Composite materials based on dual network cross‐linking for flexible sensors

Abstract The further development of flexible ionic materials is limited by the evaporation or leakage of their internal liquid state. This article presents a composite flexible ionic material with no internal liquid, which forms a double crosslinked network through hydrogen bonding and lithium bonding, avoiding leakage and evaporation. Composite flexible ionic materials exhibit excellent conductivity, mechanical properties, and transparency. The synergistic effect of hydrogen bonding and lithium bonding endows composite flexible ionic materials with rapid self‐healing properties. On this basis, a resistive flexible sensor based on composite flexible ion materials was further developed. It has broad application prospects in human‐computer interaction, electronic skin, and medical health fields.