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

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 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.

Язык: Английский

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Review on amorphous WO3 for electrochromic devices: Structure, optimization strategies and applications

Materials Today Chemistry, Год журнала: 2025, Номер 43, С. 102513 - 102513

Опубликована: Янв. 1, 2025

Язык: Английский

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Anodized WO₃–W Composite Electrochromic Films for Broadly Tunable Multicolor Displays

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 24, 2025

Язык: Английский

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Electrochromic thin films of tungsten oxide with high-exposure (002) crystal faces doped and modulated with cerium acetate

Nanoscale, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

A cerium acetate-doped WO 3 film was prepared, forming Ce–O bonds that increase (002) face exposure, while acetate ions improve structural stability and electrochemical properties, enhancing the electrochromic effect.

Язык: Английский

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Revealing the Mechanism of Ni Vacancies on Ion Storage, Diffusion Kinetics, and Electrochromic Performance of Nickel Oxide Electrodes

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Solar radiation can be dynamically regulated by the electrochromic smart window, showing great potential in reducing building energy consumption. As one of most paramount inorganic materials, NiO remains elusive intricacies process, particularly regarding functional mechanisms defects. Here, mechanism Ni vacancies (V ) on ionic storage, diffusion kinetics, and performance are systematically investigated. The active V provides ion storage sites promotes transport lithium (Li + forming channels, increasing capacity from 2.12 to 4.90 mC cm −2 . By introducing sub‐gap absorptions, increases NiO's optical modulation 14.4% 30.3% with excellent cyclic stability (retain 87.4% after 4000 cycles). In contrast, nonactive barely contributes because a high barrier, causing low transmittance bleached state. Furthermore, enables devices exhibit superior response speed, but negatively affects transparency These results provide valuable guidance for high‐quality electrodes through defect engineering developing high‐performing NiO‐based devices.

Язык: Английский

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Biphasic WO3 Nanostructures via Controlled Crystallization: Achieving High-Performance Electrochromism Through Amorphous/Crystalline Heterointerface Design

Crystals, Год журнала: 2025, Номер 15(4), С. 324 - 324

Опубликована: Март 28, 2025

WO3 electrochromic films have emerged as potential candidates for smart windows due to their cost-effectiveness, fast switching speed, and strong chemical stability. However, the inherent contradiction between high coloring efficiency of amorphous cycling durability crystalline remains a critical challenge in practical applications. This study proposes an innovative heterostructure engineering strategy, achieving precise control amorphous/crystalline bilayer heterointerface (148 nm a-WO3/115 c-WO3) first time through phase boundary regulation, using well-controlled magnetron sputtering post-deposition thermal annealing processes. Multimodal characterization XRD, XPS, SEM indicates that optimizes performance dynamic charge transfer mechanism structural synergistic effects: optimized structure achieves 76.57% optical modulation (at 630 nm) under −1.0 V maintains ΔT retention rate 45.02% after 600 cycles, significantly outperforming single (8.34%) (14.34%). XPS analysis reveals equilibrium involving W5+/Li+ at interface, Li+ diffusion coefficient (D0 = 4.29 × 10−10 cm2/s) confirms layer dominates rapid ion transport, while matrix enhances stability its ordered structure. offers new paradigm balancing longevity devices, with compatibility magnetic promoting industrialization process large-area windows.

Язык: Английский

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Electric field-assisted synthesis of multivalent WO3-x coupling with carbon nanotubes for promoting (photo-)electrocatalytic oxygen evolution reaction

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 127, С. 903 - 911

Опубликована: Апрель 18, 2025

Язык: Английский

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Density Gradient of Oxygen Vacancies in Post-treated Blue WO3-x Nanophotocatalyst: Optical Properties, Electron Immigration and Photocatalytic Activity

Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 106543 - 106543

Опубликована: Апрель 1, 2025

Язык: Английский

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Aqueous Electrolyte-Based Electrochromic Devices with Co-Sputtered Ti-Doped WO₃ Amorphous Films

Material Sciences, Год журнала: 2025, Номер 15(05), С. 1154 - 1164

Опубликована: Янв. 1, 2025

Язык: Английский

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Unraveling the monomer conjugation length effect on the optoelectronic performances of thiophene-EDOT hybrid electrochromic polymers

Polymer, Год журнала: 2024, Номер unknown, С. 127999 - 127999

Опубликована: Дек. 1, 2024

Язык: Английский

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