Electrospun TaC/Fe3C-Fe carbon composite fabrics for high efficiency of electromagnetic interference shielding

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/Fe3C-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.

Automated summary

In this study, carbon composite fabrics of TaC/Fe3C-Fe were fabricated using electrospinning technology and high temperature pyrolysis. The materials showed low density, excellent electrical conductivity, and good saturation magnetization. The optimum mass ratio of Ta and Fe was determined to achieve the maximum EMI shielding performance. The material has potential commercial applications.