With
the
rapid
advancement
of
artificial
intelligence,
smart
sensing
technologies,
and
batteries
with
high
power
density,
thermal
management
has
become
a
critical
issue
for
electronic
devices.
Phase
change
materials
(PCMs)
offer
promising
applications
in
management.
However,
it
is
significant
challenge
to
fabricate
PCMs
conductivity
(TC)
electromagnetic
interference
shielding
effectiveness
(EMI
SE)
while
maintaining
leakage-free
performance.
This
work
reports
solid–solid
phase
composites
TC
EMI
SE
enabled
by
covalent
functionalization
quasi-hyperbolic
framework.
The
material
(OP)
synthesized
via
nucleophilic
ring-opening
reaction
epoxy
groups,
where
octadecanol
(OD)
grafted
onto
side
chains
polyethylene-co-methyl
acrylate-co-glycidyl
methacrylate
(PEMAGMA).
Subsequently,
filled
into
electrochemically
expanded
graphite
(EEG)
framework
through
vacuum
filtration,
which
EEG
produced
using
an
electrochemical
expansion
method
SE.
obtained
OP/EEG
exhibited
excellent
properties,
including
very
low
leakage
(0.6%),
latent
heat
(86.45
J/g),
ultrahigh
(22.6
W/(m·K)),
superior
(110.28
dB).
shows
great
potential
improving
transfer
efficiency
interface
(TIMs)
practical
applications,
demonstrating
outlook
field
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 24, 2025
Abstract
The
great
application
potential
of
terahertz
(THz)
waves
in
communication,
imaging,
and
other
cutting‐edge
fields
makes
them
vulnerable
to
harsh
environments.
THz
electromagnetic
interference
(EMI)
shielding
materials
that
are
applicable
capable
with
standing
environments
critically
important
for
ensuring
the
reliable
operation
electronic
devices
urgently
needed.
Herein,
UV
light‐cured
SiC
whisker
(SiC
w
)@MXene/SiOC
composites
different
:MXene
mass
ratios
developed
through
electrostatic
self‐assembly.
influence
MXene
exfoliation
routes
on
EMI
performance
@MXene/SiOC
investigated
deep.
results
indicated
@HF‐MXene/SiOC
ratio
1:1
exhibited
best
performance,
abundant
heterointerfaces
formed
between
enhanced
wave
attenuation.
Subsequently,
Gyroid
triple
periodic
minimal
surface
(TPMS)
metastructures
fabricated
by
vat
photopolymerization
(VPP)
3D
printing.
All
obtained
a
thickness
1.3–2.7
mm
superior
properties
an
average
efficiency
(SE)
58.6–66.4
dB
0.2–1.6
THz.
Moreover,
Gyroid‐2.5
metastructure
even
low
thermal
conductivity
electron‐to‐thermal
conversion
properties.
facilitates
development
next‐generation
