Small,
Journal Year:
2024,
Volume and Issue:
20(45)
Published: July 29, 2024
In
light
of
the
intensifying
global
energy
crisis
and
mounting
demand
for
environmental
protection,
it
is
vital
importance
to
develop
advanced
hydrogen
conversion
systems.
Electrolysis
cells
production
fuel
cell
devices
utilization
are
indispensable
in
conversion.
As
one
electrolysis
cells,
water
splitting
involves
two
electrochemical
reactions,
evolution
reaction
oxygen
reaction.
And
reduction
coupled
with
oxidation
reaction,
represent
core
electrocatalytic
reactions
devices.
However,
inherent
complexity
lack
a
clear
understanding
structure-performance
relationship
these
have
posed
significant
challenges
advancement
research
this
field.
work,
recent
development
revealing
mechanism
systems
reviewed,
including
situ
characterization
theoretical
calculation.
First,
working
principles
applications
operando
measurements
unveiling
systematically
introduced.
Then
application
calculations
design
catalysts
investigation
discussed.
Furthermore,
opportunities
also
summarized
discussed
paving
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 30, 2024
Abstract
Oxygen
electrocatalysis,
as
the
pivotal
circle
of
many
green
energy
technologies,
sets
off
a
worldwide
research
boom
in
full
swing,
while
its
large
kinetic
obstacles
require
remarkable
catalysts
to
break
through.
Here,
based
on
summarizing
reaction
mechanisms
and
situ
characterizations,
structure–activity
relationships
oxygen
electrocatalysts
are
emphatically
overviewed,
including
influence
geometric
morphology
chemical
structures
electrocatalytic
performances.
Subsequently,
experimental/theoretical
is
combined
with
device
applications
comprehensively
summarize
cutting‐edge
according
various
material
categories.
Finally,
future
challenges
forecasted
from
perspective
catalyst
development
applications,
favoring
researchers
promote
industrialization
electrocatalysis
at
an
early
date.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(42), P. 29006 - 29016
Published: Oct. 9, 2024
Efficient
and
durable
catalysts
for
the
oxygen
evolution
reaction
are
essential
realizing
large-scale
application
of
water
electrolysis
technologies.
Here,
we
report
a
novel
Zn-doped
NiOOH
subnanowires
(Zn–NiOOH
SNWs)
catalyst
synthesized
via
electrochemical
reconstruction
Zn–NiMoO4
SNWs.
The
inclusion
Zn
triggers
transition
in
mechanism
from
adsorbate
to
lattice
mechanism,
resulted
Zn's
adaptive
adjustment
coordination
types,
which
also
improves
energetics,
thereby
enhancing
stability
activity.
Furthermore,
subnanowire
structure
provides
further
stabilization
Zn–NiOOH,
preventing
its
destructive
dissolution.
Remarkably,
Zn–NiOOH
SNWs
display
current
density
10
mA
cm–2
with
an
overpotential
only
179
mV
maintain
stable
operation
at
200
800
h
minimal
changes
overpotential,
establishing
them
as
one
most
effective
involving
alkaline
reaction.
When
utilized
anode
electrolyzer,
our
demonstrates
exceeding
500
under
water-splitting
cm–2,
indicating
promising
potential
practical
applications.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 16, 2024
In
the
context
of
oxygen
evolution
reaction
(OER),
construction
high-valence
transition
metal
sites
to
trigger
lattice
oxidation
mechanism
is
considered
crucial
for
overcoming
performance
limitations
traditional
adsorbate
mechanism.
However,
dynamic
during
poses
significant
challenges
stability
sites,
particularly
in
high-current-density
water-splitting
systems.
Here,
we
have
successfully
constructed
Co-O-Fe
catalytic
active
motifs
cobalt-iron
Prussian
blue
analogs
(CoFe-PBA)
through
plasma
bombardment,
effectively
activating
reactivity
while
sustaining
robust
stability.
Our
spectroscopic
and
theoretical
studies
reveal
that
bridged
enable
a
unique
double-exchange
interaction
between
Co
Fe
atoms,
promoting
formation
species
as
OER
centers
maintaining
low-valence
state,
preventing
its
dissolution.
The
resultant
catalyst
(CoFe-PBA-30)
requires
an
overpotential
only
276
mV
achieve
1000
mA
cm
National Science Review,
Journal Year:
2024,
Volume and Issue:
11(11)
Published: Oct. 15, 2024
ABSTRACT
An
in-depth
understanding
of
electrocatalytic
mechanisms
is
essential
for
advancing
electrocatalysts
the
oxygen
evolution
reaction
(OER).
The
emerging
oxide
pathway
mechanism
(OPM)
streamlines
direct
O–O
radical
coupling,
circumventing
formation
vacancy
defects
featured
in
lattice
(LOM)
and
bypassing
additional
intermediates
(*OOH)
inherent
to
adsorbate
(AEM).
With
only
*O
*OH
as
intermediates,
OPM-driven
stand
out
their
ability
disrupt
traditional
scaling
relationships
while
ensuring
stability.
This
review
compiles
latest
significant
advances
OPM-based
electrocatalysis,
detailing
design
principles,
synthetic
methods,
sophisticated
techniques
identify
active
sites
pathways.
We
conclude
with
prospective
challenges
opportunities
electrocatalysts,
aiming
advance
field
into
a
new
era
by
overcoming
constraints.
