Research Progress in Ionic Liquid-Based Electrolytes for Electrochromic Devices

Electrochromic (EC) technology has become one of the smart technologies with the most potential for development and application at this stage. Based on electrochromic devices (ECDs), this technology has shown extraordinary potential in the fields of smart windows, display devices, and sensing system...

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Main Authors: Hao Zhang, Yixuan Liu, Xuehan Wang, Keying Feng, Qilin Wang, Zheng Chen, Zhenhua Jiang
Format: Article
Language:English
Published: MDPI AG 2025-02-01
Series:Molecules
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Online Access:https://www.mdpi.com/1420-3049/30/4/973
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author Hao Zhang
Yixuan Liu
Xuehan Wang
Keying Feng
Qilin Wang
Zheng Chen
Zhenhua Jiang
author_facet Hao Zhang
Yixuan Liu
Xuehan Wang
Keying Feng
Qilin Wang
Zheng Chen
Zhenhua Jiang
author_sort Hao Zhang
collection DOAJ
description Electrochromic (EC) technology has become one of the smart technologies with the most potential for development and application at this stage. Based on electrochromic devices (ECDs), this technology has shown extraordinary potential in the fields of smart windows, display devices, and sensing systems. With the optimization and iteration of various core components in ECDs, the electrolyte layer, a key component, evolved from its initial liquid state to a quasi-solid state and solid state. As driven by increasing application demands, the development trend indicates that all-solid-state, transparent electrolytes will likely become the future form of the electrolyte layer. Recently, the application of ionic liquid (IL)-based electrolytes in the field of electrochromism attracted a lot of attention due to their ability to bring outstanding EC cycling stability, thermal stability, and a wider operating voltage range to ECDs, and they are regarded as the new generation of electrolyte materials with the most potential for application. Although compared with conventional electrolytes, IL-based electrolytes have the characteristics of high price, high viscosity, and low conductivity, they are still considered the most promising electrolyte materials for applications. However, so far, there has been a lack of comprehensive analysis reports on “Research progress in ionic liquid-based electrolytes for electrochromic devices” within the EC field. In this article, the research progress of IL-based electrolytes in ECDs will be summarized from three perspectives: liquid, quasi-solid, and solid state. The future development directions of IL-based electrolytes for ECDs are discussed.
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publishDate 2025-02-01
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spelling doaj-art-c3554355b05b4f17bf6a7aa67716fa0c2025-08-20T02:03:41ZengMDPI AGMolecules1420-30492025-02-0130497310.3390/molecules30040973Research Progress in Ionic Liquid-Based Electrolytes for Electrochromic DevicesHao Zhang0Yixuan Liu1Xuehan Wang2Keying Feng3Qilin Wang4Zheng Chen5Zhenhua Jiang6Key Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, ChinaKey Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, ChinaKey Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, ChinaKey Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, ChinaKey Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, ChinaKey Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, ChinaKey Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, ChinaElectrochromic (EC) technology has become one of the smart technologies with the most potential for development and application at this stage. Based on electrochromic devices (ECDs), this technology has shown extraordinary potential in the fields of smart windows, display devices, and sensing systems. With the optimization and iteration of various core components in ECDs, the electrolyte layer, a key component, evolved from its initial liquid state to a quasi-solid state and solid state. As driven by increasing application demands, the development trend indicates that all-solid-state, transparent electrolytes will likely become the future form of the electrolyte layer. Recently, the application of ionic liquid (IL)-based electrolytes in the field of electrochromism attracted a lot of attention due to their ability to bring outstanding EC cycling stability, thermal stability, and a wider operating voltage range to ECDs, and they are regarded as the new generation of electrolyte materials with the most potential for application. Although compared with conventional electrolytes, IL-based electrolytes have the characteristics of high price, high viscosity, and low conductivity, they are still considered the most promising electrolyte materials for applications. However, so far, there has been a lack of comprehensive analysis reports on “Research progress in ionic liquid-based electrolytes for electrochromic devices” within the EC field. In this article, the research progress of IL-based electrolytes in ECDs will be summarized from three perspectives: liquid, quasi-solid, and solid state. The future development directions of IL-based electrolytes for ECDs are discussed.https://www.mdpi.com/1420-3049/30/4/973ionic liquid-based electrolytespolymeric ionic liquid-based electrolyteselectrochromic devices
spellingShingle Hao Zhang
Yixuan Liu
Xuehan Wang
Keying Feng
Qilin Wang
Zheng Chen
Zhenhua Jiang
Research Progress in Ionic Liquid-Based Electrolytes for Electrochromic Devices
Molecules
ionic liquid-based electrolytes
polymeric ionic liquid-based electrolytes
electrochromic devices
title Research Progress in Ionic Liquid-Based Electrolytes for Electrochromic Devices
title_full Research Progress in Ionic Liquid-Based Electrolytes for Electrochromic Devices
title_fullStr Research Progress in Ionic Liquid-Based Electrolytes for Electrochromic Devices
title_full_unstemmed Research Progress in Ionic Liquid-Based Electrolytes for Electrochromic Devices
title_short Research Progress in Ionic Liquid-Based Electrolytes for Electrochromic Devices
title_sort research progress in ionic liquid based electrolytes for electrochromic devices
topic ionic liquid-based electrolytes
polymeric ionic liquid-based electrolytes
electrochromic devices
url https://www.mdpi.com/1420-3049/30/4/973
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AT keyingfeng researchprogressinionicliquidbasedelectrolytesforelectrochromicdevices
AT qilinwang researchprogressinionicliquidbasedelectrolytesforelectrochromicdevices
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