Abstract
The
electrochemical
oxygen
evolution
reaction
(OER)
can
be
combined
with
various
reactions
to
fabricate
energy
conversion
and
storage
devices
while
the
slow
kinetics
poor
mass
transfer
capability
at
high
current
densities
are
key
constraints
its
large‐scale
application.
Therefore,
this
review
primarily
focuses
on
design
optimization
of
structures
TM‐metal‐based
OER
catalysts.
Nanostructuring,
porous
design,
creation
hierarchical
architectures
have
been
applied
during
catalyst
synthesis
enhance
surface
area
accessibility,
thereby
improving
catalytic
efficiency.
Strategies
including
doping,
substrate
invitation,
soft/hard
templating
utilized
accelerate
as
well
ion/electron
conduction
efficiency
for
overall
improvement
performance
These
developments
underline
critical
role
advanced
material
in
achieving
high‐performance
catalysts
highlight
potential
TM‐based
materials
cost‐effective
scalable
applications.
Abstract
In
this
work,
a
novel
liquid
nitrogen
quenching
strategy
is
engineered
to
fulfill
iron
active
center
coordination
reconstruction
within
carbide
(Fe
3
C)
modified
on
biomass‐derived
nitrogen‐doped
porous
carbon
(NC)
for
initiating
rapid
hydrogen
and
oxygen
evolution,
where
the
chrysanthemum
tea
(elm
seeds,
corn
leaves,
shaddock
peel,
etc.)
treated
as
biomass
source
Fe
C
NC.
Moreover,
original
thermodynamic
stability
changed
through
corresponding
force
generated
by
phase
transformation
induced
with
rich
vacancies
increasing
instantaneous
temperature
drop
amplitude.
Noteworthy,
optimizing
intermediate
absorption/desorption
achieved
new
phases,
coordination,
vacancies.
The
C/NC‐550
(550
refers
temperature)
demonstrates
outstanding
overpotential
evolution
reaction
(26.3
mV
at
−10
mA
cm
−2
)
(281.4
10
),
favorable
overall
water
splitting
activity
(1.57
V
).
Density
functional
theory
(DFT)
calculations
further
confirm
that
treatment
can
enhance
intrinsic
electrocatalytic
efficiently
adsorption
free
energy
of
intermediates.
Overall,
above
results
authenticate
open
up
possibilities
obtaining
highly
electrocatalysts
generation
green
conversion
systems.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 22, 2024
Abstract
Rare
earth
(RE)‐based
perovskites
are
considered
as
promising
platform
for
oxygen
evolution
reaction
(OER)
due
to
their
low
cost
and
tunable
structures.
However,
the
systematic
synthesis
of
perovskite
catalysts
with
satisfactory
performance
has
rarely
been
reported.
Herein,
a
general
synthetic
protocol
RE‐substituted
LaCoO
3
(RE‐LCO)
is
demonstrated.
Particularly,
after
loaded
RuO
2
,
as‐prepared
:0.2Ce‐LCO
hybrid
structures
exhibit
OER
overpotential
135
mV
at
10
mA
cm
−2
in
1.0
m
KOH,
together
remarkable
long‐term
operation,
representing
one
most
efficient
robust
Ru‐based
catalysts.
Comprehensive
experimental
results
indicate
that
enhanced
mechanism
attributed
Ce‐substitution,
which
alters
geometric
configuration
CoO
6
octahedra
generates
more
vacancies.
Furthermore,
interaction
between
Ce‐LCO
stabilizes
valence
state
Ru
site.
Theoretical
calculations
corroborate
Co
3d
orbitals
overlap
Ce
4f
near
Fermi
level,
greatly
improving
electron
transfer
atoms.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 5, 2024
Abstract
Unraveling
the
fundamental
mechanisms
of
sodium
ion
adsorption
behavior
is
crucial
for
guiding
design
electrode
materials
and
enhancing
performance
capacitive
deionization
systems.
Herein,
optimization
systematically
investigated
through
robust
d–d
orbital
interactions
within
zinc‐doped
iron
carbide,
facilitated
by
a
novel
liquid
nitrogen
quenching
treatment.
Liquid
treatment
can
enhance
coordination
number,
strengthen
interactions,
promote
electron
transfer,
shift
d‐band
center
Fe
closer
to
Fermi
level,
thereby
ions
energy.
Consequently,
obtained
material
achieves
superior
gravimetric
capacity
121.1
mg
g
−1
attractive
cyclic
durability.
The
highly
competitive
compared
vast
majority
related
research
works
in
field
deionization.
Furthermore,
adsorption/desorption
are
substantiated
ex
situ
techniques,
revealing
dynamic
atomic
electronic
structure
evolutions
under
operational
conditions.
This
work
demonstrates
that
optimizing
via
modulation
enabled
an
effective
approach
developing
efficient
materials.
