A stretchable fabric as strain sensor integrating electromagnetic shielding and electrochemical energy storage

Multifunctional intelligent fabric plays an integral role in health management, human-machine interaction, wireless energy storage and conversion, and many other artificial intelligence fields. Herein, we demonstrate a newly developed MXene/polyaniline (PANI) multifunctional fabric integrated with strain sensing, electrochemical energy storage, and electromagnetic shielding properties. The multifunctional fabric-based strain sensor possesses a real-time signal response at a sizeable tensile strain of 100% with a minute strain of 0.5%, maintaining a stable and consistent signal response even after 3000 stretch-release cycles. In addition, the multifunctional fabric exhibits excellent electromagnetic shielding capabilities, achieving a total shielding effectiveness value of up to 43 dB, and in the meantime shows attractive electrochemical energy storage performance as an electrode in a supercapacitor, offering a maximum specific capacity and energy density of 522.5 mF center dot cm-2 and 18.16 mu Wh center dot cm-2, respectively. Such a multifunctional intelligent fabric offers versatile opportunities to develop smart clothes for various artificial intelligent applications.