Exploring innovative trends and advancements in rechargeable zinc-air batteries
Inorganic Chemistry Communications,
Год журнала:
2024,
Номер
170, С. 113288 - 113288
Опубликована: Окт. 10, 2024
Язык: Английский
Comprehensive Insight Into Electronic Modulation of Rare‐Earth Elements for Enhancing Electrocatalytic Performance of Atomically Dispersed Materials
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 2, 2025
Abstract
Atomically
dispersed
materials
have
been
a
thriving
research
field
due
to
their
maximum
atomic
utilization
and
remarkable
performance
in
energy
conversion
storage
systems.
Owing
the
large
radius,
strong
oxophilicity,
unique
electronic
properties,
rare‐earth
(RE)
elements
widely
investigated
as
oxide
carriers
promoters
atomically
manipulate
regulate
structure
of
active
species.
Single‐atom
state
with
an
adjustable
coordination
environment
on
N‐doped
carbon
endows
RE
metals
special
states
outstanding
catalytic
performances.
A
thorough
comprehension
modulation
mechanism
paves
way
for
construction
advanced
RE‐based
electrocatalysts
high
activity,
stability,
selectivity.
This
review
provides
widespread
insight
into
roles
modulating
properties
combined
structure–performance
relationship
electrocatalysis
processes.
The
characteristic
physical
chemical
are
highlighted,
synthetic
strategy
is
discussed.
Finally,
summary
perspectives
rational
design
development
highly
efficient
catalysts
proposed.
aims
provide
guideline
promoting
effective
functional
materials.
Язык: Английский
Rare Earth Ce/CeO2 Electrocatalysts: Role of High Electronic Spin State of Ce and Ce3+/Ce4+ Redox Couple on Oxygen Reduction Reaction
Nanomaterials,
Год журнала:
2025,
Номер
15(8), С. 600 - 600
Опубликована: Апрель 14, 2025
With
unique
4f
electronic
shells,
rare
earth
metal-based
catalysts
have
been
attracting
tremendous
attention
in
electrocatalysis,
including
oxygen
reduction
reaction
(ORR).
In
particular,
atomically
dispersed
Ce/CeO2-based
explored
extensively
due
to
several
features.
This
review
article
provides
a
comprehensive
understanding
of
(i)
the
significance
effect
Ce
high-spin
state
on
ORR
activity
enhancement
Pt
and
non-pt
electrocatalysts,
(ii)
spatially
confining
stabilizing
ceria
generation
transition
catalysts,
(iii)
experimental
theoretical
evidence
Ce3+
↔
Ce4+
redox
pain
radical
scavenging,
(iv)
electrons
d-band
center
electron
transfer
between
N-doped
carbon
metal
for
enhanced
activity,
(v)
Pt/CeO2/carbon
heterojunctions
stability
electrocatalyst
ORR.
Among
strategies
synthesizing
Ce/CeO2
metal–organic
framework
(MOF)-derived
are
being
perused
tendency
readily
coordinate
with
O-
N-containing
ligands,
which
upon
undergoing
pyrolysis,
results
formation
high
surface
area,
porous
networks
metallic/clusters/nanoparticles
active
sites.
paper
an
overview
recent
advancements
regarding
derived
from
MOF
precursor
fuel
cells
metal–air
battery
applications
we
conclude
insights
into
key
issues
future
development
directions.
Язык: Английский
In situ regulating the accessibility and structure of Fe-based catalytic sites to break trade-off between the activity and stability for oxygen reduction
Journal of Colloid and Interface Science,
Год журнала:
2025,
Номер
697, С. 137910 - 137910
Опубликована: Май 16, 2025
Язык: Английский
Weakening the Dissociation Barrier of Hydroxyl in Fe–N–C Catalysts via Precisely Manipulating d–p Orbital Hybridization Behaviors for Efficient Oxygen Reduction Reaction
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 27, 2025
Abstract
The
fine‐tuning
of
*OH
adsorption
strength
serves
as
a
crucial
strategy
for
optimizing
the
oxygen
reduction
reaction
(ORR)
performance
in
Fe–N–C
catalysts.
This
study
proposes
comprehensive
integration
theoretical
predictions
and
experimental
validation,
demonstrating
rationality
feasibility
asymmetric
multiple
doping
Co
B
second
coordination
sphere
FeN
4
(Fe,
Co/NCB)
to
facilitate
desorption.
Density
functional
theory
(DFT)
calculations
predict
that
strategic
coupling
effectively
modulates
hybridization
behavior
between
3
d
z
2
orbital
Fe
active
sites
p
intermediates.
interaction
elevates
occupancy
antibonding
orbitals,
thereby
promoting
dissociation.
Furthermore,
enhanced
stability
Fe─N
bonds
Fe,
Co/NCB
suppresses
demetallization
process
sites.
Guided
by
predictions,
synergistic
“metal
substitution
spatial
confinement
encapsulation”
is
developed
synthesize
Co/NCB.
As
expected,
demonstrates
outstanding
ORR
activity
alkaline
acidic
electrolytes,
with
assembled
zinc–air
batteries
delivering
exceptional
power
density
cycling
stability.
elucidates
critical
role
heteroatom
modulating
catalytic
Язык: Английский
Engineering CoN4 and FeN4 Dual Sites with Adjacent Nanoclusters on Flexible Porous Carbon Fibers for Enhanced Electrocatalytic Oxygen Reduction and Evolution
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 11, 2024
Abstract
Dual‐atom
catalysts
(DACs)
possess
tunable
electronic
structures
and
efficient
atom
utilization,
making
them
highly
promising
for
catalyzing
the
oxygen
reduction
reaction/oxygen
evolution
reaction
(ORR/OER).
However,
achieving
high
catalytic
activity
stability
both
ORR
OER
in
DACs
remains
a
challenge.
Herein,
flexible
membrane
of
porous
carbon
fiber
anchored
with
atomically
scattered
CoN
4
/FeN
dual
sites
adjacent
Co
2
Fe
/Fe
5
nanoclusters
(Co,
Fe‐DACs/NCs@PCF)
is
synthesized.
The
local
geometry
structure
sites,
which
act
as
centers
ORR/OER,
are
finely
regulated
by
neighboring
nanoclusters.
This
unique
imparts
Co,
Fe‐DACs/NCs@PCF
exceptional
durability
toward
outperforming
performance
single‐atom
containing
only
or
FeN
well
commercial
Pt/C
RuO
catalysts.
Zinc–air
battery
employing
cathode
exhibits
outstanding
stability,
maintaining
cyclability
over
1500
h,
+
air
cathode.
Theoretical
calculations
highlight
distinct
synergies
between
(Co
)
clusters
(CoN
optimize
coupling
strength
Fe(Co)─OH
at
potential‐determining
steps
thus
improve
(OER)
kinetics.
study
lays
theoretical
practical
foundation
rational
design
heterostructure
featuring
coexisting
within
fibers.
Язык: Английский
Design and application of a liquid metal ball-supported layered double hydroxide core–shell structure as highly efficient catalysts for the oxygen evolution reaction in rechargeable zinc-air batteries
Chemical Engineering Journal,
Год журнала:
2024,
Номер
unknown, С. 157924 - 157924
Опубликована: Ноя. 1, 2024
Язык: Английский