Toward Next‐Generation Smart Windows: An In‐depth Analysis of Dual‐Band Electrochromic Materials and Devices

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(11)

Published: Jan. 16, 2024

Abstract As the proportion of buildings energy consumption increases, issue low utilization efficiency becomes increasingly prominent. Approximately 45% is lost through doors and windows, a significant concern that has drawn society's attention to potential electrochromic technology, which can regulate light transmittance absorption effectively. Specifically, dual‐band materials offer promising solution this issue, as they manipulate transmission ratios visible (VIS) near‐infrared (NIR) obtain “bright,” “cold,” “warm,” “dark” independent modes. However, research on smart windows still infant, many challenges including performance assembly issues, are obstacles advancement application technology. This review clarifies basic characteristics configurations, operational mechanisms, assessment parameters. In‐depth examination methods for achieving modulation provided, along with an analysis solutions issues. Finally, future prospects (ESWs) underscored. The hope eventually facilitate commercial these significantly contribute creation modern, energy‐efficient buildings.

Language: Английский

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Quadruple Control Electrochromic Devices Utilizing Ce₄W₉O₃₃ Electrodes for Visible and Near‐Infrared Transmission Intelligent Modulation

Advanced Science, Journal Year: 2024, Volume and Issue: 11(14)

Published: Feb. 4, 2024

Abstract Electrochromic smart windows are promising for building energy savings due to their dynamic regulation of the solar spectrum. Restricted by materials or traditional complementary device configuration, precisely and independently controlling visible (VIS) near‐infrared (NIR) light is still on drawing board. Herein, a novel Zn 2+ electrochemically active Ce 4 W 9 O 33 electrode reported, which demonstrates three distinct states, including VIS NIR transparent “bright warm” state, opaque “dark cool” state. A dual‐operation mode electrochromic platform also presented integrating /NiO anode‐based (Ce /Zn/NiO device). Such enables an added thus realizing four color states through individually NiO electrodes, respectively. These results present effective approach facilitating more intelligent weather/season conditions personal preferences.

Language: Английский

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Continuous Solar Energy Conversion Windows Integrating Zinc Anode‐Based Electrochromic Device and IoT System

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: June 28, 2024

Integration of solar cells and electrochromic windows offers crucial contributions to green buildings. Solar-charging zinc anode-based devices (ZECDs) present opportunities for addressing the intermittency issue. However, limited energy storage capacity ZECDs results in wasted harnessing as well overcharging. Herein, spectral-selective dual-band that continuously transport indoor appliances by remotely controlling repeated bleached-tinted cycles during daytime, are reported. Hexagonal phase cesium-doped tungsten bronze (h-Cs

Language: Английский

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A semi-solid, polychromatic dual-band electrochromic smart window: Visualizing sunlight and solar heat transmission

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149628 - 149628

Published: Feb. 13, 2024

Language: Английский

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Amorphous and Crystalline Ti-Doped WO₃·2H₂O for Dual-Band Electrochromic Smart Windows

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(14), P. 5459 - 5467

Published: March 29, 2024

The dual-band electrochromic smart windows (DESW) can selectively modulate visible (VIS) and near-infrared (NIR) transmittance, which is expected to effectively reduce building energy consumption. However, the complex preparation of materials has restricted further development DESW. In this work, amorphous crystalline Ti-doped WO3·2H2O (TiWH) were synthesized by a simple precipitation method, does not require strict control oxygen content temperature. Ti doping reduced crystallinity increased specific surface area. 3% TiWH films exhibited excellent electrochromism with high transmittance modulation (633 nm: 83.8%, 1050 72.5%), fast response time (bleached/colored time: 14.9/15.3 s at 633 nm, 16.0/3.5 nm), good coloration efficiency 22.8 cm2 C–1, 90.8 C–1), capacitance 47.1 mF cm–2 0.1 mA cm–2. device still maintain (bright, cool, dark modes). storage make have application prospect in green buildings.

Language: Английский

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Selective Electrochromic Regulation for Near-Infrared and Visible Light via Porous Tungsten Oxide Films with Core/Shell Architecture

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(19), P. 23412 - 23420

Published: May 2, 2023

Dual-band electrochromic smart windows have become a research hotspot owing to their unique ability selectively control near-infrared (NIR) and visible (VIS) light. However, the design exploitation of dual-band films are still an extreme challenge due scarcity relevant high-performance materials. To solve this issue, we here proposed type porous WO3 film with nanowires/nanoparticles core/shell architecture as promising candidate, endowing feature. Moreover, mechanism electrochromism is illustrated by response transmittance spectra in Li+-based or TBA+-based electrolytes distinguish electrochemical behavior cyclic voltammetry determine degree diffusion-limited kinetics. Our results indicate that performance credited progressive reduction procedure, which capacitive charging process gives rise NIR regulation following ion intercalation contributes VIS light modulation. Furthermore, develop energy storage prototype device utilizing film. This work describes judicious strategy for designing films, promoting evolution technology.

Language: Английский

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Dual-Band Electrochromism in Hydrous Tungsten Oxide

ACS Photonics, Journal Year: 2023, Volume and Issue: 10(9), P. 3409 - 3418

Published: Sept. 1, 2023

The independent modulation of visible and near-infrared light by a single material, termed dual-band electrochromism, is highly desirable for smart windows to enhance the energy efficiency buildings. Tungsten oxides are commercially important electrochromic materials, exhibiting reversible absorption when electrochemically reduced in an electrolyte containing small cations or protons. presence structural water tungsten has been associated with faster switching speeds. Here, we find that WO3·H2O, crystalline hydrate, exhibits electrochromism unlike anhydrous WO3. This provides heretofore unexplored route tune response oxides. Absorption achieved at low Li+/e– injection, followed higher injection as result induced phase transition. We propose possible due more open structure WO3·H2O compared facilitates extended solid-solution Li+ insertion regime benefits radiation via plasmon absorption. Higher degrees lead polaronic localized charge storage. These results inform how factors influence spectral transition-metal role beyond optical speed.

Language: Английский

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Structural Water in Amorphous Tungsten Oxide Hydrate Enables Fast and Ultrastable Regulation of Near‐Infrared Light Transmittance

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(10)

Published: March 14, 2023

Abstract Amorphous tungsten oxides typically show low near infrared (NIR) light selectivity owing to the overlapped modulation of visible and NIR originating from ion insertion induced polaronic adsorption, poor cycling stability due trapping effects during repeated insertion/extraction. Here it is reported that structural water in amorphous oxide hydrate can induce selective fast with extremely high stability. The enhanced electrochromic (EC) capability found be associated dominant pseudocapacitive behavior promoted by water. EC process avoids deep insertion, slow diffusion kinetics, occur conventional diffusion‐controlled process, leading selectivity, response speed, exceptional By tuning amount water, WO 3 ·0.9H 2 O films optimum performance optical 69%, times <3 s, coloration efficiency 312 cm C −1 , 12 000 cycles at wavelength 1100 nm, which represents state‐of‐the‐art for oxide‐based materials, making a promising material managing solar heat.

Language: Английский

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Atomic tailoring-induced deficiency in tungsten oxides for high-performance energy-related devices

Tungsten, Journal Year: 2023, Volume and Issue: 6(2), P. 269 - 277

Published: July 20, 2023

Language: Английский

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Recent progress in improving strategies of metal oxide-based electrochromic smart window

Green Energy and Resources, Journal Year: 2023, Volume and Issue: 1(1), P. 100007 - 100007

Published: Feb. 22, 2023

The consumption of energy by buildings accounts for 30% the total amount social primary used, and approximately 30%∼50% this is lost through windows. To promote conservation, green development buildings, revolutionarily upgrade production consumption, developing energy-efficient windows while preserving architectural aesthetics necessary. Electrochromic smart (ESWs) can control solar transmitted into based on personal preference or weather conditions, thereby reducing consumed lighting cooling. optical transmittance ESWs changed applying different voltages, they maintain their state without input energy. Metal oxides are considered among most promising electrochromic films use in because relatively good physical chemical stabilities. After nearly half a century development, practical application metal oxide-based realized. This review presents an evaluation performance summarizes five strategies that be used to enhance properties oxides. These include controlling oxygen vacancy concentration, doping aliovalent ions, morphology, selecting optimal electrolyte, crystallinity. also investigates metal-oxide-based ESWs.

Language: Английский

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