On-demand engineerable visible spectrum by fine control of electrochemical reactions
作者机构：Advanced Energy Storage Technology Research CenterShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences School of Energy and Power Engineering North University of China School of ResourceEnvironment and Safety EngineeringHunan University of Science and Technology School of Energy and Power Engineering Beihang University Shenzhen Key Laboratory of Energy Materials for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenyang National Laboratory for Materials ScienceInstitute of Metal Research Chinese Academy of Sciences
出 版 物：《National Science Review》 (国家科学评论(英文版))
年 卷 期：2024年第11卷第3期
页 面：239-249页
核心收录：
学科分类：07[理学] 070302[理学-分析化学] 0703[理学-化学]
基 金：supported by the National Key R&D Program of China (2022YFB2402600) the National Natural Science Foundation of China (11904379, 52125105, 51972329, 52061160484,52273311, T2293693 and 62205311) the Shenzhen Science and Technology Planning Project (JCYJ20210324101203009,JCYJ20200109115624923 and JSGG20220831104004008) the Guangdong Basic and Applied Basic Research Foundation(2022A1515010937) the Fundamental Research Program of Shanxi Province (202103021223177)
主 题：electrochromics fine control spectral tunability high precision galvanostatic control
摘 要：Tunability of optical performance is one of the key technologies for adaptive optoelectronic applications,such as camouflage clothing, displays, and infrared shielding. High-precision spectral tunability is of great importance for some special applications with on-demand adaptability but remains challenging. Here we demonstrate a galvanostatic control strategy to achieve this goal, relying on the finding of the quantitative correlation between optical properties and electrochemical reactions within materials. An electrochromic electro-optical efficiency index is established to optically fingerprint and precisely identify electrochemical redox reactions in the electrochromic device. Consequently, the charge-transfer process during galvanostatic electrochemical reaction can be quantitatively regulated, permitting precise control over the final optical performance and on-demand adaptability of electrochromic devices as evidenced by an ultralow deviation of 3.0%. These findings not only provide opportunities for future adaptive optoelectronic applications with strict demand on precise spectral tunability but also will promote in situ quantitative research in a wide range of spectroelectrochemistry, electrochemical energy storage, electrocatalysis, and material chemistry.
同方期刊数据库