A Multimode Dynamic Color-Changing Device for Smart Windows Based on Integrating Thermochromic and Electrochromic Properties

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(44), P. 60678 - 60685

Published: Oct. 29, 2024

Electro- and thermochromic materials have been greatly applied in smart windows displays due to the excellent properties of color variation solar radiation. However, mono single response voltage temperature hinder their application development. Here, a multimode dynamic color-changing device (T/ECD) was developed by integrating electrochromic property synthetic viologen dyes hydroxypropyl acrylate (HPA). The T/ECD achieves four modes optical regulation, namely, colorless transparent state, tinted opaque which can be regulated independently/coordinately using heat voltage. optimized switched at 1.2 V with 15 s or adjusted transparent/opaque state >34 °C 46 s. In addition, based on red (ViO-R), green (ViO-G), blue (ViO-B) dyes, colorful T/ECDs were successfully designed fabricated, cycling properties, expanding requirement. Moreover, we demonstrated privacy protection. design philosophy successful exploration great prospects for energy-saving buildings, displays, information masking/storage systems.

Language: Английский

Advancing Thermochromic Glass Durability: Reinforcing Thermosensitive Hydrogels with Enhanced Adhesion Techniques

Journal of Composites Science, Journal Year: 2024, Volume and Issue: 8(9), P. 371 - 371

Published: Sept. 20, 2024

The growing use of glass in architecture has driven research into reducing its energy consumption. Thermochromic (TC) technology shows promise for enhancing building efficiency by regulating solar heat dynamically. Although TC helps reduce radiation, additional solutions like Low-E or vacuum are needed to control convection and conduction. glass, while effective lowering transfer, may increase surface temperature. Thermo-sensitive hydrogels, known their light-scattering properties at high temperatures, have been explored complement glass. However, stability elevated temperatures remains a challenge, especially applications requiring durability under varying weather conditions. This study proposes the adhesion between hydrogel introducing silica–oxygen bonds. As result, demonstrates stable performance over 100 cycles within temperature ranges from 85 °C 30 summer 40 −20 winter. Furthermore, incorporating ethylene glycol, freezing point is reduced −26 °C, rendering it suitable colder regions. implementation effectively addresses dual requirements shading winter heating areas with both cold winters hot summers, significantly contributes substantially developing advanced intelligent materials, paving way more sustainable architectural designs.

Language: Английский

Thermal performance of thermochromic smart windows in different indoor environments

Energy and Buildings, Journal Year: 2024, Volume and Issue: unknown, P. 114941 - 114941

Published: Oct. 1, 2024

Language: Английский