High Conductive, Adhesive, Flexible Dual-cured Hybrid Ion-gel Polymer Electrolyte for Self-powered Energy Storage Device to Apply on Electric Vehicles

To adress the demanding issues of achieving both high mechanical strength and stability, a solid-state electrolyte (SSE) is one of the promising strategies of next-generation electrolyte systems. This approach has attracted significant attention due to rigid mechanical strength and stability under various environmental conditions. However, a relatively low ionic conductivity ( < 10^-5 S cm^-1) of SSE, compared to a liquid electrolyte, cannot be suited for actual applications on high-performance energy storage devices. Concerning the trade-off relationship between conductivity and mechanical properties, Ionic-gel polymer electrolytes (IGPE) have been spotlighted as a useful strategy to achieve high ionic conductivity and robust stability. hybrid IGPEs which adopted dual-curing process of thermal and UV treatments can achieve highest ionic conductivity (~5 mS cm^-1), ultra-stable flexibility, and even strong adhesion to the substrates. Furthermore, microsupercapacitors based on hybrid IGPEs show multifunctional advantages for higher energy and power densities (~10¹ µWh cm^-2 and ~10¹ mW cm^-2) with higher flexible-adhesive properties. Therefore, all the results can provide useful insights to fabricate self-powered energy storage devices to apply on electric vehicles which require high adhesion strength, stability, and high energy density.