6XSHUE HOHFWURPDJQHWLF ZDYH DEVRUELQJ ...10.1038...6XSHUE HOHFWURPDJQHWLF ZDYH DEVRUELQJ FRPSRVLWHV...
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Superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films Jinsong Li 1,2 , Weibang Lu 3 , Jonghwan Suhr 4 , Hang Chen 5 , John Q. Xiao 5 and Tsu-Wei Chou 2 ★ 1 School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China. 2 Department of Mechanical Engineering, University of Delaware, Newark, DE 19716, United States. 3 Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China. 4 Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea. 5 Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States. ★ Corresponding author email: [email protected]
Transcript of 6XSHUE HOHFWURPDJQHWLF ZDYH DEVRUELQJ ...10.1038...6XSHUE HOHFWURPDJQHWLF ZDYH DEVRUELQJ FRPSRVLWHV...
Superb electromagnetic wave-absorbing composites based on large-scale
graphene and carbon nanotube films
Jinsong Li1,2, Weibang Lu3, Jonghwan Suhr4, Hang Chen5, John Q. Xiao5 and Tsu-Wei Chou2★
1 School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China.
2 Department of Mechanical Engineering, University of Delaware, Newark, DE 19716, United
States.
3 Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123,
China.
4 Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon 440-746,
Republic of Korea.
5 Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States.
★ Corresponding author email: [email protected]
Supplementary Note 1. SEM images of CNT film and CNT-Fe3O4-graphene film.
Supplementary Figure 1| (a) SEM image of CNT film. (b) SEM image of CNT-Fe3O4-graphene
film.
Supplementary Note 2. Process of the CNT film-Fe3O4-grpahene composite.
Supplementary Figure 2| Schematic of the process of the CNT film-Fe3O4-graphene composite.
Supplementary Note 3. CNT film has good wettability with ethylene glycol, CNT film was
completely immersed in the reaction solution.
Supplementary Figure 3| Photo images of (a) wettability of CNT film with ethylene glycol and (b)
CNT film immersed in ethylene glycol.
Supplementary Note 4. Relative complex permittivity and permeability of the CNT film-Fe3O4
composites with one, two, three, four, five, six and seven layers prepared from 0.05 M FeCl3.
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
30
35
Rea
l per
mit
tivi
ty
Frequency (GHz)
CNT film-Fe3O
4-1layer
CNT film-Fe3O
4-2layers
CNT film-Fe3O
4-3layers
CNT film-Fe3O
4-4layers
CNT film-Fe3O
4-5layers
CNT film-Fe3O
4-6layers
CNT film-Fe3O
4-7layers
a
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
Imag
inar
y pe
rmit
tivi
ty
Frequency (GHz)
b
0 2 4 6 8 10 12 14 16 180.5
1.0
1.5
2.0
Rea
l per
mea
bili
ty
Frequency (GHz)
c
0 2 4 6 8 10 12 14 16 18-0.5
0.0
0.5
1.0
Imag
inar
y p
erm
eabi
lity
Frequency (GHz)
d
Supplementary Figure 4| (a) real and (b) imaginary parts of the complex permittivity; (c) real and
(d) imaginary parts of complex permeability of the CNT film-Fe3O4 composites with one, two, three,
four, five, six and seven layers prepared from 0.05 M FeCl3.
Supplementary Note 5. Relative complex permittivity and permeability of the CNT film-Fe3O4
composites with six-layers prepared from 0.01, 0.02, 0.03, 0.04, 0.05 and 0.10 M FeCl3.
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
30
Rea
l per
mit
tivi
ty
Frequency (GHz)
CNT film-Fe3O
4-0.01M
CNT film-Fe3O
4-0.02M
CNT film-Fe3O
4-0.03M
CNT film-Fe3O
4-0.04M
CNT film-Fe3O
4-0.05M
CNT film-Fe3O
4-0.10M
a
0 2 4 6 8 10 12 14 16 180
2
4
6
8
10
12
Imag
inar
y pe
rmitt
ivity
Frequency (GHz)
b
0 2 4 6 8 10 12 14 16 180.6
0.9
1.2
1.5
Rea
l per
mea
bili
ty
Frequency (GHz)
c
0 2 4 6 8 10 12 14 16 18-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
Imag
inar
y p
erm
eabi
lity
Frequency (GHz)
d
Supplementary Figure 5| (a) real and (b) imaginary parts of the complex permittivity; (c) real and
(d) imaginary parts of complex permeability of the CNT film-Fe3O4 composites with six-layers
prepared from 0.01, 0.02, 0.03, 0.04, 0.05 and 0.10 M FeCl3.
Supplementary Note 6. Relative complex permittivity and permeability of the CNT film-Fe3O4
-0.04 M-LSG composites with one, two, three, four, five and six layers of graphene.
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
30
35
40
45
50
Rea
l per
mea
bili
ty
f (GHz)
CNT film-Fe3O
4-4-1L LSG
CNT film-Fe3O
4-4-2L LSG
CNT film-Fe3O
4-4-3L LSG
CNT film-Fe3O
4-4-4L LSG
CNT film-Fe3O
4-4-5L LSG
CNT film-Fe3O
4-4-6L LSG
a
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
Imag
inar
y pe
rmea
bili
tyf (GHz)
b
0 2 4 6 8 10 12 14 16 180.5
1.0
1.5
Rea
l per
mit
tivity
f (GHz)
c
0 2 4 6 8 10 12 14 16 18-1.0
-0.5
0.0
0.5
Imag
inar
y pe
rmit
tivity
f (GHz)
d
Supplementary Figure 6| (a) real and (b) imaginary parts of the complex permittivity; (c) real and
(d) imaginary parts of complex permeability of the CNT film-Fe3O4 -0.04 M-LSG composites with
one, two, three, four, five and six layers of graphene.
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