Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 30, 2024
Abstract
Deterministic
fabrication
of
highly
thermally
conductive
composite
film
with
satisfying
low‐frequency
electromagnetic
(EM)
absorption
performance
exhibits
great
potential
in
advancing
the
application
5G
smart
electric
devices
but
persists
challenge.
Herein,
a
multifunctional
flexible
combined
hetero‐structured
Fe
6
W
C‐FeWO
4
@C
(FWC−O@C)
as
absorber
and
aramid
nanofibers
(ANFs)
matrix
was
prepared.
Driven
by
an
atomic
gradient
infusion
reduction
strategy,
carbon
atoms
absorbers
can
be
precisely
relocated
from
shell
to
core
oxometallate
lattice,
triggering
situ
carbothermic
for
customization
unique
oxometallate‐carbide
heterojunctions
surface
geometrical
structure.
Such
reconstruction
process
effectively
regulates
interface
electronic
structure
magnetic
configuration,
resulting
enhanced
polarization
loss
abundant
heterointerfaces
crystal
defects
hierarchical
endowed
coupling
interaction,
which
jointly
contributes
efficient
EM
performance.
Eventually,
optimized
FWC−O@C
microplate
broad
bandwidth
surpassed
entire
C
band,
assembled
FWC−O@C/ANFs
also
performs
high
thermal
conductivity
over
2500
%
higher
than
that
pure
ANFs.
These
findings
provide
new
insight
into
affected
properties
generalized
methodological
guidance
preparing
films.
eScience,
Journal Year:
2024,
Volume and Issue:
unknown, P. 100292 - 100292
Published: June 1, 2024
Developing
advanced
nanocomposite
phase
change
materials
(PCMs)
integrating
zero-energy
thermal
management,
microwave
absorption,
photothermal
therapy
and
electrical
signal
detection
can
promote
the
leapfrog
development
of
flexible
wearable
electronic
devices.
For
this
goal,
we
propose
a
multidimensional
collaborative
strategy
combining
two-dimensional
(2D)
MXene
nanosheets
with
metal-organic
framework-derived
one-dimensional
(1D)
carbon
nanotubes
(CNTs)
zero-dimensional
(0D)
metal
nanoparticles.
After
encapsulating
paraffin
wax
(PW)
in
three-dimensional
(3D)
networked
MXene/CoNi-C,
resulting
composite
PCMs
exhibit
excellent
energy
storage
capacity
long-term
thermally
reliable
stability.
Benefiting
from
synergistically
enhanced
effects
CNTs,
Co/Ni
nanoparticles
MXene,
PW@MXene/CoNi-C
capture
photons
efficiently
transfer
phonons
quickly,
yielding
an
ultrahigh
conversion
efficiency
97.5%.
Additionally,
high
absorption
minimum
reflection
loss
−49.3
dB
at
8.03
GHz
heat-related
application
scenarios.
More
attractively,
corresponding
film
simultaneously
achieve
management
electromagnetic
shielding
devices,
as
well
for
individuals.
This
functional
integration
design
provides
important
reference
developing
multifunctional
