A layer-stacked NiO nanowire/nanosheet homostructure for electrochromic smart windows with ultra-large optical modulation

Abstract

The structural engineering of active materials in the nanoscale level is crucial to improving the performance of electrochromic devices. However, an insufficient structure design inevitably results in limited electron/ion transportation...

In situ efficient growth of Rubik nanocube WO3·0.33H2O array films for high-performance electrochromic energy storage devices

“…transmittance, absorptivity, and reflectivity) under small voltages, which has sparked considerable interest in the fields of smart windows, anti-glare mirrors, and smart displays. 1–7 For instance, electrochromic smart windows dynamically control the visible-near-infrared (Vis-NIR) light by switching between their transparent and opaque states, efficiently regulating indoor comfort in buildings and vehicles. 8–12 The electrochromic film generally dominates the performance of the device, which is recognized as an indispensable component of the device.…”

Flexible Zn‐ion Electrochromic Batteries with Multiple‐color Variations

“…Currently, research on Zn‐ion electrochromic batteries is in its nascent phase, and the development of cathode materials possessing both remarkable energy capacity and exceptional electrochromic performance poses a formidable challenge [22] . Only a few cathode materials have been reported, such as polyaniline, [22] Prussian blue, [5] V 2 O 5 , [23] WO 3 , [24] NiO 2 , [25] etc., which were not entirely satisfying in terms of specific capacity, cycling stability and diversity of color variations. In addition, Zn anodes encounter challenges of dendrite formation and parasitic reactions with the electrolyte, which significantly compromise the battery performance and cycle stability [26] .…”

Design Strategies for High Reflectivity Contrast and Stability Adaptive Camouflage Electrochromic Supercapacitors

“…Electrochromism (EC) refers to the phenomenon that after the external electric potential signal is applied to it, the material produces the reversible redox reaction to make its optical properties (reflectivity, transmittance, and absorption) change reversibly. − In addition, EC technology is an active color change technology that can achieve the desired color expression through active potential signals, and thus, it has potential applications in the field of adaptive camouflage. , However, applying EC technology to the field of camouflage remains a formidable challenge, specifically in terms of (i) adaptive camouflage in the visible region requiring EC materials to change their colors with the color of the external environment; (ii) the device needs for high reflectivity for better camouflage; and (iii) excellent cycling stability of the device. To create an effective adaptive camouflage, particularly for a yellow-green adaptive camouflage device, the development of superior EC materials and device design strategies is essential.…”