Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
16(1)
Published: Nov. 23, 2023
The
utilization
of
eco-friendly,
lightweight,
high-efficiency
and
high-absorbing
electromagnetic
interference
(EMI)
shielding
composites
is
imperative
in
light
the
worldwide
promotion
sustainable
manufacturing.
In
this
work,
magnetic
poly
(butyleneadipate-co-terephthalate)
(PBAT)
microspheres
were
firstly
synthesized
via
phase
separation
method,
then
PBAT
composite
foams
with
layered
structure
was
constructed
through
supercritical
carbon
dioxide
foaming
scraping
techniques.
merits
integrating
ferroferric
oxide-loaded
multi-walled
nanotubes
(Fe
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(5), P. 7308 - 7318
Published: Jan. 24, 2023
Exploring
electromagnetic
interference
(EMI)
shielding
materials
with
ultra-efficient
EMI
effectiveness
(SE)
and
an
absorption-dominated
mechanism
is
urgently
required
for
fundamentally
tackling
radiation
pollution.
Herein,
zeolitic
imidazolate
framework-67
(ZIF-67)/MXene/cellulose
aerogels
were
first
prepared
via
a
simple
solution
mixing-regeneration
freeze-drying
process.
Subsequently,
they
are
converted
into
electric/magnetic
hybrid
carbon
(Co/C/MXene/cellulose-derived
aerogels)
through
facile
pyrolysis
strategy.
ZIF-67-derived
porous
Co/C
could
provide
the
additional
magnetic
loss
capacity.
The
resultant
exhibit
hierarchically
structure,
complementary
waves
(EMWs)
mechanisms,
abundant
heterointerfaces.
construction
of
architecture
synergy
greatly
alleviate
impedance
mismatching
at
air-specimen
interface,
which
enables
more
EMWs
to
enter
consumption.
Moreover,
numerous
heterointerfaces
among
Co/C,
Ti3C2Tx
MXene,
cellulose-derived
skeleton
induce
generation
multiple
polarization
losses
containing
interfacial
dipole
polarization,
further
dissipate
EMWs.
aerogel
low
density
(85.6
mg/cm3)
achieves
ultrahigh
SE
86.7
dB
superior
absorption
coefficient
0.72
simultaneously.
This
work
not
only
offers
novel
approach
design
high-performance
entailing
reflection
characteristic
but
also
broadens
applicability
in
aerospace,
precision
electronic
devices,
military
stealth
instruments.
ACS Applied Materials & Interfaces,
Journal Year:
2022,
Volume and Issue:
14(36), P. 41468 - 41480
Published: Sept. 1, 2022
Developing
high-efficiency
electromagnetic
interference
(EMI)
shielding
composite
films
with
outstanding
flexibility
and
excellent
thermal
management
capability
is
vital
but
challenging
for
modern
integrated
electronic
devices.
Herein,
a
facile
two-step
vacuum
filtration
method
was
used
to
fabricate
ultrathin,
flexible,
multifunctional
cellulose
nanofiber
(CNF)-based
an
asymmetric
layered
architecture.
The
structure
composed
of
low-conductivity
CoFe2O4@MXene/CNF
layer
highly
conductive
silver
nanowires
(AgNWs)/CNF
layer.
Benefiting
from
the
rational
placement
impedance
matching
layer,
as
well
synergistic
effect
electric
magnetic
losses,
resultant
film
exhibits
extremely
high
EMI
effectiveness
(SE)
73.3
dB
average
SE
70.9
low
reflected
efficiency
4.9
at
only
0.1
mm
thickness.
Sufficiently
reliable
(over
95%
reservation)
attained
even
after
suffering
continuous
physical
deformations
long-term
chemical
attacks.
Moreover,
prepared
exhibit
extraordinary
flexibility,
strong
mechanical
properties,
satisfactory
capability.
This
work
offers
viable
strategy
exploiting
performance
attractive
capacity,
present
extensive
application
potential
in
aerospace,
artificial
intelligence,
advanced
electronics,
stealth
technology,
national
defense
industry,
under
harsh
environments.
