Dual Tinting Dynamic Windows Using Reversible Metal Electrodeposition and Prussian Blue
Dual Tinting Dynamic Windows Using Reversible Metal Electrodeposition and Prussian Blue
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DOI：
10.1021/acsami.9b13942
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发表时间：
2019-10-30
影响因子：
9.5
通讯作者：
Barile, Christopher J.
中科院分区：
文献类型：
--
作者：
Islam, Shakirul M.;Barile, Christopher J.
基于可逆金属电沉积的电致变色窗口由于金属薄膜的不透明度而具有较高的光学对比度，是电致变色材料的一种很有前途的替代方案。虽然传统的金属基动态窗口使用金属对电极框架，但工作电极上的金属电沉积必须与促进横向离子迁移的平面平行对电极配对，以实现大规模均匀的金属电沉积。在这篇手稿中，我们开发了动态窗口，它将工作电极上的可逆电沉积与普鲁士蓝对电极相结合，普鲁士蓝对电极既充当嵌入K+离子的电荷储存层，又充当阳极着色材料。由于两个电极在窗口着色过程中都变暗，25 cm(2)器件的开关在700 nm处的光学对比度类似于3个S的67.5%，使其成为该规模上报道的使用可逆金属电沉积的动态窗口中速度最快的。
Electronically tintable windows based on reversible metal electrodeposition are a promising alternative to electrochromic materials due to the high optical contrast imparted by the opacity of thin metal films. While traditional metal-based dynamic windows utilize a metal counter electrode frame, metal electrodeposition on the working electrode must be paired with a plane-parallel counter electrode that facilitates transverse ion migration to enable uniform metal electrodeposition on a large scale. In this manuscript, we develop dynamic windows that combine reversible Bi electrodeposition on the working electrode with a Prussian blue counter electrode that acts as both a charge storage layer that intercalates K+ ions and an anodically coloring material. Since both electrodes darken during window tinting, 25 cm(2) devices switch with an optical contrast of similar to 67.5% at 700 nm in only 3 s, making them the fastest dynamic windows using reversible metal electrodeposition reported on this scale.