A stretchable electrochromic display with a self-powered feature is an attractive concept in addressing the demands of information visualization and interaction without an external power supply for next-generation wearable and portable electronics. Herein, a self-powered stretchable electrochromic display is proposed for the first time, with WO₃ on the stretchable conductor as the electrochromic electrode integrated in parallel with the Zn/carbon electrodes and topped with a ZnCl₂-based organohydrogel. This geometrically designed electrochromic device can be self-colored by the chemical potential gap between WO₃/Zn electrodes. The self-bleaching process caused by the oxidation of the reduced WO₃ electrode is facilitated by the leakage current between the WO₃/carbon electrodes. In this constructed self-powered system, the electrochromic electrode shows reversible coloring/bleaching performance up to 50% strain and maintains favorable stability with power-free reversible electrochemical switching for 400 cycles. Optical contrast retention at 81% is maintained for 200 stretching/recovery cycles. The prepared device combined with a phosphorescent substrate is demonstrated as a light-adaptable stretchable display, where the “on/off” states of the display are shown in both bright and dark conditions without power consumption. This work provides broad application prospects for futuristic multifunctional stretchable and portable display electronics.

中文翻译：

---

自供电和光自适应可拉伸电致变色显示器

具有自供电功能的可拉伸电致变色显示器是一个很有吸引力的概念，可以满足下一代可穿戴和便携式电子产品在无需外部电源的情况下信息可视化和交互的需求。在此，首次提出了一种自供电可伸缩电致变色显示器，在可伸缩导体上使用 WO ₃作为电致变色电极，与 Zn/碳电极并联集成，并在顶部覆盖 ZnCl ₂基有机水凝胶。_{这种几何设计的电致变色器件可以通过WO 3} /Zn电极之间的化学势隙进行自着色。_{还原态WO 3}氧化引起的自漂白过程_{WO 3} /碳电极之间的漏电流促进了电极。在这个构建的自供电系统中，电致变色电极显示出高达 50% 应变的可逆着色/漂白性能，并通过 400 个循环的无电可逆电化学开关保持良好的稳定性。在 200 次拉伸/恢复循环中保持 81% 的光学对比度保留。所制备的器件与磷光基板相结合，被证明是一种光适应性可拉伸显示器，其中显示器的“开/关”状态在明亮和黑暗条件下均显示，无需功耗。这项工作为未来的多功能可拉伸便携式显示电子产品提供了广阔的应用前景。