Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei 230026, China.
Nano Lett. 2021 Mar 24;21(6):2532-2537. doi: 10.1021/acs.nanolett.0c05081. Epub 2021 Mar 8.
Electromagnetic interference (EMI) shielding materials with excellent EMI shielding efficiency (SE), lightweight property, and superb mechanical performance are vitally important for modern society, but it is still a challenge to realize these performances simultaneously on one material. Here, we report a sustainable bioinspired double-network structural material with excellent specific strength (146 MPa g cm) and remarkable EMI SE (100 dB) from cellulose nanofiber (CNF) and carbon nanotubes (CNTs), which demonstrates remarkable and outstanding performance to both typical metal materials and reported polymer composites. In particular, the bioinspired double-network structure design simultaneously achieves an extremely high electrical conductivity and mechanical strength, which makes it a lightweight, high shielding efficiency, and sustainable structural material for real-life electromagnetic wave shielding applications.
电磁干扰 (EMI) 屏蔽材料具有优异的 EMI 屏蔽效率 (SE)、轻巧的特性和卓越的机械性能，对现代社会至关重要，但要在一种材料上同时实现这些性能仍然是一个挑战。在这里，我们报告了一种可持续的仿生双网络结构材料，该材料由纤维素纳米纤维 (CNF) 和碳纳米管 (CNTs) 组成，具有优异的比强度 (146 MPa g cm) 和显著的 EMI SE (100 dB)，其性能明显优于典型的金属材料和报道的聚合物复合材料。特别是，仿生双网络结构设计同时实现了极高的电导率和机械强度，使其成为一种用于实际电磁波屏蔽应用的轻质、高屏蔽效率和可持续的结构材料。
