Hybrid Hydrogen Bonding Strategy to Construct Instantaneous Self‐Healing Highly Elastic Ionohydrogel for Multi‐Functional Electronics

• DOI: 10.1002/smll.202400912
• Publication Date: 2024-03-26T13:21:01Z
• Authors: Hongfei Huang; Lijie Sun; Luzhi Zhang; Yalin Zhang; Youwei Zhang; Shunan Zhao; Shijia Gu; Wei Sun; Zhengwei You
• Keywords: Flexible Electronics; Wearable Technology

Gels show great promise for applications in wearable electronics, biomedical devices, and energy storage systems due to their exceptional stretchability adjustable electrical conductivity. However, the challenge lies integrating multiple functions like elasticity, instantaneous self-healing, a wide operating temperature range into single gel. To address this issue, hybrid hydrogen bonding strategy construct gel with these desirable properties is proposed. The intricate network of strong weak bonds within polymer matrix enables ionohydrogel exhibit remarkable stretching up five times original length seconds. Leveraging properties, incorporation ionic liquids, water, zinc salts bond crosslinked conductivity redox reaction, making it versatile skin real-time monitoring human movements respiratory. Moreover, can be used as electrolyte assembly zinc-ion battery, ensuring reliable power supply even extreme conditions (-20 °C deformations). This simplifies diverse structural requirements gels meet needs various electronic applications, offering new approach multi-functional electronics.