Scalable, superelastic, and superhydrophobic MXene/silver nanowire/melamine hybrid sponges for high-performance electromagnetic interference shielding

Shijun Wang, Diansen Li*, Weijia Meng, Lei Jiang, Daining Fang

*Corresponding author for this work

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Abstract

Lightweight electromagnetic interference (EMI) shielding materials with a simple production process, a low density, good mechanical properties and stability, and a high absolute EMI shielding effectiveness (SSE/t) are urgently demanded for spacecraft, aircraft, and portable and wearable smart electronics, yet remain extremely challenging to manufacture. Herein, scalable, superelastic, and superhydrophobic MXene/silver nanowire/melamine (MS-MAF) hybrid sponges are fabricated via a facile dip-coating method. The MS-MAF hybrid sponge exhibits an ultralow density (11.98 mg cm−3), a large recoverable compression strain (80%), and fatigue resistance. By the rational design of two-dimensional MXene nanosheets and one-dimensional silver nanowires on the sponge skeleton, the MS-MAF hybrid sponge can achieve a high SSE/t of 10128 dB cm2 g−1, significantly surpassing that of most of the other porous EMI shielding materials ever reported. Due to the treatment of low surface energy coating, the MS-MAF hybrid sponge also shows excellent structural stability and superhydrophobicity, which is conducive to its application in complex practical environments. Consequently, this work offers a promising lightweight EMI shielding candidate with the features of large-scale production, superelasticity, superhydrophobicity and a high SSE/t.

Original languageEnglish
Pages (from-to)5336-5344
Number of pages9
JournalJournal of Materials Chemistry C
Volume10
Issue number13
DOIs
Publication statusPublished - 28 Feb 2022
Externally publishedYes

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Wang, S., Li, D., Meng, W., Jiang, L., & Fang, D. (2022). Scalable, superelastic, and superhydrophobic MXene/silver nanowire/melamine hybrid sponges for high-performance electromagnetic interference shielding. Journal of Materials Chemistry C, 10(13), 5336-5344. https://doi.org/10.1039/d2tc00516f