Electrically Conductive Hydrogels for Flexible Wearable Devices: Materials, Design, and Applications

Abstract Electrically conductive hydrogels represent promising candidates for next‐generation wearable sensors owing to their tunable conductive networks, biomimetic interfacial properties, and exceptional environmental adaptability. Recent studies have demonstrated their successful implementation in physiological signal monitoring, medical rehabilitation assessment, and human‐computer interaction. With advancements in 3D printing technologies and wireless transmission integration, these materials show potential for expansion into emerging fields such as personalized medicine, sports science, and intelligent interactive systems. This review examines the classification and synthesis strategies of electrically conductive hydrogels, highlights their applications in wearable devices, and discusses current technical challenges. By synthesizing recent progress, this work aims to provide a foundation for advancing next‐generation innovations in hydrogel‐based wearable technologies.