SWCNT-modulated folding-resistant sandwich-structured graphene film for high-performance electromagnetic interference shielding. (June 2020)

• Record Type: Journal Article
• Authors: Fu, Huili; Yang, Zhengpeng; Zhang, Yongyi; Zhu, Meng; Jia, Yuanheng; Chao, Zhuo; Hu, Dongmei; Li, Qingwen
• Is Part Of: Carbon. Volume 162(2020)
• Page Start: 490
• Page End: 496
• Publication Date: 2020-06
• Subjects: Graphene film -- Single-walled carbon nanotube -- Porous layered structure -- Folding resistance -- Electromagnetic interference shielding; Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2020.02.081
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Macro-assembled carbon-based materials have demonstrated great potential for high-performance electromagnetic interference (EMI) shielding. However, how to enable a combined feature of superior foldability and high-efficiency shielding, which is crucial for the high-performance realization, still remains challenging. Here, an effective and facile strategy to solve the problem was proposed by developing a lightweight single-walled carbon nanotubes (SWCNTs)/graphene film (SGF) with an interconnected porous layered sandwich structure, via welding SWCNTs between graphene layers as the skeleton. The special structure endowed SGF with a prominent folding-resistant performance under repeated folding over 1000 times, without any remarkable variation in structure, and mechanical and electrical properties. Simultaneously, an outstanding EMI shielding effectiveness of ca. 80 dB was achieved for the resultant SGF owing to the high conductivity of SWCNTs and graphene network, as well as multi-reflections built up in the interlayers of SGF. This study provides useful guidelines for the designing and fabrication of carbon-based EMI shielding materials with high folding and shielding properties toward future uses. Graphical abstract: Lightweight SWCNTs/graphene films (SGFs) with an interconnected porous layered sandwich structure, which are fabricated by welding SWCNTs between graphene layers as the skeleton via an effective and facile strategy, show prominent folding-resistant and EMI shielding performance. Image 1