One-step facile electrochemical preparation of WO3/graphene nanocomposites with improved electrochromic properties
One-step facile electrochemical preparation of WO3/graphene nanocomposites with improved electrochromic properties
复制标题
DOI：
10.1016/j.electacta.2013.11.123
复制
发表时间：
2014-01-20
影响因子：
6.6
通讯作者：
Lee, Pooi See
中科院分区：
文献类型：
--
作者：
Fu, Chaopeng;Foo, Ceyao;Lee, Pooi See
在含有钨物种和氧化石墨烯的水溶液中，通过一步电化学沉积法制备了WO 3和电化学还原氧化石墨烯（WO 3/rGO）纳米复合材料。所制备的WO 3/rGO复合材料中的WO 3为非晶态，以纳米结构形式存在。拉曼光谱证实了WO 3/rGO复合材料中WO 3的共存和氧化石墨烯片的还原。与WO 3薄膜相比，WO 3/rGO薄膜的电致变色性能有了显著的提高。在632.8 nm波长下，WO 3/rGO薄膜具有更快的开关时间、更长的循环寿命和更高的着色效率。这些增强主要是由于rGO协同并入WO 3。(C)2013爱思唯尔有限公司保留所有权利。
WO3 and electrochemical reduced graphene oxide (WO3/rGO) nanocomposites were prepared by one-step facile electrochemical deposition in an aqueous electrolyte containing tungsten species and graphene oxide. The WO3 in the as-prepared WO3/rGO composite is amorphous and exists in the form of nanostructure. Raman spectra confirm the co-existence of WO3 and the reduction of the graphene oxide sheets in the WO3/rGO composite. The electrochromic properties of the WO3/rGO film show significant improvement compared to WO3 films. The WO3/rGO film shows faster switching time, longer cycle life and larger coloration efficiency at the wavelength of 632.8 nm. These enhancements are mainly due to the synergistic incorporation of rGO into WO3. (C) 2013 Elsevier Ltd. All rights reserved.