电致变色
铈
材料科学
兴奋剂
氧化钨
氧化铈
离子
电化学
无机化学
钨
氧化物
化学
冶金
光电子学
有机化学
电极
物理化学
作者
Shanshan Nie,Chengyi Wang,Miao Zhou,Yi Lian,Jie Liu,Mengnan Ruan,Zhifeng Liu
出处
期刊:Nanoscale
[Royal Society of Chemistry]
日期:2025-01-01
卷期号:17 (10): 6090-6102
被引量:9
摘要
The electrochromic layer is the key part of the electrochromic device, and it is usually necessary to introduce nanomaterials or other functional materials to improve the response speed and stability. In this paper, a cerium acetate-doped tungsten oxide film (WO3-CA) prepared by a hydrothermal and annealing method is presented and compared with a pure tungsten oxide film (WO3) and an acetate-doped tungsten oxide film (WO3-HAC) in terms of electrochromic performance. The electrochemical analysis results show that the Li+ diffusion rate of the WO3-CA film is 37.36 × 10-12 cm2 s-1, which is 2.6 and 2.2 times higher than that of pure WO3 (14.21 × 10-12 cm2 s-1) and WO3-HAC (16.93 × 10-12 cm2 s-1), respectively. Combined with density-functional theory (DFT) simulations, it was investigated whether the introduction of cerium acetate forms new Ce-O coordination bonds with oxygen atoms in WO3 and exposes more (002) crystal faces. In addition, the introduction of acetate ions also contributes to the improvement of the structural stability and electrochemical properties of the films, which promotes the enhancement of the electrochromic effect. This mechanism provides a new idea for optimizing electrochromic materials.
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