TY - JOUR
T1 - Lightweight and flexible 3D graphene microtubes membrane for high-efficiency electromagnetic-interference shielding
AU - Yin, Xuemin
AU - Li, Hejun
AU - Han, Liyuan
AU - Meng, Jiachen
AU - Lu, Jinhua
AU - Zhang, Leilei
AU - Li, Wei
AU - Fu, Qiangang
AU - Li, Kezhi
AU - Song, Qiang
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/5/1
Y1 - 2020/5/1
N2 - Ultralight, flexible and high-performance electromagnetic-interference (EMI) shielding performance materials are urgently required in the areas of aircraft/aerospace, portable and wearable smart electronics. Benefiting from the outstanding properties of graphene and the unique architectures, 3D assembled graphene structures have been widely applied in the field of EMI-shielding. Herein, for the first time, using Si3N4 nanowires as self-sacrificial templates with the thermal decomposition characteristics, 3D graphene microtubes (3DGMTs) membrane is fabricated by plasma enhanced chemical vapor deposition (PECVD) method, exhibiting the characteristics of free-standing and flexibility. 3DGMTs membrane assembled with silicon carbide (SiC) nanocrystals decorated edge-rich vertical graphene nanosheets (VGNs) exhibits superb EMI shielding effectiveness (SE) of around 38 dB in the frequency range of 8.2~12.4 GHz at a density of 0.0036 g cm−3 and a thickness of 1.5 mm. Considering the ultralow density and thickness, 3DGMTs membrane shows a high specific SE (SSE, defined as SE divided by mass density) of 10,556 dB cm3 g−1 in X-band, which far surpasses that of almost all the reported materials. Remarkably, our work not only provides a new idea for preparation of hollow tubular carbon materials for a wide range of applications, but also presents some fundamental insights for edge-rich VGNs applied in EMI shielding.
AB - Ultralight, flexible and high-performance electromagnetic-interference (EMI) shielding performance materials are urgently required in the areas of aircraft/aerospace, portable and wearable smart electronics. Benefiting from the outstanding properties of graphene and the unique architectures, 3D assembled graphene structures have been widely applied in the field of EMI-shielding. Herein, for the first time, using Si3N4 nanowires as self-sacrificial templates with the thermal decomposition characteristics, 3D graphene microtubes (3DGMTs) membrane is fabricated by plasma enhanced chemical vapor deposition (PECVD) method, exhibiting the characteristics of free-standing and flexibility. 3DGMTs membrane assembled with silicon carbide (SiC) nanocrystals decorated edge-rich vertical graphene nanosheets (VGNs) exhibits superb EMI shielding effectiveness (SE) of around 38 dB in the frequency range of 8.2~12.4 GHz at a density of 0.0036 g cm−3 and a thickness of 1.5 mm. Considering the ultralow density and thickness, 3DGMTs membrane shows a high specific SE (SSE, defined as SE divided by mass density) of 10,556 dB cm3 g−1 in X-band, which far surpasses that of almost all the reported materials. Remarkably, our work not only provides a new idea for preparation of hollow tubular carbon materials for a wide range of applications, but also presents some fundamental insights for edge-rich VGNs applied in EMI shielding.
KW - 3D graphene microtubes
KW - Edge-rich vertical graphene nanosheets
KW - Electromagnetic interference shielding
KW - Flexible
KW - Lightweight
KW - SiN nanowires
UR - http://www.scopus.com/inward/record.url?scp=85078036100&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2020.124025
DO - 10.1016/j.cej.2020.124025
M3 - 文章
AN - SCOPUS:85078036100
SN - 1385-8947
VL - 387
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 124025
ER -