Environment‐Tolerant Conductive Eutectogels for Multifunctional Sensing

Conductive hydrogels have shown significant potential in the realm of flexible electronics; however, using water as a solvent introduces problems such as low-temperature freezing and water loss. One possible solution to address these limitations is replacing water with deep eutectic solvents (DES). In this study, the PHEAA-gelatin-MXene (PGM) eutectogels are constructed with poly(N-hydroxyethyl acrylamide) (PHEAA) and gelatin as the main components, and MXene nanosheets are added as nanofillers. The PGM eutectogels exhibit exceptional tensile and compressive mechanical properties, including remarkable stretchability (940%), high strength (0.5 MPa), high toughness (1.39 MJ m-3), and impressive compressive strength (0.3 MPa at 80% strain). Additionally, the PGM eutectogels demonstrate excellent adhesion, anti-freezing, and long-term anti-drying abilities. Moreover, the PGM eutectogels multifunctional sensors allow high sensitivity, which enables accurate real-time and stable monitoring of human activities over a wide temperature range. Consequently, the PGM eutectogels hold great potential as candidates in fields such as flexible wearable devices, personal healthcare, and human-machine interfaces. PGM eutectogels exhibit exceptional tensile and compressive mechanical properties, excellent adhesion, anti-freezing, and long-term anti-drying abilities. Moreover, the PGM eutectogels multifunctional sensors allow high sensitivity, which enables accurate real-time and stable monitoring of human activities over a wide temperature range. Consequently, the PGM eutectogels hold great potential as a candidate in fields such as flexible wearable devices, personal healthcare, and human-machine interfaces. image