Multicolor and Multistage Response Electrochromic Color-Memory Wearable Smart Textile and Flexible Display
2021
Wang, Chengcheng | Jiang, Xiaojun | Cui, Peng | Sheng, Mingfei | Gong, Xiaodan | Zhang, Liping | Fu, Shaohai
Electrochromic materials have great application in soft displays and devices, but the application of ideal electrochromic textiles still faces challenges owing to the inconvenience of a continuous power supply. Here, electrochromic color-memory microcapsules (ECM-Ms-red, -yellow, and -blue) with a low drive voltage (2.0 V), coloration efficiency (921.6 cm² C–¹), a practical response rate (34.4 s–¹), multistage response discoloration, and good color-memory performance (>72 h) and reversibility (≥1000 cycles) are developed. The color-memory performance is controlled by the energy difference of oxidation–reduction reactions. A multicolor and multistage response electrochromic color-memory wearable smart textile and flexible display are developed that are convenient and energy-efficient for application. The design philosophy of color-memory based on controllable energy difference of reactions has great potential application in sensors and smart textiles.
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