An interfacial robust and entire self-healing ionogel-elastomer hybrid for elastic electronics enables discretionary assembly and reconfiguration

Inspired by the multi-layer architecture of mammal skins, interfacial robust, stretchable, and entirely healable gel-elastomer hybrids hold great potential in diverse fields including biomedical devices, wearable electrical devices, and soft robotics. However, existing gel-elastomer hybrids have numerous limitations including low interfacial bonding toughness, complex and time-consuming preparation process, unhealable, and non-reconfiguration. Herein, we propose a simple and general chemical strategy through the interfacial dynamic bonding between gel and elastomer to simultaneously address the abovementioned obstacles. Dynamic covalent bonds readily and repeatably covalent bonding ionogel and elastomer (interfacial toughness: 390 J m-2), endowed the hybrids with entire self-healing features like skin and enabled discretionary assembly and reconfiguration. Moreover, this strategy resolved the troublesome contradiction between interfacial stability and reconfiguration. Taking advantage of the aforementioned features, we readily constructed a multi-module, self-healing, self-powered, and realtime monitoring of personal status integrated elastic electronics, which could simply reconfigure the output signal of elastic electronics into an input signal of the devices-braille keyboard.