Nano-Micro Letters,
Год журнала:
2023,
Номер
16(1)
Опубликована: Ноя. 17, 2023
Abstract
Carbon-based
aerogels
derived
from
biomass
chitosan
are
encountering
a
flourishing
moment
in
electromagnetic
protection
on
account
of
lightweight,
controllable
fabrication
and
versatility.
Nevertheless,
developing
facile
construction
method
component
design
with
carbon-based
for
high-efficiency
wave
absorption
(EWA)
materials
broad
effective
bandwidth
(EAB)
strong
yet
hits
some
snags.
Herein,
the
nitrogen-doped
magnetic-dielectric-carbon
aerogel
was
obtained
via
ice
template
followed
by
carbonization
treatment,
homogeneous
abundant
nickel
(Ni)
manganese
oxide
(MnO)
particles
situ
grew
carbon
aerogels.
Thanks
to
optimization
impedance
matching
dielectric/magnetic
components
aerogels,
(Ni/MnO-CA)
suggests
praiseworthy
EWA
performance,
an
ultra-wide
EAB
7.36
GHz
minimum
reflection
loss
(RL
min
)
−
64.09
dB,
while
achieving
specific
253.32
dB
mm
−1
.
Furthermore,
reveals
excellent
radar
stealth,
infrared
thermal
management
capabilities.
Hence,
high-performance,
easy
fabricated
multifunctional
nickel/manganese
oxide/carbon
have
application
aspects
protection,
electronic
devices
aerospace.
High
density
and
skin
effect
restrict
the
research
progress
of
metal
predominated
electromagnetic
wave
absorbing
(EMA)
materials.
Although
some
works
try
to
solve
it,
they
do
not
focus
on
itself
involve
optimization
active
site
inherent
defects
metal.
In
this
work,
modulation
morphology,
composition,
interface,
defects,
conductivity
is
achieved
by
adjusting
ratio
copper
salt
reducing
agent
chitosan.
Uniquely,
appearance
twin
boundaries
(TBs)
accelerates
ability
homogeneous
interfaces
transfer
charges,
resists
oxidation
Cu0
,
keeps
high
electric
nanoparticles,
enhances
conduction
loss,
which
provides
a
boost
for
dissipation.
As
result,
absorber
(Cu-NC
(N-doped
carbon)-10,)
exhibits
an
ultra-width
effective
absorption
band
8.28
GHz
(9.72-18.00
GHz)
at
thickness
2.47
mm
minimum
reflection
loss
(RL)
value
-63.8
dB
with
2.01
mm.
short,
work
explores
EM
regulation
mechanism
TBs
compared
grain
(GBs),
new
insight
rational
design
EMA
Nano-Micro Letters,
Год журнала:
2023,
Номер
16(1)
Опубликована: Ноя. 17, 2023
Abstract
Carbon-based
aerogels
derived
from
biomass
chitosan
are
encountering
a
flourishing
moment
in
electromagnetic
protection
on
account
of
lightweight,
controllable
fabrication
and
versatility.
Nevertheless,
developing
facile
construction
method
component
design
with
carbon-based
for
high-efficiency
wave
absorption
(EWA)
materials
broad
effective
bandwidth
(EAB)
strong
yet
hits
some
snags.
Herein,
the
nitrogen-doped
magnetic-dielectric-carbon
aerogel
was
obtained
via
ice
template
followed
by
carbonization
treatment,
homogeneous
abundant
nickel
(Ni)
manganese
oxide
(MnO)
particles
situ
grew
carbon
aerogels.
Thanks
to
optimization
impedance
matching
dielectric/magnetic
components
aerogels,
(Ni/MnO-CA)
suggests
praiseworthy
EWA
performance,
an
ultra-wide
EAB
7.36
GHz
minimum
reflection
loss
(RL
min
)
−
64.09
dB,
while
achieving
specific
253.32
dB
mm
−1
.
Furthermore,
reveals
excellent
radar
stealth,
infrared
thermal
management
capabilities.
Hence,
high-performance,
easy
fabricated
multifunctional
nickel/manganese
oxide/carbon
have
application
aspects
protection,
electronic
devices
aerospace.
