Novel Electrolyte Design for High Performance WO₃ Based Electrochromic Devices: A Comparative Study with Ionic Liquids
발표자
하늘겸 (한국과학기술원)
연구책임자
문홍철 (한국과학기술원)
초록
내용
Electrochromic(EC) devices offer low energy consumption, high optical modulation and simple structure, making them attractive for applications ranging from smart windows and displays to energy storage. Among these, WO₃‑based EC systems are widely used thanks to their excellent electrochemical properties, high optical modulation and superior coloration efficiency. WO₃ undergoes redox reactions via Li⁺ intercalation/deintercalation, so selecting a suitable electrolyte is critical. Although ionic‑liquid‑based electrolytes—valued for their non‑volatility and high ionic conductivity—are commonly employed, their multicationic nature makes them less ideal for WO₃ systems. Here, we introduce a novel electrolyte and perform a comprehensive comparative analysis against conventional ionic liquids, ultimately developing a high‑performance WO₃‑based EC device. This work provides valuable guidance for the design of advanced electrolytes in future EC platforms.