Porous and Ultra-Flexible Crosslinked MXene/Polyimide Composites for Multifunctional Electromagnetic Interference Shielding.

ABSTRACT: Lightweight, ultra-flexible, and robust crosslinked transition metal carbide (Ti₃C₂ MXene) coated polyimide (PI) (C-MXene@PI) porous composites are manufactured via a scalable dip-coating followed by chemical crosslinking approach. In addition to the hydrophobicity, anti-oxidation and extreme-temperature stability, efficient utilization of the intrinsic conductivity of MXene, the interfacial polarization between MXene and PI, and the micrometer-sized pores of the composite foams are achieved. Consequently, the composites show a satisfactory X-band electromagnetic interference (EMI) shielding effectiveness of 22.5 to 62.5 dB at a density of 28.7 to 48.7 mg cm^-3, leading to an excellent surface-specific SE of 21,317 dB cm² g^-1. Moreover,

SUBMITTER: Zeng ZH 

PROVIDER: S-EPMC8828842 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature