Robust Ionogels with Slide-Ring Structure for Wearable Piezoionic Sensors

Inspired by intercellular communication, ion-based artificial systems have been developed. Among them, piezoionic technology is based on ion migration to achieve energy conversion and has potential in the application of flexible sensors. However, the low signal output hinders its further development. Here, we achieve amplification of the sensing signal through the rational design of ionogel with a slide-ring structure. With the increase of ring number, the signal gets eight times improvement. In addition, the ionogel synthesis is simple and environmentally friendly. The piezoionic sensor has been integrated into wristbands and masks for wearable application.