期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 4, 页码 5312-5318出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c19685
关键词
vanadium oxide; electrochromic; ion storage; charge balancing; minimally color changing
资金
- Ambilight Inc.
The development of a nanostructured, amorphous vanadium oxide (VOx) ion-storage material that matches the electroactive voltage windows with the paired electrochromic polymers significantly improves the cycling stability of solid-state electrochromic devices. This leads to the creation of high-performance magenta-to-transmissive hybrid electrochromic devices that can be reversibly switched for 50,000 cycles with less than 5% optical loss.
Conjugated electrochromic polymers hold great promises for next-generation color-changing windows and displays. One of the major roadblocks in their solid-state electrochromic devices is the relatively poor cycling stability. Finding ion-storage materials as a charge-balancing component is critical in improving their electrochemical cycling stability. A key criterion for the selection of ion-storage materials is to match their electroactive voltage windows with the paired electrochromic polymers. Thus, we developed a nanostructured, amorphous vanadium oxide (VOx) ion-storage material that exhibits high transmissivity, minimal color interference, and excellent charge-balancing capability in a closely matched electroactive window with the paired electrochromic polymers. High-performance magenta-to-transmissive hybrid electrochromic devices constructed from pairing the polymer with the VOx can be reversibly switched for 50 000 cycles with an optical loss less than 5%.
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