Flexible Zn‐ion Electrochromic Batteries with Multiple‐color Variations

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(14)

Опубликована: Фев. 9, 2024

Electrochromic batteries as emerging smart energy devices are highly sought after owing to their real-time monitoring through visual color conversion. However, large-scale applicability is hindered by insufficient capacity, inadequate cycling stability, and limited variation. Herein, a flexible Zn-ion electrochromic battery (ZIEB) was assembled with sodium vanadate (VO

Язык: Английский

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

Advanced Materials, Год журнала: 2024, Номер 36(35)

Опубликована: Июнь 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

Язык: Английский

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Co-sputtering construction of Gd-doped WO3 nano-stalagmites film for bi-funcional electrochromic and energy storage applications

Chemical Engineering Journal, Год журнала: 2024, Номер 487, С. 150615 - 150615

Опубликована: Март 22, 2024

Язык: Английский

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Multivalent‐Ion Electrochromic Energy Saving and Storage Devices

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Янв. 4, 2024

Abstract Electrochromic devices (ECDs) show promising applications in various fields including energy‐saving smart windows, energy‐recycling batteries/supercapacitors, displays, thermal management, etc. Compared to monovalent cations (H + , Li Na and K ), multivalent‐ion carriers (Mg 2+ Ca Zn Al 3+ ) can enable the ECDs with high optical contrast, capability, attractive long‐term stability because of multiple‐electron transfer redox. Additionally, Mg ‐based assembled metal anodes are exploited for EC electronics, mirrors, flexible devices, Attempts develop be traced 2013. However, since 2017, research activity this field has surged world. Despite fascinating achievements, there is still a long way from their maturity due challenges related limited electrode materials electrolytes, as well obscure redox mechanisms. This review aims discuss 1) mechanisms multivalent ions, 2) advantageous functionalities ECDs, 3) strategies developed exploring materials, ECD structures. future perspectives remaining corresponding developing designed discussed.

Язык: Английский

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

Advanced Science, Год журнала: 2024, Номер 11(14)

Опубликована: Фев. 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.

Язык: Английский

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

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(14), С. 5459 - 5467

Опубликована: Март 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.

Язык: Английский

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Optical‐Cavity‐Incorporated Colorful All‐Solid‐State Electrochromic Devices for Dual Anti‐Counterfeiting

Advanced Materials, Год журнала: 2024, Номер 36(28)

Опубликована: Апрель 25, 2024

The fusion of electrochromic technology with optical resonant cavities presents an intriguing innovation in the field. However, this is mainly achieved liquid electrolyte-based or sol-gel devices, but not all-solid-state which have broader industrial applications. Here, a new device demonstrated metal-dielectric-metal (MDM) cavity, can achieve strong thin-film interference effects through resonance, enabling to unique structural colors that rarely appeared reported such as yellow green, purple, and light red. color gamut be further expanded due adjustable constants layer. What more, exhibits remarkable cycling stability (maintaining 84% modulation capability after 7200 cycles), rapid switching time (coloration 2.6 s bleaching 2.8 s), excellent memory effect (only increasing by 13.8% almost 36 000 s). In addition, exquisite design has dual-responsive anti-counterfeiting based on voltage angle, demonstrating powerful device.

Язык: 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, Год журнала: 2024, Номер 495, С. 153692 - 153692

Опубликована: Июль 2, 2024

Язык: Английский

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Unraveling chromism-induced marvels in energy storage systems

Progress in Materials Science, Год журнала: 2024, Номер unknown, С. 101374 - 101374

Опубликована: Сен. 1, 2024

Язык: Английский

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Electrochromism via reversible electrodeposition of solid iodine

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 16, 2025

Electrochromic materials were discovered in the 1960s when scientists observed reversible changes between light and dark states WO3 thin films under different voltages. Since then, researchers have identified various electrochromic material systems, including transition metal oxides, polymer materials, small molecules. However, phenomenon has rarely been non-metallic elemental substances. Herein, we propose development of iodine electrodeposition-based dynamic windows using a water-in-salt electrolyte containing ions. The unique environment solvation structure suppress dissolution shuttle effect iodine, thereby achieving reaction pathway compared to traditional electrolytes. This involves solid-liquid solid solvated iodide window demonstrates high optical contrast 76.0% with near colour neutrality excellent cycling stability. A practical 400 cm2 complementary is fabricated demonstrate good performance, contrast, colour-neutral opaque state, fast response time, uniform modulation, polarity-switchable functionality.

Язык: Английский

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