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Synthesis of high-performance electrochromic thin films by a low-cost method.
- Source :
-
Ceramics International . Mar2021, Vol. 47 Issue 6, p7837-7844. 8p. - Publication Year :
- 2021
-
Abstract
- Metal-doping is an effective method to adjust the physical and chemical properties of semiconductor metal oxides. This work adopts a simple solvothermal method to synthesize Mo-doped tungsten oxide nanoparticles. The high-performance electrochromic films can be homogenously formed on ITO glass without post-annealing. Compared with pure WO 3 films, the optimized Mo-doped WO 3 films show improved electrochromic properties with significant optical contrast (68.3% at 633 nm), the short response time (6.3 s and 3.9 s for coloring and bleaching, respectively), and excellent coloration efficiency (107.2 cm2 C−1). The improved electrochromic behavior is mainly due to the increasing diffusion rate of Li+ in Mo-doped WO 3 films (increased 20% than that of pure WO 3 films). The porous surface of Mo-doped WO 3 film shortens the diffusion path of Li+. Besides, Mo doping reduces the resistance and improves conductivity. Furthermore, 2at% Mo-doped WO 3 films indicate satisfactory energy-storage properties (the specific capacitance is 73.8 F g−1), resulting from the enhanced electrochemical activity and fast electrical conductivity. This work presents a practical and economical way of developing high-performance active materials for bifunctional electrochromic devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 47
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 148885025
- Full Text :
- https://doi.org/10.1016/j.ceramint.2020.11.130