Synergistic Electric and Thermal Effects of Electrochromic Devices

Abstract

Electrochromic devices are the preferred devices for smart windows because they work independently of uncontrollable environmental factors and rely more on the user's personal feelings to adjust actively. However, in practical applications, the ambient temperature still has an impact on device performance, such as durability, reversibility and switching performance, etc. These technical issues have significantly slowed down the commercialization of electrochromic devices (ECDs). It is necessary to investigate the main reasons for the influence of temperature on the device and make reasonable optimization to enhance the effectiveness of the device and extend its lifetime. In recent years, with the joint efforts of various outstanding research teams, the performance of electrochromic devices has been rapidly improved, with a longer lifetime, richer colors, and better color contrast. This review highlights the important research on temperature−dependent electrochromic properties in recent years. Also, the reported structures, mechanisms, characteristics, and methods for improving electrochromic properties are discussed in detail. In addition, the challenges and corresponding strategies in this field are presented in this paper. This paper will inspire more researchers to enrich the temperature−dependent properties of ECDs and their related fields with innovative means and methods to overcome the technical obstacles faced.

Machine learning-guided investigation for a high-performance electrochromic device based on ammonium metatungstate-iron(ii) chloride-heavy water electrochromic liquid

“…Both devices show relatively stable Δ T values during the 1000 cycles. Note that according to the literature, 41 a cycling life of 1000 cycles is considered exceptionally long. Such long cycling life can be attributed to the use of heavy water as the solvent.…”

Aprotic Polar Electrolyte Facilitates Indoor Dynamic Optical-Thermal Management in Silver-Based Electro-Reflective Smart Windows

“…5−8 Due to the unique properties of metals, they can rapidly transition from a highly transparent state to a mirror-like state after applying voltage, effectively blocking sunlight and infrared radiation, and thereby preventing energy transfer between indoor and outdoor environments. 9 Current research on electrochromic devices based on reversible metal electrodeposition primarily focuses on material selection, 10−12 structural design, 13−15 and stability enhancement. 16−18 However, there is limited attention on their thermal stability of them.…”

“…To achieve optimal energy savings and light modulation effects, electrochromic smart windows based on reversible metal electrodeposition have been developed . These windows achieve light modulation through the deposition and solution of metal ions under the influence of an electric field. − Due to the unique properties of metals, they can rapidly transition from a highly transparent state to a mirror-like state after applying voltage, effectively blocking sunlight and infrared radiation, and thereby preventing energy transfer between indoor and outdoor environments . Current research on electrochromic devices based on reversible metal electrodeposition primarily focuses on material selection, − structural design, − and stability enhancement. − However, there is limited attention on their thermal stability of them.…”

A Piezoelectric‐Driven Electrochromic/Electrofluorochromic Dual‐Modal Display Device

“…Electrochromic devices (ECDs) have received increased attention from researchers in related fields of opto-electronics, smart windows, reflective displays, and rearview mirrors. [1][2][3] Currently, a series of advanced technologies, including wearable technology, thermal regulation technology, energy storage technology, energy harvesting technology, and sensing technology, are fused with ECDs to construct integrated apparatuses. [4][5][6][7][8][9][10][11][12] These emerging ECD-integrated systems are vigorously developed to expand their practical applications.…”