期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 36, 页码 40802-40814出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c11530
关键词
electromagnetic interference shielding; wood-derived carbon; porous architecture; hydrophobic; lightweight
资金
- National Natural Science Foundation of China [U1704253, U1908220]
- Zhejiang Provincial Natural Science Foundation of China [LR18E010001]
- Fundamental Research Funds for the Central Universities [N160208001]
Constructing multifunctional characteristics toward advanced electromagnetic interference shielding materials in harsh environments has become a development trend. Herein, the wood-derived magnetic porous carbon composites with a highly ordered anisotropic porous architecture were successfully fabricated through a pyrolysis procedure. The three-dimensional porous skeleton inherited from the wood stock serves as an electrically conductive network and incorporates magnetic Ni nanoparticles homogeneously and firmly embedded within the carbon matrix that can further improve the electromagnetic attenuation capacity. The optimized Ni/porous carbon (PC) composite exhibits an exceptional electromagnetic interference (EMI) shielding effectiveness of 50.8 dB at the whole X band (8.2-12.4 GHz) with a low thickness (2 mm) and an ultralow density (0.288 g/cm(3)) and simultaneously possesses an extraordinary compressive strength (11.7 MPa) and a hydrophobic water contact angle (152.1 degrees). Our study provides an alternative strategy to utilize green wood-based materials to design multifunctional EMI shielding composites.
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