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Superhigh Electromagnetic Interference Shielding of Ultrathin Aligned Pristine Graphene Nanosheets Film
Wei, Qinwei; Pei, Songfeng; Qian, Xitang; Liu, Haopeng; Liu, Zhibo; Zhang, Weimin; Zhou, Tianya; Zhang, Zhangcai; Zhang, Xuefeng; Cheng, Hui-Ming; Ren, Wencai
2020-04-01
Source PublicationADVANCED MATERIALS
Volume32Issue:14
AbstractUltrathin, lightweight, high-strength, and thermally conductive electromagnetic interference (EMI) shielding materials with high shielding effectiveness (SE) are highly desired for next-generation portable and wearable electronics. Pristine graphene (PG) has a great potential to meet all the above requirements, but the poor processability of PG nanosheets hinders its applications. Here, efficient synthesis of highly aligned laminated PG films and nacre-like PG/polymer composites with a superhigh PG loading up to 90 wt% by a scanning centrifugal casting method is reported. Due to the PG-nanosheets-alignment-induced high electrical conductivity and multiple internal reflections, such films show superhigh EMI SE comparable to the reported best synthetic material, MXene films, at an ultralow thickness. An EMI SE of 93 dB is obtained for the PG film at a thickness of approximate to 100 mu m, and 63 dB is achieved for the PG/polyimide composite film at a thickness of approximate to 60 mu m. Furthermore, such PG-nanosheets-based films show much higher mechanical strength (up to 145 MPa) and thermal conductivity (up to 190 W m(-1) K-1) than those of their MXene counterparts. These excellent comprehensive properties, along with ease of mass production, pave the way for practical applications of PG nanosheets in EMI shielding.
DOI10.1002/adma.201907411
WOS IDWOS:000515170200001
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/83111
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Wei, Qinwei,Pei, Songfeng,Qian, Xitang,et al. Superhigh Electromagnetic Interference Shielding of Ultrathin Aligned Pristine Graphene Nanosheets Film[J]. ADVANCED MATERIALS,2020,32(14).
APA Wei, Qinwei.,Pei, Songfeng.,Qian, Xitang.,Liu, Haopeng.,Liu, Zhibo.,...&Ren, Wencai.(2020).Superhigh Electromagnetic Interference Shielding of Ultrathin Aligned Pristine Graphene Nanosheets Film.ADVANCED MATERIALS,32(14).
MLA Wei, Qinwei,et al."Superhigh Electromagnetic Interference Shielding of Ultrathin Aligned Pristine Graphene Nanosheets Film".ADVANCED MATERIALS 32.14(2020).
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