Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 8, 2025
Abstract
The
Sb‐hybridization
strategy
enables
the
precise
construction
of
p‐n
heterojunctions,
which
significantly
enhances
electromagnetic
wave
(EMW)
absorption
performance
by
optimizing
interface
polarization.
In
this
study,
an
innovative
in
situ
ion‐exchange
method
is
developed
to
implement
Sb
hybridization,
establishing
built‐in
electric
fields
within
CoS
2
/Sb
S
3
@CNFs
that
amplify
polarization
relaxation
loss.
This
structural
design
synergistically
combines
a
carbon‐skeleton‐induced
conductive
network
with
magnetic
loss
mechanisms
,
ultimately
yielding
exceptional
EMW
absorber.
optimized
composite
demonstrates
remarkable
attenuation
capabilities,
achieving
minimum
reflection
(RL
min
)
−57.53
dB
at
mm
and
effective
bandwidth
(EAB
max
7.28
GHz
(covering
X‐band
(8–12
GHz)
Ku‐band
(12–18
GHz)).
study
not
only
provides
novel
for
designing
advanced
absorbers
but
also
highlights
significance
heterojunction
engineering
functional
composites.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 24, 2025
Abstract
The
regulation
of
heteroatoms
and
heterogeneous
interface
characteristics
has
emerged
as
a
promising
strategy
to
enhance
electromagnetic
wave
(EMW)
absorption.
However,
challenges
remain
in
precisely
controlling
heteroatom
doping
fully
understanding
the
synergistic
mechanisms
between
interfaces.
Here,
novel
is
proposed
for
enhancing
polarization
relaxation
through
optimization.
Carbon
nanofiber
(CNF)‐based
Ni–Fe
nanocubes
decorated
with
N
O
are
synthesized
by
pyrolyzing
Fe‐based
metal–organic
frameworks
under
different
atmospheres
(NH
3
,
H
2
/Ar,
Ar).
results
show
that
N,
play
crucial
role
effect
regulating
electronic
structure
diverse
structures.
Finally,
Fe
N@Ni
Fe/CNFs
exhibit
excellent
EMW
absorption
at
2.3
mm,
minimum
reflection
loss
−56.75
dB,
an
effective
bandwidth
6.7
GHz.
Additionally,
these
materials
display
remarkable
corrosion
resistance
due
their
unique
fiber
network
structure.
This
study
highlights
optimizing
effects,
offering
valuable
insights
design
advanced
heteroatom‐optimized
heterointerfaces.
