Roadmap for electrochromic smart devices: From materials engineering and architectures design to multifunctional application

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101461 - 101461

Published: Feb. 1, 2025

Language: Английский

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Nanostructured Quasiplanar Heterointerface for a Highly Stable and Ultrafast Switching Flexible Inorganic Electrochromic Smart Window

Nano Letters, Journal Year: 2025, Volume and Issue: 25(6), P. 2342 - 2349

Published: Jan. 31, 2025

Electrochromic (EC) technology can adjust optical properties under electrical stimulation with broad applications in smart windows, displays, and camouflage. However, significant challenges remain developing inorganic EC films high durability, rapid response, mechanical flexibility due to intrinsic brittleness dense microstructure. Herein, a nanostructured quasiplanar heterointerface (Q-PHI) is first introduced into the electrode/EC interlayer realize robust, ultrafast switching tungsten trioxide (WO3) film. The 200 nm-thick Q-PHI WO3 film exhibits remarkable performance, including large contrast (81.8% 83.4% at 700 1500 nm), of 2.4 1.8 s, excellent stability (10,000 cycles 21.3% optical-contrast loss). A large-area (20 × 15 cm2) flexible window also successfully achieved. mechanism lies intense built-in electric field strong interfacial bonding induced by unique longitudinal gradient distribution, greatly enhancing electron/ion transport kinetics, surface ion adsorption, durability.

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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Layer-by-Layer-Assembled Polyaniline/MXene Thin Film and Device for Improved Electrochromic and Energy Storage Capabilities

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(20), P. 12492 - 12502

Published: Oct. 9, 2024

Polyaniline (PANI) is an attractive electrochromic and storage material due to its reversible sustainable electrochemical redox processes. However, the insufficient surface area excessive charge intercalation after long-term cycling results in limited capacitance unsatisfactory stability. In this work, we demonstrate innovative method increase PANI's energy performance by incorporating MXene, enhance activity reveal more active areas of ion/electron intercalation/deintercalation transfer. The hydrogen bonds formed between N–H, C–H, C–N PANI −OH −O functional terminations MXene further interface interaction. With substantial optical transmittance modulation capacitance, excellent coloration efficiency, outstanding durability, PANI/MXene thin film demonstrates exceptional color-switching characteristics. Furthermore, sandwich device with a as positive electrode zinc foil negative Zn2+ capability. This work raises possibilities for next-generation intelligent conversion technologies offers fresh perspectives on design ionic devices.

Language: Английский

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Interface engineering of SnO2 to enhance the cycle stability of WO3 and Prussian blue for complementary electrochromic smart windows and energy storage

Ceramics International, Journal Year: 2024, Volume and Issue: 50(18), P. 33630 - 33637

Published: June 13, 2024

Language: Английский

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Amorphous‐Crystalline Interface Induced Internal Electric Fields for Electrochromic Smart Window

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

Published: Sept. 30, 2024

Abstract Balancing optical modulation and response time is crucial for achieving high coloration efficiency in electrochromic materials. Here, internal electric fields are introduced to titanium dioxide nanosheets by constructing abundant amorphous‐crystalline interfaces, ensuring large while reducing therefore improving efficiency. Aberration‐corrected high‐angle annular dark‐field scanning transmission electron microscopy (HAADF‐STEM) reveals the presence of numerous phase boundaries nanosheets. Kelvin probe force (KPFM) exhibits an intense surface potential distribution, demonstrating fields. Density functional theory (DFT) calculations confirm that heterointerfaces can generate reduce diffusion barriers lithium ions. As a result, exhibit better (35.1 cm 2 C −1 ) than pure amorphous crystalline

Language: Английский

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Heteroatom co-doping engineering endows tungsten oxide with highly efficient dual-band electrochromic performance

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161281 - 161281

Published: March 1, 2025

Language: Английский

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Unveiling the Growth of Mo-doped Tungsten Oxide Films with Modulated Orientation and Exceptional Electrochromic Performance

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106169 - 106169

Published: March 1, 2025

Language: Английский

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Electrode Materials for Flexible Electrochromics

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(7), P. 3260 - 3260

Published: April 1, 2025

Flexible electrochromic devices (ECDs) represent a distinctive category in optoelectronics, leveraging advanced materials to achieve tunable coloration under applied electric voltage. This review delves into recent advancements electrode for ECDs, with focus on silver nanowires, metal meshes, conductive polymers, carbon nanotubes, and transparent ceramics. Each material is evaluated based its manufacturing methods integration potential. The analysis highlights the prominent role of ceramics polymers due their versatility scalability, while also addressing challenges such as environmental stability production costs. Use other alternative materials, nanowires others, are presented here comparison well. Emerging hybrid systems coating techniques identified promising solutions overcome limitations regarding flexibility durability. underscores critical importance innovation enhancing performance, sustainability, application scope flexible ECDs next-generation technologies.

Language: Английский

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Room-temperature trimethylamine gas sensor with biomass carbon microtubule-grown SnO2 nanosheets for efficient assessment of fish freshness

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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