Insulating and flexible electromagnetic-shielding nanofiber composite film for direct wrapping on electronics even in harsh conditions
Year: 2025
Type: article
Abstract: Current electromagnetic interference (EMI) shielding materials mainly depends on electrical conductivity, it still remains great challenges to avoid short-circuit risks and assemble into macroscopic films with strong mechanical strength. To address these problems, we rationally design and prepare a multilayer-structured EMI shielding nanocomposite film (P-Co-MX), where MOF-derived porous Co–C as the magnetic layer and MXene as the conductive layer are sandwiched between two poly(m-phenylene isophthalamide) (PMIA) nanofiber membranes, with the PMIA membranes as insulating and protection layers. Benefiting from the rational design of multi-layer structure, P-Co-MX exhibits high EMI shielding effectiveness in X-band (8.2–12.4 GHz) with absorption-dominated EMI shielding feature. Owing to the protection of PMIA nanofiber layers, P-Co-MX shows high resistivity, excellent flexibility and stable EMI shielding performance even in harsh conditions, including 200 ℃ high temperature, − 196 ℃ ultralow-temperature and corrosive conditions (pH = 3). These unique features allow for direct wrapping on the signal lines in highly miniaturized and flexible electronics to solve EMI issue.
Authors: Xueting Zhang, Xueting Zhang, Guoqiang Jin, Yan Liu, Yake Liu, Mingyan Zhang, Congju Li, Xiuling Zhang, Xiuling Zhang, Dapeng Cao
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,490
Awards: G5748161754, G8807085950
OpenAlex ID: W4408452759