Demonstration of a Gel-Polymer Electrolyte-Based Electrochromic Device Outperforming Its Solution-Type Counterpart in All Merits: Architectural Benefits of CeO2 Quantum Dot and Nanorods

• DOI: 10.1021/acsami.3c16506
• Publication Date: 2024-01-19T17:13:05Z
• Authors: Gaurav Kumar Silori; Subashchandrabose...; Kuo-Chuan Ho
• Keywords: Nanorod; Electrochromic devices

For years, solution-type electrochromic devices (ECDs) have intrigued researchers' interest and eventually rendered themselves into commercialization. Regrettably, challenges such as electrolyte leakage, high flammability, complicated edge-encapsulation processes limit their practical utilization, hence necessitating an efficient alternate. In this quest, although the concept of solid/gel-polymer (SPE/GPE)-based ECDs settled some issues ECDs, array problems like operating voltage, sluggish response time, poor cycling stability paralyzed commercial applicability. Herein, we demonstrate a choreographed-CeO2-nanofiller-doped GPE-based ECD outperforming its counterpart in all merits. The filler-incorporated polymer assembly was meticulously weaved through electrospinning method, resultant host employed for immobilizing viologen species. filler engineering benefits conceived tuned shape CeO2 nanorod quantum dots, along with excellent redox shuttling effect Ce3+/Ce4+, synchronously yielded outstanding class GPE, which upon utilization delivered impressive properties. A combination features possessed by particular device (QD-NR/PVDF-HFP/IL/BzV-Fc ECD) exceptionally low driving voltage (0.9 V), transmittance change (ΔT, ∼69%), fast time (∼1.8 s), coloration efficiency (∼339 cm2/C), remarkable (∼90% ΔT-retention after 25,000 cycles) showcased striking potential yet-to-realize market ECDs. This study unveils untapped choreographed nanofillers that can promisingly drive to doorstep