Journal
ACS NANO
Volume 16, Issue 10, Pages 16996-17007Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.2c07111
Keywords
EMI shielding; transparent wood; MXene sheet; silver nanowire; mechanical performance
Categories
Funding
- National Key Research and Development Program of China [2019YFE0121700]
- National Key Scientific Instrument and Equipment Development Project of China [51927802]
- Fundamental Research Funds for the Provincial Universities of Zhejiang [GK219909299001-003]
- Zhejiang Provincial Key Research and Development Program [2021C01033, 2019C01121]
- National Natural Science Foundation of China [U1908220]
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In this study, a sandwich composite was constructed by coating the core material of transparent wood with silver nanowire@MXene, which achieved high-performance EMI shielding while maintaining high transparency and flexibility. The composite exhibited high EMI shielding effectiveness in the X-band and large-scale production feasibility, providing inspiration for the development of advanced EMI shielding materials for wide applications.
Electromagnetic interference (EMI) shielding materials have attracted intensive attention with the increased electromagnetic pollution, which are required to possess high transparency and flexibility for applications in visualization windows, aerospace equipment, and wearable devices. However, it remains a challenge to achieve high-performance EMI shielding while maintaining excellent light transmittance. Herein, a sandwich composite is constructed by coating the core material of transparent wood (TW) with silver nanowire (AgNW)@MXene, exhibiting a maximum transmittance of 28.8% in the visible range and a longitudinal tensile strength of 47.8 MPa. The average EMI shielding effectiveness can reach up to 44.0 dB under X-band (8-12.4 GHz), ascribed to the increased absorption shielding induced by the multireflection of electromagnetic waves within microchannels of the TW layer and the interfacial polarization between AgNW and MXene. Simultaneously, large-scale EMI shielding films can be conveniently produced by our proposed method, which provides inspiration for the development of advanced EMI shielding materials for wide applications.
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