期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 43, 页码 40043-40049出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b13942
关键词
dynamic windows; reversible metal electrodeposition; electrochromism; Prussian blue; bismuth electrodeposition
资金
- Research and Innovation at the University of Nevada, Reno (UNR)
- National Science Foundation [CHE-1429768]
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.
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