| 초록 |
With the great attention in wearable and flexible devices, ion gels are promising soft solid electrolyte candidates due to their high ionic conductivity, stretchability, non-flammability, and high potential stability window. Various methods of solidifying ionic liquids by constructing 3-Dimensional polymer networks have been suggested. We utilize the phase separation of semicrystalline homopolymer in ionic liquid to fabricate physically crosslinked solid-state ion gels. The phase-separated crystal domains serve as network junctions of the ion gel, which are connected by amorphous chains dissolved in the ionic liquid. The resulting stretchable and highly conductive ion gels showed high ionic conductivity value over 10 mS/cm and superior mechanical properties including high strain at break over 1000%. These results provide a new pathway for solidifying ionic liquids for a variety of electrochemical device applications. |
