Shi-Ming Wang, Kai-Hua Wang, Lu Zhou, Tianyang Lu, Eunkyoung Kim, Zhengbo Han, Jun Liang Lin, Lin Liu, Guodong Li
{"title":"Room-Temperature Spin-Coatable Polyoxometalate Composites for High-Contrast, Large-Area Electrochromic Capacitive Films","authors":"Shi-Ming Wang, Kai-Hua Wang, Lu Zhou, Tianyang Lu, Eunkyoung Kim, Zhengbo Han, Jun Liang Lin, Lin Liu, Guodong Li","doi":"10.1039/d4ta06915c","DOIUrl":null,"url":null,"abstract":"Room-temperature spin-coatable polyoxometalate based composite is explored for low cost electrochromic capacitive film. Transparent stable K6P2W18O64 -polyvinyl alcohol (P2W18-PVA) solution was developed which suit for rigid and flexible substrates. The electrodeposited HKUST-1 particles were employed to create the pore structure in the film leading facile ion transportation. The excellent EC performance of P2W18 was fully expressed in this thin film with the thickness of 500 nm. The state-of-the-art record of 95% optical contrast and 1600 stable EC cycles are achieved. Electrochromic energy storage device with the capacity of 7.89 mF cm-2 was realized with MnO2 as counter electrode. This strategy for the preparation of highly stable and transparent POMs coating at room temperature is a general and simple solution that is not limited to the preparation of electrochromic films.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"6 1","pages":""},"PeriodicalIF":10.7000,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4ta06915c","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Room-temperature spin-coatable polyoxometalate based composite is explored for low cost electrochromic capacitive film. Transparent stable K6P2W18O64 -polyvinyl alcohol (P2W18-PVA) solution was developed which suit for rigid and flexible substrates. The electrodeposited HKUST-1 particles were employed to create the pore structure in the film leading facile ion transportation. The excellent EC performance of P2W18 was fully expressed in this thin film with the thickness of 500 nm. The state-of-the-art record of 95% optical contrast and 1600 stable EC cycles are achieved. Electrochromic energy storage device with the capacity of 7.89 mF cm-2 was realized with MnO2 as counter electrode. This strategy for the preparation of highly stable and transparent POMs coating at room temperature is a general and simple solution that is not limited to the preparation of electrochromic films.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.