Study on electrochromic-fluorescence switching performance of film based on silicomolybdotungstate and silica nanoparticles doped with negative charged dye

Fu, Zhijing; Qu, Zhengyi; Tian, Yu; Bi, Lei

doi:10.1016/j.jelechem.2019.113623

Cited by 3 publications

(1 citation statement)

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“…However, POM materials tend to aggregate or stack to form dense structures, which can hinder ion diffusion and affect their electrochemical properties. To overcome this issue, the incorporation of POMs into nanostructures or composite materials has been investigated to increase their surface areas [15]. For example, L et al [16] prepared graphene oxide/W 18 O 49 nanorod (rGO-WNd) composites through the high-temperature thermal reduction of ammonium tungstate and graphene oxide (GO).…”

Section: Introductionmentioning

confidence: 99%

Vanadium-Substituted Dawson-Type Polyoxometalate–TiO2 Nanowire Composite Film as Advanced Cathode Material for Bifunctional Electrochromic Energy-Storage Devices

Chu

Liu

et al. 2022

Molecules

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Polyoxometalates (POMs) demonstrate potential for application in the development of integrated smart energy devices based on bifunctional electrochromic (EC) optical modulation and electrochemical energy storage. Herein, a nanocomposite thin film composed of a vanadium-substituted Dawson-type POM, i.e., K7[P2W17VO62]·18H2O, and TiO2 nanowires were constructed via the combination of hydrothermal and layer-by-layer self-assembly methods. Through scanning electron microscopy and energy-dispersive spectroscopy characterisations, it was found that the TiO2 nanowire substrate acts as a skeleton to adsorb POM nanoparticles, thereby avoiding the aggregation or stacking of POM particles. The unique three-dimensional core−shell structures of these nanocomposites with high specific surface areas increases the number of active sites during the reaction process and shortens the ion diffusion pathway, thereby improving the electrochemical activities and electrical conductivities. Compared with pure POM thin films, the composite films showed improved EC properties with a significant optical contrast (38.32% at 580 nm), a short response time (1.65 and 1.64 s for colouring and bleaching, respectively), an excellent colouration efficiency (116.5 cm2 C−1), and satisfactory energy-storage properties (volumetric capacitance = 297.1 F cm−3 at 0.2 mA cm−2). Finally, a solid-state electrochromic energy-storage (EES) device was fabricated using the composite film as the cathode. After charging, the constructed device was able to light up a single light-emitting diode for 20 s. These results highlight the promising features of POM-based EES devices and demonstrate their potential for use in a wide range of applications, such as smart windows, military camouflage, sensors, and intelligent systems.

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Section: Introductionmentioning

confidence: 99%

Vanadium-Substituted Dawson-Type Polyoxometalate–TiO2 Nanowire Composite Film as Advanced Cathode Material for Bifunctional Electrochromic Energy-Storage Devices

Chu

Liu

et al. 2022

Molecules

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The effect of electrolytes on the electrochromic performance of nickel-substituted tungstophosphate and TiO₂ nanowire composite films

Liu

Chu

et al. 2021

New J. Chem.

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Ultrasensitive Electrochemical Sensor Based on β-Cyclodextrin–Polyaniline–Phosphomolybdic Acid Matrix for the Detection of Ascorbic Acid

Zhou

2022

Russ J Appl Chem

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Study on electrochromic-fluorescence switching performance of film based on silicomolybdotungstate and silica nanoparticles doped with negative charged dye

Cited by 3 publications

References 44 publications

Vanadium-Substituted Dawson-Type Polyoxometalate–TiO2 Nanowire Composite Film as Advanced Cathode Material for Bifunctional Electrochromic Energy-Storage Devices

Vanadium-Substituted Dawson-Type Polyoxometalate–TiO2 Nanowire Composite Film as Advanced Cathode Material for Bifunctional Electrochromic Energy-Storage Devices

The effect of electrolytes on the electrochromic performance of nickel-substituted tungstophosphate and TiO₂ nanowire composite films

Ultrasensitive Electrochemical Sensor Based on β-Cyclodextrin–Polyaniline–Phosphomolybdic Acid Matrix for the Detection of Ascorbic Acid

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Study on electrochromic-fluorescence switching performance of film based on silicomolybdotungstate and silica nanoparticles doped with negative charged dye

Cited by 3 publications

References 44 publications

Vanadium-Substituted Dawson-Type Polyoxometalate–TiO2 Nanowire Composite Film as Advanced Cathode Material for Bifunctional Electrochromic Energy-Storage Devices

Vanadium-Substituted Dawson-Type Polyoxometalate–TiO2 Nanowire Composite Film as Advanced Cathode Material for Bifunctional Electrochromic Energy-Storage Devices

The effect of electrolytes on the electrochromic performance of nickel-substituted tungstophosphate and TiO2 nanowire composite films

Ultrasensitive Electrochemical Sensor Based on β-Cyclodextrin–Polyaniline–Phosphomolybdic Acid Matrix for the Detection of Ascorbic Acid

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The effect of electrolytes on the electrochromic performance of nickel-substituted tungstophosphate and TiO₂ nanowire composite films