Electrospun TaC/Fe3C–Fe carbon composite fabrics for high efficiency of electromagnetic interference shielding. (April 2022)

• Record Type: Journal Article
• Authors: Guo, Hongtao; Zheng, Minhui; Ma, Xiaofan; Cao, Runchi; Liu, Kunming; Yang, Weisen; Jian, Shaoju; Jiang, Shaohua; Duan, Gaigai
• Is Part Of: Composites communications. Volume 31(2022)
• Publication Date: 2022-04
• Subjects: Electrical properties -- Magnetic properties -- Electrospinning -- Electromagnetic interference shielding
• DOI: 10.1016/j.coco.2022.101130
• Languages: English
• ISSNs: 2452-2139

Abstract

Abstract: Electromagnetic (EM) waves usually interfere with the normal use of electric devices leading to the necessity of developing electromagnetic interference (EMI) shielding materials with light weight and strong reflection ability. Innovative carbon-based materials incorporated with conductive and magnetic fillers have aroused wide concern. Herein, we fabricated TaC/Fe3 C–Fe carbon composite fabrics via electrospinning technology and high-temperature pyrolysis, which exhibited low density (0.34 g cm -3 ), excellent electrical conductivity (15.4 S cm -1 ), and good saturation magnetization (13.3 emu g -1 ). By investigating the optimum mass ratio of Ta and Fe, the maximum EMI shielding performance of 46.4 dB could be achieved with a thickness of 0.18 mm. And the loss mechanism was mainly based on reflection. It is expected to become a potential EMI shielding material in some commercial applications. Graphical abstract: Image 1 Highlights: ∙ TaC/Fe3 C/C electrospun fabrics were prepared by electrospinning and pyrolysis. ∙TaC/Fe3 C/C electrospun fabrics possess excellent electrical and magnetic property. ∙TaC/Fe3 C/C electrospun fabrics exhibited EMI performance (8972.9 dB cm 2 g −1 ). ∙The demo proved that TaC/Fe3 C/C electrospun fabrics can shield EM Waves.