Inorganic Chemistry,
Год журнала:
2024,
Номер
63(28), С. 13086 - 13092
Опубликована: Июнь 27, 2024
S-block
single
atoms
represent
an
ideal
catalyst
for
the
oxygen
reduction
reaction
(ORR)
as
they
can
suppress
Fenton
reaction.
However,
symmetry
of
s/p
orbitals
tends
to
generate
either
excessively
strong
or
weak
interaction
with
intermediates.
Herein,
Ca
coordinated
-S,
-OP,
and
three
N
(Ca/NPS-HC)
were
fabricated
modulate
adsorption
intermediates
promote
efficiency
s-block
ORR
catalysts.
The
experimental
results
from
demonstrated
that
Ca/NPS-HC
exhibited
outstanding
catalytic
capability
a
half-wave
potential
0.89
V,
kinetic
current
density
56.6
mA
cm
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 3, 2025
Abstract
Oxygen
electrocatalysis
is
a
core
reaction
in
renewable
energy
devices,
greatly
promoting
the
transformation
and
upgrading
of
structure.
Nonetheless,
performance
conversion
devices
hindered
by
large
overpotential
slow
kinetics
oxygen
electrocatalytic
reactions.
Recently,
single‐atom
catalysts
(SACs)
have
emerged
as
promising
contenders
field
because
their
exceptional
metal
atom
utilization,
distinctive
coordination
environment,
adjustable
electronic
properties.
This
review
presents
latest
advancements
design
Co‐based
SACs
for
electrocatalysis.
First,
OER
ORR
mechanisms
are
introduced.
Subsequently,
strategies
regulating
structure
summarized
three
aspects,
including
centers,
support
carriers.
A
particular
emphasis
given
to
relationship
between
properties
catalysts.
Afterward,
applications
explored.
Ultimately,
challenges
prospects
prospected.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 3, 2025
Abstract
Fe
single‐atom
on
N‐doped
carbon
(FeN‐C)
catalysts
emerge
as
promising
alternatives
to
commercial
Pt/C
for
the
oxygen
reduction
reaction.
Heterogeneous
atom
doping
is
proposed
be
effective
modulating
catalyst
performance.
Despite
this,
relationship
between
fine
coordination
structure
of
doped
atoms
and
catalytic
activity
central
metal
site
remains
poorly
understood.
Herein,
with
S
in
either
first
shell
(FeSN–C)
or
second
(FeN–SC)
active
are
synthesized
compare
effects
different
structure.
FeN–SC
exhibits
prominent
performance
a
half‐wave
potential
0.92
V
rotating
disk
electrode
peak
power
density
251
mW
cm
−2
zinc–air
battery.
Theoretical
studies
reveal
that
effectively
modulates
electronic
charge
transfer
at
center.
Compared
directly
coordinated
within
shell,
located
more
optimizing
adsorption
desorption
energy
barriers
oxygen‐containing
intermediates
sites.
This
study
provides
new
strategy
adjust
by
engineering
multilayer
center
catalyst.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(38)
Опубликована: Июнь 21, 2024
Electrochemical
reduction
reactions,
as
cathodic
processes
in
many
energy-related
devices,
significantly
impact
the
overall
efficiency
determined
mainly
by
performance
of
electrocatalysts.
Metal-organic
frameworks
(MOFs)
derived
carbon-supported
metal
materials
have
become
one
star
electrocatalysts
due
to
their
tunable
structure
and
composition
through
ligand
design
screening.
However,
for
different
electroreduction
required
active
species
vary
phase
component,
electronic
state,
catalytic
center
configuration,
hence
requiring
effective
customization.
From
this
perspective,
review
comprehensively
analyzes
structural
principles,
loading
strategies,
practical
performance,
complex
mechanisms,
thereby
providing
insights
guidance
future
rational
such
catalysts.
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
Angewandte Chemie,
Год журнала:
2024,
Номер
136(38)
Опубликована: Июнь 21, 2024
Abstract
Electrochemical
reduction
reactions,
as
cathodic
processes
in
many
energy‐related
devices,
significantly
impact
the
overall
efficiency
determined
mainly
by
performance
of
electrocatalysts.
Metal–organic
frameworks
(MOFs)
derived
carbon‐supported
metal
materials
have
become
one
star
electrocatalysts
due
to
their
tunable
structure
and
composition
through
ligand
design
screening.
However,
for
different
electroreduction
required
active
species
vary
phase
component,
electronic
state,
catalytic
center
configuration,
hence
requiring
effective
customization.
From
this
perspective,
review
comprehensively
analyzes
structural
principles,
loading
strategies,
practical
performance,
complex
mechanisms,
thereby
providing
insights
guidance
future
rational
such
catalysts.
