Ionic liquid-functionalized reduced graphene oxide–aramid nanofiber composite films for enhanced thermal conductivity, electromagnetic interference shielding, and mechanical properties

at a thickness of 30 μm, representing improvements of 45.8% and 54.7%, respectively, compared to the rGO/ANF composite film. Furthermore, the composite film exhibited excellent mechanical properties with a tensile strength of 237 MPa and a Young's modulus of 9.92 GPa corresponding to enhancements of 196.3% and 18.24%, respectively, compared to the rGO/ANF composite film. The rGO@IL/ANF composite film also exhibited long-term performance stability under harsh environmental conditions. This study highlights that IL-functionalized rGO can serve as a practical solution for fabricating high-performance composites in flexible electronic applications.