MXene-decorated carbonized jute composite for high-performance electromagnetic interference shielding
Yanli Sun, Bo Li, Huafu Zheng, Kai Rong, Wei Fan, Danyang Li
Abstract
Lightweight, good processability and efficient electromagnetic interference (EMI) shielding materials have captured more interest with the recognition of electromagnetic pollution hazards. Biomass-based carbon has been considered as a promising EMI shielding due to its low cost, renewability and environmental friendliness. Here, we used jute felt as the precursor of biomass carbon to fabricate the MXene (Ti3C2Tx)/jute composite (MXene/CJ) via a simple carbonization process and dip-and-dry method. Higher carbonization temperature and more MXene loading are conducive to electrical conductivity and shielding effectiveness (SE). When the carbonization temperature was 900 °C and dip-and-dry times was 3, the average EMI SE of 59.08 dB was achieved in 8.2–12.4 GHz (X-band) with a reflection-dominated mechanism. Besides, the composite also exhibits the potential to be used as a strain sensor. Under small pressure, the composite possessed excellent sensitivity and response time. The wrist bending, swallowing and vocal cord vibration can be monitored in real-time. These results illustrate that the MXene/CJ composite has a broad prospect in the EMI shielding and wearable electronics fields. This work also provided a feasible approach for the high-value utilization of natural biomass resources.