A Mini-Review: Pyridyl-Based Coordination Polymers for Energy Efficient Electrochromic Application

Shiyou Liu,Congyuan Wei,Ping Zhang,Guofa Cai,Jianjian Fu

doi:10.3389/fenrg.2021.620203

Shiyou Liu, Congyuan Wei + Show 3 more

Open Access

https://doi.org/10.3389/fenrg.2021.620203

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Abstract

Electrochromic devices (ECDs) have a broad range of application prospects in many important energy efficient optoelectronic fields, such as smart windows, anti-glare rearview mirrors, low-energy displays, and infrared camouflage. However, there are some factors restricting their development, such as low coloration efficiency, slow switching speed, and poor cycling stability. Coordination polymer (CP) is a promising active material for the fabrication of high-performance ECD because of its ultrahigh coloration efficiency, fast switching speed, and excellent cycling stability. In this review, current advances of CP in energy efficient ECDs are comprehensively summarized and evaluated. Specifically, the effects of composition, coordination bonding, and microstructure of the bipyridine- and terpyridine-based CP on EC performances are introduced and discussed in detail. Then, the challenges and prospects of this booming field are proposed. Finally, the broad application prospects of the CPs-based EC materials and the corresponding devices are also demonstrated, which hold numerous revolutionary effects over our daily life. Hopefully, this review would provide useful guidance and further promote progress on the electrochromic and other optoelectronic fields.

Highlights

The environment is facing unprecedented challenges owing to a serious energy crisis and environmental pollution (Li M. et al, 2019; Huang et al, 2020; Xu et al, 2020)
The Effect of Structure on EC Performances The assembled Coordination polymer (CP) film based on pyridine-bipyridine with different bond order complexes and the same ion (II) can deliver different colors and electrochemical cycling stability
Different film coating methods may lead to different morphologies, microstructures, and uniformity, which have a significant impact on the EC and electrochemical performances of Electrochromic devices (ECDs)

Summary

A Mini-Review

Pyridyl-Based Coordination Polymers for Energy Efficient Electrochromic Application. Electrochromic devices (ECDs) have a broad range of application prospects in many important energy efficient optoelectronic fields, such as smart windows, anti-glare rearview mirrors, low-energy displays, and infrared camouflage. Coordination polymer (CP) is a promising active material for the fabrication of high-performance ECD because of its ultrahigh coloration efficiency, fast switching speed, and excellent cycling stability. Current advances of CP in energy efficient ECDs are comprehensively summarized and evaluated. The broad application prospects of the CPs-based EC materials and the corresponding devices are demonstrated, which hold numerous revolutionary effects over our daily life. This review would provide useful guidance and further promote progress on the electrochromic and other optoelectronic fields

INTRODUCTION

Methods for Preparing Electrochromic Films

Findings

CONCLUSIONS AND OUTLOOK