| 초록 |
All-in-one electrochromic supercapacitors (ECSs) based on a single electrochromic (EC) gel layer are attractive owing to their simplicity and capacitive and EC dual-function. In this study, the diffusion-controlled principle of the all-in-one ECSs is elucidated. The charging-discharging of ECSs based on conventional ion gels are incomplete due to the slow responses arising from the delayed mass transport of redox materials through diffusion. Therefore, we propose the use of ternary gel electrolytes (TGEs) containing organic molecules to reduce the viscosity and enlarge the free volume in the gel. A sufficient redox species can participate in charging-discharging when the all-in-one ECSs are fabricated with highly conductive and elastic TGEs, resulting in a 3.3-times higher capacity than those based on typical ion gels. Moreover, the TGE-based devices overcome the trade-off between transmittance contrast and response time, leading to superb performance. |
