Electrochromism via reversible electrodeposition of solid iodine
Abstract Electrochromic materials were discovered in the 1960s when scientists observed reversible changes between the light and dark states in WO3 thin films under different voltages. Since then, researchers have identified various electrochromic material systems, including transition metal oxides,...
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55348-x |
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| author | Shanlin Li Yingyu Chen Zhen Wang Mengmeng Wang Xianglin Guo Xueqing Tang Xiaoyu Wang Wende Lai Meiyun Tong Changhong Wang Shan Cong Fengxia Geng Yong Chen Zhigang Zhao |
| author_facet | Shanlin Li Yingyu Chen Zhen Wang Mengmeng Wang Xianglin Guo Xueqing Tang Xiaoyu Wang Wende Lai Meiyun Tong Changhong Wang Shan Cong Fengxia Geng Yong Chen Zhigang Zhao |
| author_sort | Shanlin Li |
| collection | DOAJ |
| description | Abstract Electrochromic materials were discovered in the 1960s when scientists observed reversible changes between the light and dark states in WO3 thin films under different voltages. Since then, researchers have identified various electrochromic material systems, including transition metal oxides, polymer materials, and small molecules. However, the electrochromic phenomenon has rarely been observed in non-metallic elemental substances. Herein, we propose the development of non-metallic iodine electrodeposition-based electrochromic dynamic windows using a water-in-salt electrolyte containing iodine ions. The unique electrolyte environment and solvation structure of the water-in-salt electrolyte suppress the dissolution and shuttle effect of iodine, thereby achieving a different reaction pathway compared to traditional electrolytes. This pathway involves a reversible solid-liquid transition between solid iodine and solvated iodide ions. The iodine electrodeposition-based electrochromic dynamic window demonstrates a high optical contrast of 76.0% with near colour neutrality and excellent cycling stability. A practical 400 cm2 complementary dynamic window is fabricated to demonstrate good electrochromic performance, including high optical contrast, a near colour-neutral opaque state, fast response time, uniform modulation, and polarity-switchable functionality. |
| format | Article |
| id | doaj-art-b1a34f78a4884ffca6117bf7cf3dde8f |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-b1a34f78a4884ffca6117bf7cf3dde8f2025-01-19T12:31:27ZengNature PortfolioNature Communications2041-17232025-01-0116111010.1038/s41467-024-55348-xElectrochromism via reversible electrodeposition of solid iodineShanlin Li0Yingyu Chen1Zhen Wang2Mengmeng Wang3Xianglin Guo4Xueqing Tang5Xiaoyu Wang6Wende Lai7Meiyun Tong8Changhong Wang9Shan Cong10Fengxia Geng11Yong Chen12Zhigang Zhao13Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Collaborative Innovation Center of Marine Science and Technology, Hainan UniversityHainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Collaborative Innovation Center of Marine Science and Technology, Hainan UniversityHainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Collaborative Innovation Center of Marine Science and Technology, Hainan UniversityHainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Collaborative Innovation Center of Marine Science and Technology, Hainan UniversityHainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Collaborative Innovation Center of Marine Science and Technology, Hainan UniversitySchool of Nano-Technology and Nano-Bionics, University of Science and Technology of ChinaSchool of Physics and Optoelectronic Engineering, Hainan UniversityHainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Collaborative Innovation Center of Marine Science and Technology, Hainan UniversityHainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Collaborative Innovation Center of Marine Science and Technology, Hainan UniversitySchool of Materials Science and Engineering, Suzhou University of Science and TechnologySchool of Nano-Technology and Nano-Bionics, University of Science and Technology of ChinaCollege of Energy, Soochow UniversityGuangdong Key Laboratory for Hydrogen Energy Technologies; School of Materials Science and Hydrogen Energy, Foshan UniversitySchool of Nano-Technology and Nano-Bionics, University of Science and Technology of ChinaAbstract Electrochromic materials were discovered in the 1960s when scientists observed reversible changes between the light and dark states in WO3 thin films under different voltages. Since then, researchers have identified various electrochromic material systems, including transition metal oxides, polymer materials, and small molecules. However, the electrochromic phenomenon has rarely been observed in non-metallic elemental substances. Herein, we propose the development of non-metallic iodine electrodeposition-based electrochromic dynamic windows using a water-in-salt electrolyte containing iodine ions. The unique electrolyte environment and solvation structure of the water-in-salt electrolyte suppress the dissolution and shuttle effect of iodine, thereby achieving a different reaction pathway compared to traditional electrolytes. This pathway involves a reversible solid-liquid transition between solid iodine and solvated iodide ions. The iodine electrodeposition-based electrochromic dynamic window demonstrates a high optical contrast of 76.0% with near colour neutrality and excellent cycling stability. A practical 400 cm2 complementary dynamic window is fabricated to demonstrate good electrochromic performance, including high optical contrast, a near colour-neutral opaque state, fast response time, uniform modulation, and polarity-switchable functionality.https://doi.org/10.1038/s41467-024-55348-x |
| spellingShingle | Shanlin Li Yingyu Chen Zhen Wang Mengmeng Wang Xianglin Guo Xueqing Tang Xiaoyu Wang Wende Lai Meiyun Tong Changhong Wang Shan Cong Fengxia Geng Yong Chen Zhigang Zhao Electrochromism via reversible electrodeposition of solid iodine Nature Communications |
| title | Electrochromism via reversible electrodeposition of solid iodine |
| title_full | Electrochromism via reversible electrodeposition of solid iodine |
| title_fullStr | Electrochromism via reversible electrodeposition of solid iodine |
| title_full_unstemmed | Electrochromism via reversible electrodeposition of solid iodine |
| title_short | Electrochromism via reversible electrodeposition of solid iodine |
| title_sort | electrochromism via reversible electrodeposition of solid iodine |
| url | https://doi.org/10.1038/s41467-024-55348-x |
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