Nanocomposite Architecture for Rapid, Spectrally-Selective Electrochromic Modulation of Solar Transmittance

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• 作者：Jongwook Kim ; Gary K. Ong ; Yang Wang ; Gabriel LeBlanc ; Teresa E. Williams ; Tracy M. Mattox ; Brett A. Helms ; Delia J. Milliron
• 刊名：Nano Letters
• 出版年：2015
• 出版时间：August 12, 2015
• 年：2015
• 卷：15
• 期：8
• 页码：5574-5579
• 全文大小：353K
• ISSN：1530-6992

文摘

Two active electrochromic materials, vacancy-doped tungsten oxide (WO_3鈥?i>x) nanocrystals and amorphous niobium oxide (NbO_x) glass are arranged into a mesostructured architecture. In a strategy applicable across electrochemical applications, the critical dimensions and interfacial connections in the nanocomposite are designed to optimize pathways for electrochemical charging and discharging. The result is an unprecedented optical range for modulation of visible and near-infrared solar radiation with rapid switching kinetics that indicate the WO_3鈥?i>x nanocrystal framework effectively pumps charge out of the normally sluggish NbO_x glass. The material is durable for at least 2000 electrochemical cycles.