Ionogels are crosslinked networks—typically polymeric networks—swollen with ionic liquids. The unique properties of ionogels, such as nonvolatility, ionic conductivity, nonflammability, and high thermal and electrochemical stability, make them promising for a variety of applications. Examples include sensors, adhesives, energy storage devices, and ionotronics. While many ionogels require complex syntheses and suffer from poor mechanical properties, simpler strategies are emerging to produce tough ionogels, thereby improving the durability, enabling 3D printing, and broadening the application space of ionogels. This perspective highlights promising applications and future opportunities of ionogels.

离子凝胶是用离子液体溶胀的交联网络——通常是聚合物网络。离子凝胶的独特性能，例如不挥发性、离子电导率、不可燃性以及高热稳定性和电化学稳定性，使其具有多种应用前景。例子包括传感器、粘合剂、能量存储设备和离子电子学。虽然许多离子凝胶需要复杂的合成并且机械性能较差，但更简单的策略正在出现，以生产坚韧的离子凝胶，从而提高耐久性，实现 3D 打印，并拓宽离子凝胶的应用空间。这一观点凸显了离子凝胶的广阔应用前景和未来机遇。