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Transparent Zinc-Mesh Electrodes for Solar-Charging Electrochromic Windows.
Advanced Materials ( IF 29.4 ) Pub Date : 2020-09-21 , DOI: 10.1002/adma.202003574
Haizeng Li 1 , Wu Zhang 1 , Abdulhakem Y Elezzabi 1
Affiliation  

Newly born zinc‐anode‐based electrochromic devices (ZECDs), incorporating electrochromic and energy storage functions in a single transparent platform, represent the most promising technology for next‐generation transparent electronics. As the existing ZECDs are limited by opaque zinc anodes, the key focus should be on the development of transparent zinc anodes. Here, the first demonstration of a flexible transparent zinc‐mesh electrode is reported for a ZECD window that yields a remarkable electrochromic performance in an 80 cm2 device, including rapid switching times (3.6 and 2.5 s for the coloration and bleaching processes, respectively), a high optical contrast (67.2%), and an excellent coloration efficiency (131.5 cm2 C−1). It is also demonstrated that such ZECDs are perfectly suited for solar‐charging smart windows as they inherently address the solar intermittency issue. These windows can be colored via solar charging during the day, and they can be bleached during the night by supplying electrical energy to electronic devices. The ZECD smart window platform can be scaled to a large area while retaining its excellent electrochromic characteristics. These findings represent a new technology for solar‐charging windows and open new opportunities for the development of next‐generation transparent batteries.

中文翻译:

透明的锌网电极,用于太阳能电致变色窗。

新生的基于锌阳极的电致变色器件(ZECD)在单个透明平台中集成了电致变色和能量存储功能,代表了下一代透明电子产品最有希望的技术。由于现有ZECDs是限制Ê由不透明锌阳极d,关键重点应放在透明锌阳极的发展。在此,首次报道了用于ZECD窗口的柔性透明锌网电极的首次演示,该窗口在80 cm 2的设备中具有出色的电致变色性能,包括快速的切换时间(分别用于着色和漂白过程的时间为3.6和2.5 s)。 ,高光学对比度(67.2%)和出色的着色效率(131.5 cm 2 C -1)。还证明了此类ZECD固有地解决了太阳能间歇性问题,因此非常适合用于太阳能智能窗户。这些窗户在白天可以通过太阳能充电来着色,而在夜间可以通过向电子设备提供电能来漂白。ZECD智能窗口平台可以扩展到大面积,同时保留其出色的电致变色特性。这些发现代表了一种用于太阳能充电窗的新技术,并为下一代透明电池的开发提供了新的机遇。
更新日期:2020-10-26
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