energy
crisis
achieving
neutrality.
Electrocatalysts
effectively
reduce
the
reaction
barrier
increase
efficiency.
Facet
engineering
considered
as
a
promising
strategy
controlling
ratio
desired
crystal
planes
on
surface.
Owing
to
anisotropy,
with
different
orientations
usually
feature
facet-dependent
physical
chemical
properties,
leading
differences
adsorption
energies
oxygen
or
intermediates,
thus
exhibit
varied
activity
toward
evolution
(HER)
(OER).
In
this
review,
brief
introduction
basic
concepts,
fundamental
understanding
mechanisms
well
key
evaluating
parameters
for
both
HER
OER
are
provided.
formation
facets
comprehensively
overviewed
aiming
give
scientific
theory
guides
realize
dominant
planes.
Subsequently,
three
strategies
selective
capping
agent,
etching
coordination
modulation
tune
summarized.
Then,
we
present
an
overview
significant
contributions
facet-engineered
catalysts
HER,
OER,
overall
splitting.
particular,
highlight
that
density
functional
calculations
play
indispensable
role
unveiling
structure–activity
correlation
between
plane
catalytic
activity.
Finally,
remaining
challenges
provided
future
prospects
designing
advanced
electrocatalysts
discussed.
Layered
double-hydroxide
(LDH)
has
been
considered
an
important
class
of
electrocatalysts
for
the
oxygen
evolution
reaction
(OER),
but
adsorption-desorption
behaviors
intermediates
on
its
surface
still
remain
unsatisfactory.
Apart
from
transition-metal
doping
to
solve
this
electrocatalytic
problem
LDH,
rare-earth
(RE)
species
have
sprung
up
as
emerging
dopants
owing
their
unique
4f
valence-electronic
configurations.
Herein,
Er
is
chosen
a
RE
model
improve
OER
activity
LDH
via
constructing
nickel
foam
supported
Er-doped
NiFe-LDH
catalyst
(Er-NiFe-LDH@NF).
The
optimal
Er-NiFe-LDH@NF
exhibits
low
overpotential
(191
mV
at
10
mA
cm-2
),
high
turnover
frequency
(0.588
s-1
and
activation
energy
(36.03
kJ
mol-1
which
are
superior
Er-free
sample.
Electrochemical
in
situ
Raman
spectra
reveal
facilitated
transition
Ni-OH
into
Ni-OOH
promoted
kinetics
through
effect.
Theoretical
calculations
demonstrate
that
introduction
facilitates
spin
crossover
valence
electrons
by
optimizing
d
band
center
NiFe-LDH,
leads
GO
-GHO
closer
kinetic
volcano
balancing
bonding
strength
*O
*OH.
Moreover,
presents
practicability
electrochemical
water-splitting
devices
with
driving
potential
well-extended
period.
Advanced Energy Materials,
Год журнала:
2022,
Номер
12(23)
Опубликована: Май 1, 2022
Abstract
The
development
of
robust
nano‐
and
microstructured
catalysts
on
highly
conductive
substrates
is
an
effective
approach
to
produce
active
binder‐free
electrodes
for
energy
conversion
storage
applications.
As
a
result,
nanostructured
with
designs
have
abundant
advantages
that
provide
superior
electrocatalytic
performance;
these
include
more
exposed
sites,
large
surface
area,
strong
adhesion
substrates,
facile
charge
transfer,
high
conductivity,
intrinsic
catalytic
activity,
fine‐tuning
its
electronic
nature
through
nanostructure
modification.
Notably,
the
interface
chemistry
electrocatalyst
plays
significant
role
in
their
optimized
activity
stability.
This
review
provides
overview
recent
progress
catalysts,
such
as
one,
two,
3D
water
splitting
via
hydrogen
evolution
reaction
oxygen
reaction,
beyond.
Furthermore,
this
focuses
current
challenges
synthesis
strategies
electrodes,
focus
impact
functional
property
relationships
enhanced
bifunctional
performance.
Finally,
outlook
future
advances
provided.
