Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(41)
Published: Aug. 16, 2024
Abstract
Heterogeneous
single‐metal‐site
catalysts
(SMSCs),
often
referred
to
as
single‐atom
(SACs),
demonstrate
promising
catalytic
activity,
selectivity,
and
stability
across
a
wide
spectrum
of
reactions
due
their
rationally
designed
microenvironments
encompassing
coordination
geometry,
binding
ligands,
electronic
configurations.
However,
the
inherent
disorderliness
SMSCs
at
both
atomic
scale
nanoscale
poses
challenges
in
deciphering
working
principles
establishing
correlations
between
performances
SMSCs.
The
rearrangement
randomly
dispersed
single
metals
into
homogeneous
atomic‐precisely
structured
periodic
single‐metal
site
(PSMSCs)
not
only
simplifies
chaos
systems
but
also
unveils
new
opportunities
for
manipulating
performance
gaining
profound
insights
reaction
mechanisms.
Moreover,
synergistic
effects
adjacent
integration
arrangement
further
broaden
industrial
application
scope
This
perspective
offers
comprehensive
overview
recent
advancements
outlines
prospective
avenues
research
design
characterizations
PSMSCs,
while
acknowledging
formidable
encountered
prospects
that
lie
ahead.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(38)
Published: July 31, 2024
Abstract
Aqueous
zinc–iodine
batteries
(AZIBs)
are
highly
appealing
for
energy
requirements
owing
to
their
safety,
cost‐effectiveness,
and
scalability.
However,
the
inadequate
redox
kinetics
severe
shuttling
effect
of
polyiodide
ions
impede
commercial
viability.
Herein,
several
Zn‐MOF‐derived
porous
carbon
materials
designed,
further
preparation
iron–doped
(Fe–N–C,
M9)
with
varied
Fe
doping
contents
is
optimized
based
on
a
facile
self‐assembly/carbonization
approach.
M9,
atomic
coordinated
nitrogen
atoms,
employed
as
an
efficient
cathode
host
AZIBs.
Functional
modifications
hosts
involving
species
levels
investigated.
The
adsorption
tests,
in
situ
Raman
spectroscopy,
UV–vis
results
demonstrate
capability
charge‐discharge
mechanism
iodine
species.
Furthermore,
experimental
findings
theoretical
analyses
have
proven
that
conversion
enhanced
through
physicochemical
confinement
effect.
This
study
offers
basic
principles
strategic
design
single‐atom
dispersed
high‐performance
Flexible
soft–pack
battery
wearable
microbattery
applications
also
implications
future
long‐life
aqueous
designs.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: Sept. 26, 2024
Abstract
Atomic-scale
doping
strategies
and
structure
design
play
pivotal
roles
in
tailoring
the
electronic
physicochemical
property
of
electromagnetic
wave
absorption
(EMWA)
materials.
However,
relationship
between
configuration
(EM)
loss
mechanism
has
remained
elusive.
Herein,
drawing
inspiration
from
DNA
transcription
process,
we
report
successful
synthesis
novel
situ
Mn/N
co-doped
helical
carbon
nanotubes
with
ultrabroad
EMWA
capability.
Theoretical
calculation
EM
simulation
confirm
that
orbital
coupling
spin
polarization
Mn–N
4
–C
configuration,
along
cross
generated
by
structure,
endow
converters
enhanced
loss.
As
a
result,
HMC-8
demonstrates
outstanding
performance,
achieving
minimum
reflection
−63.13
dB
at
an
ultralow
thickness
1.29
mm.
Through
precise
tuning
graphite
domain
size,
HMC-7
achieves
effective
bandwidth
(EAB)
6.08
GHz
2.02
mm
thickness.
Furthermore,
constructing
macroscale
gradient
metamaterials
enables
ultrabroadband
EAB
12.16
only
5.00
mm,
maximum
radar
section
reduction
value
reaching
36.4
m
2
.
This
innovative
approach
not
advances
understanding
metal–nonmetal
co-doping
but
also
realizes
broadband
EMWA,
thus
contributing
to
development
mechanisms
applications.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(36), P. 14585 - 14607
Published: Jan. 1, 2024
The
development
of
high-efficiency
atomic-level
catalysts
for
energy-conversion
and
-storage
technologies
is
crucial
to
address
energy
shortages.
spin
states
diatomic
(DACs)
are
closely
tied
their
catalytic
activity.
Adjusting
the
DACs'
active
centers
can
directly
modify
occupancy
d-orbitals,
thereby
influencing
bonding
strength
between
metal
sites
intermediates
as
well
transfer
during
electro
reactions.
Herein,
we
discuss
various
techniques
characterizing
atomic
strategies
modulating
center
states.
Next,
outline
recent
progress
in
study
effects
DACs
oxygen
reduction
reaction
(ORR),
evolution
(OER),
hydrogen
(HER),
electrocatalytic
nitrogen/nitrate
(eNRR/NO
Journal of Materials Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
Abstract
As
the
demand
for
sustainable
energy
solutions
grows,
developing
efficient
conversion
and
storage
technologies,
such
as
fuel
cells
metal-air
batteries,
is
vital.
Oxygen
Reduction
Reaction
(ORR)
a
significant
limitation
in
electrochemical
systems
due
to
its
slower
kinetics.
Although
Pt-based
catalysts
are
commonly
used
address
this
challenge,
their
high
cost
suboptimal
performance
remain
obstacles
further
development.
This
review
offers
comprehensive
overview
of
advanced
support
materials
aimed
at
improving
efficiency,
durability,
cost-effectiveness
catalysts.
By
examining
range
materials,
including
mesoporous
carbon,
graphene,
carbon
nanotubes,
metal
oxides,
clarifies
relationship
between
structural
properties
these
supports
influence
on
ORR
performance.
Additionally,
it
discusses
fundamental
characteristics
practical
applications
cells,
explores
potential
future
directions
optimizing
advance
technologies.
Future
research
could
focus
nano-engineering
composite
material
development
unlock
full
catalysts,
significantly
enhancing
economic
viability
applications.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 21, 2025
Abstract
Advancing
energy
conversion
technologies
requires
cost‐efficient
electrocatalysts
for
the
oxygen
reduction
reaction
(ORR).
Iron
phthalocyanine
(FePc)
emerges
as
a
scalable
and
economical
ORR
electrocatalyst.
However,
Fe–N
4
configuration
in
FePc
still
falls
short
of
satisfied
activity
stability
under
electrocatalytic
conditions.
Here,
an
effective
f‐p‐d
(Eu–O–Fe)
gradient
orbital
coupling
strategy
is
introduced
by
integrating
with
Eu
2
O
3
(FePc/Eu
)
to
enhance
spin
state
performance
Fe
center
through
precisely
designed,
synthetic
approach.
The
Eu─O
bond
promotes
electron
delocalization
shifts
from
low‐spin
intermediate‐spin,
increasing
e
g
occupancy.
This
modification
optimizes
adsorption
oxygen‐containing
intermediates
lowers
barrier.
Notably,
increased
accelerates
charge
transfer
releasing
more
unpaired
electrons,
improving
kinetics.
Furthermore,
f‐band
serves
buffer
layer
compensation
during
ORR,
further
stabilizing
covalency
electronic
atomic
boosting
durability.
one‐batch
synthesis
produces
exceeding
300
g
FePc/Eu
,
achieving
half‐wave
potential
0.931
V
(vs
RHE)
at
cost
less
than
1/15
commercial
Pt/C.
It
demonstrates
exceptional
aluminum–air
batteries,
highlighting
its
significant
application
potential.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 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.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 7, 2025
Deducing
the
local
electronic
and
atomic
structural
changes
in
active
sites
during
electrochemical
carbon
dioxide
reduction
is
essential
for
elucidating
intrinsic
mechanisms
developing
highly
catalysts
that
are
stable
a
long
duration.
Herein,
utilizing
operando
valence-to-core
X-ray
emission
spectroscopy
high
energy-resolution
fluorescence
detected
absorption
near-edge
structure,
combined
with
spectroscopic
calculations,
structure
evolutions
of
model
cobalt
phthalocyanine
(CoPc)
were
quantitatively
elucidated.
Under
real
reaction
conditions,
CoPc
undergoes
reversible
angle
distortion
while
maintaining
constant
metal-ligand
bond
length,
causing
energy
levels
split
d
orbitals
electron
density
molecular
orbitals.
The
further
influences
interactions
among
ligands,
intermediates,
metal
centers.
change
CO
Faraday
efficiency
was
also
determined,
demonstrating
robustness.
demonstrated
findings
serve
as
an
important
contribution
to
determine
structure-performance
relationship
which
enlightens
rational
design
atomically
dispersed
site
activity
emphasize
capabilities
resolution
toward
analyzing
metal-implanted
N-doped
catalysts.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 3, 2025
Abstract
Atomically
dispersed
iron‐nitrogen‐carbon
(Fe‐N‐C)
catalysts
have
demonstrated
promising
oxygen
reduction
reaction
(ORR)
activity.
It
poses
a
formidable
challenge
to
simultaneously
optimize
the
adsorption
energies
of
multiple
intermediates
at
single
active
site.
In
addition,
lack
long‐term
stability
remains
significant
problem
due
unavoidable
2‐electron
by‐product
hydrogen
peroxide
(H
2
O
).
Here,
sites
are
achieved
modulate
energy
while
removing
by
growing
second
site
CeO
nanoparticles
in
situ
on
surface
hollow‐structured
Fe‐N
5
,
thus
improving
efficiency
and
/CeO
.
Density
functional
theory
(DFT)
calculations
employed
probe
into
synergistic
catalytic
interaction
between
proposing
relay
mechanism
underlying
enhanced
Furthermore,
catalyst
is
ability
scavenge
inhibit
its
destructive
effects
Additionally,
liquid
Al
–
air
batteries
equipped
with
display
higher
power
density.
This
work
proffers
an
innovative
vista
for
conception
refinement
multi‐active‐site
excellent
performance
prolonged
lifespan.
