| 초록 |
Dual-function electrochromic supercapacitors (ECSs) indicating their real-time charge capacity in color were fabricated using tungsten trioxide (WO3) and Li-doped ion gels containing hydroquinone (HQ). The ECSs in this work can simultaneously serve as either electrochromic devices (ECDs) or supercapacitors, so the coloration/bleaching and charging/discharging characteristics were investigated between 0 and –1.5 V. At the optimal HQ concentration, a large transmittance contrast, high coloration efficiency, high areal capacitance, and good charging/discharging cyclic stability were achieved. By exploiting the elastic characteristics of the gel electrolytes, flexible ECSs were also fabricated on plastic substrates and exhibited good bending durability. Moreover, the practical feasibility was evaluated by demonstrating the use of the ECSs as an energy storage device and a power source. |
