“…To overcome the disadvantage of hydrogels, ionogel materials based on ionic liquid (IL) have been developed recently, owing to the unique properties of IL, such as nonvolatility, a wide liquid temperature range, strong dissolving capacity, and excellent thermal stability. − Importantly, the ionogels have the advantages of a good ionic conductivity and wide electrochemical window from IL that other gels do not have, which can be used in some important fields, including energy storage and strain sensors. − However, some methods for preparing ionogel are not in situ, and the preparation process is too complicated (two steps or three steps), and lots of the stretchable ionogels need variety of monomers and cross-linkers, which greatly limits the development and application of the ionogels as strain sensors . On the other hand, the good designability of the anion–cation couple structure of the ILs makes the ionogel show tunable hydrophobicity and hydrophilicity with different polymers. − The obtained high performance stimuli-responsive ionogels with outstanding designability and tunable thermo-responsive behaviors can be applied in a wider field. − However, the reported thermo-responsive ionogels need complex monomers or a complex preparation process, especially when the strain is less than 300%. Therefore, it is urgent to develop simple an in situ preparation technology using a monomer with a simple structure to construct stable and highly stretchable thermo-responsive ionogel materials.…”