Multifunctional Electromagnetic Interference Shielding Ternary Alloy (Ni-W-P) Decorated Fabric with Wide-Operating-Range Joule Heating Performances

Flexible electromagnetic interference (EMI) shielding textiles with wide-operating-range Joule heating performances are urgently indispensable in the application of artificial intelligence, communication industry, and wearable electronics. Herein, a simple and cost-effective approach is proposed to construct multifunctional textiles by electroless depositing a nickel-tungsten-phosphorus (Ni-W-P) ternary alloy on a polyamide (PA) fabric. The resultant fabric with a thickness of similar to 117 mu m exhibits a favorable EMI shielding effectiveness (SE) of 43.6 dB within 2-12.5 GHz. Particularly, finite difference time domain (FDTD) simulation was introduced to investigate the effects of the PA fabric mesh number and Ni-W ratio on the EMI SE value, which was validated by experimental results. In addition, the conductive fabric demonstrates excellent heating efficiency (up to 140 degrees C under 2 V within 60 s), a wide operating range (from 40 to 140 degrees C), and simultaneously, satisfactory reproducibility by undergoing dozens of heating and cooling cycles. Notably, EMI SE of the multifunctional fabric remains unchanged even after a series of durability measurements including 180 degrees C heating, ultrasonication treatment, and repetitive peeling tests, respectively. Therefore, the prepared Ni-W-P coated PA fabric with prominent chemical stability and mechanical robustness endows enormous potential in multi-scene applications.