Constructed TiO2/NiO Core/Shell Nanorod Array for Efficient Electrochromic Application

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• 作者：Guofa Cai ; Jiangping Tu ; Ding Zhou ; Lu Li ; Jiaheng Zhang ; Xiuli Wang ; Changdong Gu
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：April 3, 2014
• 年：2014
• 卷：118
• 期：13
• 页码：6690-6696
• 全文大小：492K
• 年卷期：v.118,no.13(April 3, 2014)
• ISSN：1932-7455

文摘

A TiO₂/NiO core/shell nanorod array film is prepared by the combination of hydrothermal and chemical-bath deposition. Compared to the NiO nanoflake film, the TiO₂/NiO core/shell nanorod array exhibits better electrochromism with reversible color changes bewteen transparency and dark brown, shows larger optical modulation (83%), higher coloration efficiency (60.6 cm² C^{1鈥?/sup>) and better cycling performance. The enhancement of electrochromic performances is attributed to the synergetic contribution from the single crystalline TiO₂ nanorod core and the ultrathin NiO nanoflake shell, as well as the ordered array geometry, which can all offer direct electrical pathways for electrons and increase the electron transport rate.}