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

Wang, Junkai; Wang, Zhipeng; Zhang, Mei; Huo, Xiangtao; Guo, Min

doi:10.1016/j.cej.2024.149628

Cited by 9 publications

(1 citation statement)

References 68 publications

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“…Among transition dopants, many studies have focused on cobalt (Co) because Co ions can easily substitute titanium ions in the TiO 2 lattice structure, leading to minimal lattice distortion. This seamless integration enables Co to effectively modify the electronic structure of TiO 2 , enhancing its EC properties without compromising its structural integrity [28]. Additionally, Co doping facilitates the introduction of additional electronic states within the TiO 2 bandgap, promoting efficient charge transfer processes essential for electrochromism [29,30].…”

Section: Introductionmentioning

confidence: 99%

Cobalt Ion-Modified Titanium Oxide Nanorods: A Promising Approach for High-Performance Electrochromic Application

Morankar,

Amate,

Teli

et al. 2024

Coatings

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The development of novel cathodic materials with tailored nanostructures is crucial for the advancement of electrochromic devices. In this study, we synthesized cobalt-doped titanium dioxide (Ti-Co) thin films using a facile hydrothermal method to investigate the effects of cobalt doping on their structural, morphological, and electrochromic properties. Comprehensive characterization techniques, including X-ray diffraction and Raman analysis, confirmed the highly crystalline nature of the Ti-Co thin films, with specific Raman bands indicating distinct modifications due to cobalt incorporation. The TiO2 nanorods, optimally doped with cobalt (TC-3), demonstrated enhanced charge transport and mobility, significantly improving the electrochromic performance. Among the various compositions studied, the TC-3 sample exhibited superior lithium-ion accommodation, achieving an optical modulation of 73.6% and a high coloration efficiency of 81.50 cm2/C. It also demonstrated excellent electrochromic stability, maintaining performance for up to 5000 s of coloring/bleaching cycles. These results confirm the beneficial impact of cobalt doping on the structural and functional properties of the host material. Furthermore, the practical effectiveness of the TC-3 thin film was validated through the fabrication of an electrochromic device, which showed efficient coloration and bleaching capabilities. This comprehensive research enhances the understanding and functionality of Ti-Co nanorod architectures, highlighting their promising potential for advanced electrochromic applications.

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Section: Introductionmentioning

confidence: 99%

Cobalt Ion-Modified Titanium Oxide Nanorods: A Promising Approach for High-Performance Electrochromic Application

Morankar,

Amate,

Teli

et al. 2024

Coatings

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Visible‐Near Infrared Independent Modulation of Hexagonal WO₃ Induced by Ionic Insertion Sequence and Cavity Characteristics

Wang,

Cui

et al. 2024

Advanced Materials

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Dual‐band electrochromic materials have attracted significant attention due to their ability to independently control sunlight and solar heat. However, these materials generally exhibit notable limitations, and the mechanisms for their dual‐band independent regulation remain poorly understood. Here, the visible‐NIR‐independent regulation capabilities of hexagonal WO3 (h‐WO3) are introduced for the first time. A structure‐activity relationship that perfectly links the microscopic ion insertion sequence and cavity characteristics to the macroscopic dual‐band electrochromic properties is established. The progressive ion intercalation process and the distinctive optical activity of the cavities are keys for enabling h‐WO3 to independently modulate “bright,” “cool,” and “dark” modes. Notably, h‐WO3 demonstrates superior dual‐band electrochromic performance with a broadband full shielding effect from 550 to 2000 nm, achieving the widest full shielding band in dual‐band electrochromic studies. Additionally, h‐WO3 shows a high discharge capacity of 270.9 mAh m−2 at 0.25 A m−2, and requires only 49.1 and 209.7 mAh m−2 to complete a full round‐trip switch between “bright‐cool” and “bright‐dark” modes, respectively. The constructed device offers a dynamic temperature control range of up to 10.5 °C and supports a maximum voltage of 2.86 V, underscoring its considerable potential for practical applications and energy efficiency.

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Bioinspired on-off switchable multi-level responsiveness for ultralong fire-warning, super-sensitive solvent/humidity and light-driven behaviors

Yang,

Lv,

Zheng

et al. 2024

Chemical Engineering Journal

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

Cited by 9 publications

References 68 publications

Cobalt Ion-Modified Titanium Oxide Nanorods: A Promising Approach for High-Performance Electrochromic Application

Cobalt Ion-Modified Titanium Oxide Nanorods: A Promising Approach for High-Performance Electrochromic Application

Visible‐Near Infrared Independent Modulation of Hexagonal WO₃ Induced by Ionic Insertion Sequence and Cavity Characteristics

Bioinspired on-off switchable multi-level responsiveness for ultralong fire-warning, super-sensitive solvent/humidity and light-driven behaviors

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

Cited by 9 publications

References 68 publications

Cobalt Ion-Modified Titanium Oxide Nanorods: A Promising Approach for High-Performance Electrochromic Application

Cobalt Ion-Modified Titanium Oxide Nanorods: A Promising Approach for High-Performance Electrochromic Application

Visible‐Near Infrared Independent Modulation of Hexagonal WO3 Induced by Ionic Insertion Sequence and Cavity Characteristics

Bioinspired on-off switchable multi-level responsiveness for ultralong fire-warning, super-sensitive solvent/humidity and light-driven behaviors

Contact Info

Product

Resources

About

Visible‐Near Infrared Independent Modulation of Hexagonal WO₃ Induced by Ionic Insertion Sequence and Cavity Characteristics