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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Design of robust fluorinated interpenetrating poly(thieno[3,2-b]thiophene) network for highly stable flexible electrochromic-supercapacitor devices

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153692 - 153692

Published: July 2, 2024

Language: Английский

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PANI doped with carbon quantum dots for the asymmetric high-performance solid-state electrochromic supercapacitor

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 633, P. 236407 - 236407

Published: Feb. 4, 2025

Language: Английский

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Advanced Dual‐Band Smart Windows: Inorganic All‐Solid‐State Electrochromic Devices for Selective Visible and Near‐Infrared Modulation

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 30, 2024

Abstract Dual‐band electrochromic smart windows (DESWs), capable of actively and selectively modulate visible (VIS) light near‐infrared (NIR) heat, have emerged as a practical technology for enhancing user comfort reducing building energy consumption. However, the design development DESWs remain significant challenge due to difficulty in obtaining suitable materials high‐durability electrolytes. Here, first all‐solid‐state DESW based on an orthorhombic oxygen‐deficient tungsten oxide (o‐WO 3‐ x ) film is presented. Benefiting from synergistic effects efficient oxygen‐vacancy‐enhanced charge transfer process secure pathway enabled by crystal structure, o‐WO showcases remarkable dual‐band properties, including selective modulation VIS NIR large optical (89.1%), rapid response time ( t b / c = 6.8/17.9 s), high coloration efficiency (155.92 cm 2 C −1 ), ultrastable cyclic performance (8000 cycles) even acidic aqueous electrolyte. Furthermore, incorporating deliver stable with excellent thermal regulation energy‐saving capabilities. These findings underscore considerable potential films their decreasing

Language: Английский

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Copper Vanadium Oxide Yolk–Shell Microspheres with Excellent Capacitance and Cycling Performance for Electrochromic Supercapacitor

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(32), P. 42502 - 42512

Published: Aug. 3, 2024

Vanadium pentoxide (V2O5) is considered a promising material for electrochromic supercapacitors due to its rich color transitions and excellent electrochemical capacity. However, V2O5 exhibits low electrical conductivity, volume changes dramatically during charge–discharge cycles, leading structural collapse poor long-term cyclability. These issues have hindered the development application of V2O5. In this study, copper vanadium oxide yolk–shell microspheres (CVO) were synthesized through one-step solvent heat treatment with an annealing process. With doping element, capacitance, cyclic stability CVO significantly enhanced. Subsequently, sphere-wire network structure was formed by blending Na2V6O16·3H2O nanowires (NVO), resulting in formation CVO/NVO composites. The three-dimensional efficiently facilitates acquisition additional redox sites strengthens material-to-substrate bonding. Under combined influence these favorable factors, achieved high specific capacitance 39.2 mF cm–2, retention 84% after 7500 cycles at current density 0.7 mA cm–2. fully inorganic solid-state supercapacitor (ECSC), assembled on basis CVO/NVO, demonstrates vivid clearly distinguishable change (ΔE* = 37). Even more impressive energy storage capacity (18.4 mF·cm–2) cycling (up 89% 10,000 cycles) exhibited devices. key performances are superior those most previously reported V2O5-based ECSCs, opening avenue

Language: Английский

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Enhanced electro-optical properties of polymer dispersed liquid crystals doped with functional nanofibers for applications of efficient smart windows and advanced anti-counterfeiting

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 155675 - 155675

Published: Sept. 13, 2024

Language: Английский

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Bridging to Commercialization: Record‐Breaking of Ultra‐Large and Superior Cyclic Stability Tungsten Oxide Electrochromic Smart Window

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Abstract Electrochromic smart windows (ESWs) can significantly reduce energy consumption in buildings, but their cost‐effective, large‐scale production remains a challenge. In this study, the instability of black phosphorus is leveraged to induce growth tungsten oxide film through its decomposition process, inspired by 2D material‐assisted situ (TAIG) method. This approach results preparation large‐scale, high‐performance WO 3‐x ·nH 2 O ( n < 2) films. Characterization techniques and DFT calculations confirm efficient regulation structural water oxygen vacancies during TAIG preparation. The films exhibit excellent electrochromic (EC) properties, including high transmittance modulation (74.2%@1100 nm), fast switching time t c = 5.5 s, b 3.8 s), coloration efficiency (124.7 cm C −1 ), superior cyclic stability (transmittance retained 94.7% after 20 000 cycles). Ultra‐large are prepared via simple immersion fabricated into large‐area ESW under facile laboratory conditions, demonstrating economic practical feasibility industrial‐scale production. Operated intelligent control circuit, exhibits remarkable EC properties research represents milestone improving performance ESWs, bridging gap commercialization technology.

Language: Английский

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A Wide‐Temperature Adaptive Electrochromic Device Based on a Poly(vinyl alcohol)/Poly(acrylic acid) Gel Electrolyte

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

Abstract As a promising energy‐saving technology, electrochromic technology has been widely investigated for practical applications. However, there is relatively few research about the applications under certain extreme climatic conditions since gel electrolytes often occur freezing and volatilizing. In this work, poly(vinyl alcohol)/poly(acrylic acid) (PVA/PAA) electrolyte with good anti‐freezing heat‐resistance performance developed. Utilizing hydrated tungsten oxide (WO 3 · x H 2 O) polyaniline (PANI) as materials PVA/PAA electrolyte, WO O/PVA/PAA‐ethylene glycol (EG)‐H O/PANI device O/PAEH/PANI ECD) obtained, which can work efficiently at wide operating temperatures from −20 to 60 °C. The multiple reversible color changes, large optical modulation of 66.2% 600 nm, high coloration efficiency 386.0 cm C −1 , fast responses (with coloration/bleaching times 1.3/1.1 s), well excellent cyclic stability (82.0% initial still retained after 2100 cycles). This reveals potential application prospects PAEH in conditions.

Language: Английский

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A Multi‐Color Four‐Mode Electrochromic Window for All‐Season Thermal Regulation in Buildings

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 21, 2024

Abstract Electrochromic windows can control the amount of sunlight entering buildings, thus enabling thermal regulation and offering a significant opportunity to reduce building energy consumption. However, current electrochromic encounter difficulties with multi‐color fully independent adjustment visible light near‐infrared heat. Herein, this work introduces an advanced four‐mode dual‐band smart window (DESW) that not only showcases various color transformations but also independently manages heat from solar radiation, providing year‐round for buildings. This device features zinc anode Prussian blue analogues tungsten oxide film electrodes. Its optical state superposition effect allows range (yellow, orange, green, black), enhancing visual appeal four distinct states precise transmittance. Simulation results show achieves greater efficiency than commercial glass in most global climates throughout year. Moreover, generated by DESW be used power low‐energy devices within building, further decreasing overall research opens up extensive possibilities design supports development green contributing carbon neutrality sustainable development.

Language: Английский

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