Stretchable and Self‐Healable Organohydrogel as Electronic Skin with Low‐Temperature Tolerance and Multiple Stimuli Responsiveness

Abstract

Abstract The design and fabrication of electronic skin that mimics the human somatosensory system has attracted a great deal of attention. However, existing materials could hardly achieve the unique characteristics that natural skin possesses, including excellent mechanical flexibility, self‐healing ability, the sensory ability of tension, pressure, temperature, humidity, and the ability to secrete sweat through various sensory receptors and nervous pathways. In this paper, a new type of stretchable (over 2150%), tough (over 4 MJ m −3 ), conductive (up to 1.68 S m −1 ), and self‐healable (self‐healing efficiency up to 100%) organohydrogel with low‐temperature tolerance (stretchable below −50 °C) and multiple stimuli responsiveness is prepared by a simple “one‐pot” strategy at room temperature. The synthesized electronic skin with this organohydrogel can detect slight changes in tension, pressure, temperature, and humidity, and even distinguish between saline and alkaline solutions, showing high sensitivity in the broad strain window. This organohydrogel also has application prospects in humanoid robotics, flexible energy storage technologies, and health‐monitoring devices.