Abstract
A conductive polymer polyaniline(PANI) layer was introduced on the surface of the inverse opal structure tungsten trioxide(IO-WO3) film by the successive ionic layer adsorption and reaction, then a unique core-shell inverse opal structure WO3/PANI(IO-WO3/PANI) film was fabricated. The morphology, composition, and electrochemical behavior of the IO-WO3/PANI film were studied and compared with the IO-WO3 film. When the potential scan ranged from -0.6 V to 1.0 V, the IO-WO3/PANI composite film showed different colors under different voltage states, namely blue(1.0 V), green(0.2 V), light green(0 V) and blue-violet (-0.6 V). Compared with the IO-WO3 film, the electrochromic performance of the IO-WO3/PANI film is signi-ficantly improved. The coloring and fading response times are 3.8 and 6.14 s, respectively, and the color change efficiency(CE) value is 201.1 cm2/C. The improvement of electrochromic performance is mainly attri- buted to the formation of the donor-acceptor system and the hierarchically porous structure in the core-shell inverse opal, which enable rapid ion diffusion and provide a larger surface area for charge transfer reactions. The results show that the IO-WO3/PANI core-shell inverse opal film is a potential multicolor electrochromic material and has broad application prospects in the future.
Translated title of the contribution | Electrochromic Property of the WO3/PANI Core-Shell Inverse Opal Structure Film |
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Original language | Chinese (Traditional) |
Pages (from-to) | 2996-3004 |
Number of pages | 9 |
Journal | Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities |
Volume | 42 |
Issue number | 9 |
DOIs | |
Publication status | Published - 10 Sept 2021 |
Externally published | Yes |
Keywords
- Inverse opal structure
- Multicolor electrochromic
- Organic/inorganic hybrid material
- WO
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Physical Chemistry and characterization(PC2)
Johan Wouters (Manager) & Carmela Aprile (Manager)
Technological Platform Physical Chemistry and characterizationFacility/equipment: Technological Platform