期刊
ACS APPLIED ELECTRONIC MATERIALS
卷 4, 期 9, 页码 4724-4732出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaelm.2c00921
关键词
vanadium oxide; sol-gel; composite film; electrochromic materials; flexible devices; reflection tuning
资金
- National Natural Science Foundation of China [51472189]
- Henan Key Laboratory of Special Protective Materials [SZKFKT202101]
This study presents a vanadium pentoxide (V2O5)-cellulose composite electrochromic film with remarkable cycling stability and a wide range of color options. Flexible reflective electrochromic devices were successfully assembled using the prepared composite films, allowing for free switching between yellow and blue. The devices showed a low drive voltage and rapid switching response time after 1000 cycles.
Electrochromic devices show great potential for color switchability and ease of manipulation for reflection tuning. However, the devices' color fit and cycle stability make it difficult to meet the requirements of functional reflective product applications. Herein, a vanadium pentoxide (V2O5)-cellulose composite electrochromic film with remarkable cycling stability and a wide range of color options is presented. Flexible reflective electrochromic devices realizing free switching between yellow and blue were successfully assembled by the prepared composite films; in the test, the device possesses a low drive voltage (+/- 1 V) and a rapid switching response time (& LE;5.6 s) and excellent working status after 1000 cycles. Besides, the assembled devices demonstrated an exceptional range of optical reflection modulation upon excitation. This study presents a direction for the selection of suitable devices in the field of flexible functional materials and broadens the scope of electrochromic applications.
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