Fabrice Louche *, Alena Křivská, André Messiaen and Tom Wauters This work shows great potential for massive production of high-efficiency EMI shielding textiles for livelihood or military towards the next-generation wearable electronic technology. Practical demonstrations show that personal information in a mobile phone or ID card can be prevented from being read by pockets tailored from textiles. The textile with a small thickness of 1.4 mm achieves an EMI shielding effectiveness (SE) of 107 dB in 12–18 GHz, 3 fold exceeding the demand for commercial applications (>30 dB). Moreover, the low square resistance of the textile remains stable after immersion in extremely corrosive chemicals or 10000-times bending tests. The textile with desirable features is fabricated by the Ni-species catalyzed graphitization of cotton cellulose with large-scale production potential. Aided by finite element analysis (FEA) and computer simulation technology (CST) for performance screening in advance, the mechanically-favorable but EMI shielding-unfavorable pores intrinsically produced in interwoven textile call for a low square resistance of the whole textile. Herein, we report the fabrication of a tailorable textile with high flexibility and conductivity to address this challenge via a straightforward graphitization strategy based on a mild reduction procedure.
However, simultaneously featuring with good electrical conductivity and wearability of the derived waste textiles remains a daunting challenge, especially in the absence of conducting additives.
Developing easy-tailorable and high-efficient electromagnetic interference (EMI) shielding textile from waste textile is highly desirable to meet the demand for wearable electronics and economic sustainability for modern society.
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