Waste cotton Fabric/MXene composite aerogel with heat generation and insulation for efficient electromagnetic interference shielding

Electromagnetic interference (EMI) shielding materials have become more and more indispensable due to serious electromagnetic-radiation pollution. Herein, waste cotton cellulose aerogels were prepared by dissolving waste cotton fabrics (WCF) in NaOH/urea aqueous solution, and MXene nanosheets were s...

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Bibliographic Details
Published in:Ceramics international 2022-05, Vol.48 (10), p.13464-13474
Main Authors: Zhai, Jianyu, Cui, Ce, Li, Ang, Guo, Ronghui, Cheng, Cheng, Ren, Erhui, Xiao, Hongyan, Zhou, Mi, Zhang, Jinwei
Format: Article
Language:English
Subjects:
Aerogel
Electromagnetic interference
Multifunctional
MXene
Shielding
Waste cotton
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Summary:Electromagnetic interference (EMI) shielding materials have become more and more indispensable due to serious electromagnetic-radiation pollution. Herein, waste cotton cellulose aerogels were prepared by dissolving waste cotton fabrics (WCF) in NaOH/urea aqueous solution, and MXene nanosheets were subsequently deposited on the cellulose aerogels by a facile dip coating method to obtain WCF/MXene composite aerogels. The WCF/MXene composite aerogels with highly porous network structure show remarkable electrical conductivity (8.2 Ω/sq of surface resistance), high EMI shielding effectiveness (EMI SE) in the range of 2–18 GHz (39.3–48.1 dB). The WCF/MXene aerogel possesses high SSE and SSE/t of 677.94–829.74 dB cm3 g−1 and 3512.62–4299.17 dB cm2 g−1, respectively (2–18 GHz). In addition, the heating temperature of WCF/MXene composite aerogels reaches 199 °C when 3 V positive voltage is applied on them. The WCF/MXene composite aerogels possess excellent electromagnetic shielding effectiveness, heat generation property and insulation, which can be potentially used as multifunctional materials for EMI shielding, electrical-heating and high temperature protection.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2022.01.224