Graphene/SiC-coated textiles with excellent electromagnetic interference shielding, Joule heating, high-temperature resistance, and pressure-sensing performances
Chongjie Wang, Qingfang Xu, Jinrong Hu, Pengjian Lu, Han Wu, Bingjian Guo, Rong Tu, Kai Liu, Meijun Yang, Song Zhang, Baowen Li, Chuanbin Wang, Lianmeng Zhang
Abstract
Multifunctional, wearable, and durable textiles integrated with smart electronics have attracted tremendous attention. However, it remains a great challenge to balance new functionalities with high temperature stability. Herein, textile-based pressure-sensors with excellent electromagnetic interference (EMI) shielding, Joule heating and high temperature resistance were fabricated by constructing graphene/SiC (G/SiC) heterostructures on carbon cloth via laser chemical vapor deposition (LCVD). The resultant textile exhibited excellent EMI efficiency of 74.2 dB with a thickness of 0.45 mm, Joule heating performance within low working voltage range of 1 to 3 V and fast response time within 20 s. These properties arose from multiple reflections, interfacial polarizations and high conductivity due to the numerous amounts of nanoscale G/SiC heterostructures. More importantly, the G/SiC/CFs demonstrated well high temperature resistance with a <em>T</em><sub>HRI</sub> of 380.16 <sup>o</sup>C owing to the protection of the coating layer on the carbon fibers upon oxidation. Meanwhile, the G/SiC/CFs presented good pressure-sensing performance with a high sensitivity of 52.93 kPa<sup>−1</sup>, fast response time of 85 ms and wide pressure range up to 186 kPa. These features imply the potential of G/SiC/CFs as an efficient EMI shielding, electrical heater and piezoresistive sensor textiles.