Lignin Nanosphere‐Modified MXene Activated‐Rapid Gelation of Mechanically Robust, Environmental Adaptive, Highly Conductive Hydrogel for Wearable Sensors Application

• DOI: 10.1002/adfm.202409855
• Publication Date: 2024-07-22T09:08:45Z
• Authors: Zi‐Fan Zeng; Yu‐Qin Yang; Xiao‐Wen Pang; Baiyu Jiang; Li‐Xiu Gong; Zonglin Liu; Li Peng; Shi‐Neng Li
• Keywords: Wearable Technology

Abstract Advanced conductive hydrogels demonstrate substantial potential for wearable devices. Nevertheless, the transformative advance in soft electronics raises harsh requirements on hydrogel candidates, such as rapid and on‐site fabrication, mechanical flexibility, high sensitivity, wide use temperature. Here, this problem is overcome by incorporating a dual catalytic system based lignin‐modified MXene‐Fe 3+ into commercial hydrogels. This 1) can form composite time scale of min at ambient condition without supply external energy, 2) incorporates multiple enhanced strategies polymer chains, 3) constructs well‐organized hybrid network. The fabricated displays an improved balanced overall performance, including ductility (2139%), moderate electrical conductivity, strong temperature tolerance (−70–50 °C). Combined with great merits above hydrogel‐based sensor good sensing (maximum GF: 2.8), stable repeatability (200% 200 cycles), work window 0%–947%, thereby disclosing promising application physiological movements, motion recognition breathing state detection. Sensationally, even complex or surroundings, sensors also produce reliable signal output. Together, strategy provides new mentality designing materials booming advanced electronics.