Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 42, Pages 48016-48026Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c15134
Keywords
tungsten alloy; polyamides; electromagnetic interference effectiveness; numerical simulation; Joule heating; durability
Funding
- National Natural Science Foundation of China [U1830108]
- Innovation Foundation of Shanghai Aerospace Science and Technology [SAST2018-061]
- Yanchang Petroleum (Group)-Fudan University
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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.
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