Near-field and far-field EMI shielding response of lightweight and flexible MXene-decorated polyester textiles

The wide application of miniaturized electronics has given rise to new demands for electromagnetic protection, and electromagnetic interference (EMI) shielding materials have been attracted widespread attention. However, most studies focus on the far-field EMI shieling of material. Herein, a facile dip-coating strategy was developed to achieve MXene/WPU composite coated non-woven fabric (MW@NWF) with both excellent near-field and far-field EMI shielding performance. The MW@NWF shows flexible and strong characteristics, and good waterproof performance. The EMI shielding effectiveness (SE) is up to 55 dB with the MXene content of ∼11 wt%, and the near-field shielding performance is as high as about ∼ - 50 dB in the frequency of 1–9 GHz. Moreover, MW@NWF exhibits long-term structure and performance reliability after 500 cycles of bending-release. This study provides a facile and efficient way to achieve lightweight and flexible shielding materials with high-performance of both near-field and far-field EMI shielding.