文章主要内容:A high-performance ion gel composed of poly(ethyl acrylate-co-acrylic acid-co-sodium acrylate) (P(EA-co-AA-co-AANa)) with a high ionic liquid content was successfully fabricated through a simple solution-casting method. It exhibits excellent mechanical strength owing to the various non-covalent interactions between the polymer chains and the entropic elasticity of the highly entangled polymer networks. By adjusting the polymer composition, the ion gel film can achieve a tensile strain exceeding 6000% or a tensile stress exceeding 2.5 MPa. This ion gel also has the advantages of excellent thermal stability, good transparency, high ionic conductivity, and wide electrochemical window. More importantly, the polymer P(EA-co-AAco-AANa) is easy to synthesize, the monomer is cheap, and the gel preparation is simple, making it possible to realize largescale production for broad applications in the fields of motion sensors, gel electrolytes, and flexible displays.