Fast fabrication of a WO3·2H2O thin film with improved electrochromic properties

Xie, Zhong; Gao, Lina; Liang, Bo; Wang, Xianfu; Gui, Chao; Liu, Zhe; Chao, Junfeng; Chen, Di; Shen, Guozhen

doi:10.1039/c2jm33622g

Cited by 75 publications

(53 citation statements)

References 43 publications

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“…The SEM images reveal that the substrate surface is well covered with a large number of fine grains with compact growth. Similar morphology was observed by Xie et al [25]. The surface morphology was further studied by Atomic force microscopy (AFM).…”

Section: Morphological Studiessupporting

confidence: 60%

Photoelectrocatalytic degradation of methyl red using sprayed WO3 thin films under visible light irradiation

Hunge

Mohite

Kumbhar

et al. 2015

J Mater Sci: Mater Electron

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WO 3 thin films have been deposited onto glass and FTO coated glass substrates using simple chemical spray pyrolysis technique. The effect of solution concentration on the photoelectrochemical (PEC), structural, morphological and photoelectrocatalytic properties has been investigated. The structure and morphology of WO 3 photoelectrodes are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The PEC study shows that both open circuit voltage (V oc ) and short circuit current (I sc ) at the optimized solution concentration (0.125 M) are relatively maximum (I sc = 0.62 mA and V oc = 0.58 V). XRD study reveals that the films are polycrystalline in nature with monoclinic crystal structure. SEM images show that the substrate surface is well covered with uniform, compact and fine grain like morphology. The AFM image shows the rough nature of the film. Photoelectrocatalytic degradation of methyl red dye in aqueous solutions is studied. The end result shows that the degradation percentage of methyl red using WO 3 photoelectrode has reached 97 % under visible light illumination after 160 min. The amount of mineralization is confirmed by COD and TOC analysis.

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Section: Morphological Studiessupporting

confidence: 60%

Photoelectrocatalytic degradation of methyl red using sprayed WO3 thin films under visible light irradiation

Hunge

Mohite

Kumbhar

et al. 2015

J Mater Sci: Mater Electron

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“…However, because of the complex fabrication involved in realizing integration and the challenges of achieving multiple functions, until now, only a few simple integrated energy devices that just simultaneously realize both energy conversion and energy storage, or as the power source for other electronic devices, such as photodetectors and sensors, have been successfully explored [23,67]. In the past few years, integrated energy system with planar structures, such as selfcharged LIBs [85,86], self-charged SCs [87,88], LIBs or SC powered photodetectors [89,90], and smart windows [91][92][93], have been successfully designed and demonstrated. As for integrated energy systems with a fiber structure, the simplest integration may be connecting fiber energy storage devices with other electronics by the wires.…”

Section: Flexible Fiber Integrated Energy Systemmentioning

confidence: 99%

Flexible fiber energy storage and integrated devices: recent progress and perspectives

2015

Self Cite

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Flexible fiber-shaped energy storage devices have been studied and developed intensively over the past few years to meet the demands of modern electronics in terms of flexibility, weavability and being lightweight. In this review, fiber electrodes and flexible fiber energy storage devices containing solidstate supercapacitors (SCs) and lithium-ion batteries (LIBs) are carefully summarized with particular emphasis on their electrode fabrication, structure design and flexibility. In addition, emerging wireshaped integrated energy systems, combined energy storage and solar cells, as well as other electronic devices to realize self-charging and self-powered integrated systems are specifically highlighted.

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“…Besides anhydrous tungsten oxide, several tungsten oxide hydrates have gradually attracted more attention, such as WO 3 ·2H 2 O (dihydrate), WO 3 ·H 2 O (monohydrate), WO 3 ·0.5H 2 O (hemihydrate) and WO 3 ·0.33H 2 O2829303132. Judeinstein and Marcel have reported that water has a beneficial effect on lithium insertion kinetics into tungsten oxide3334.…”

mentioning

confidence: 99%

High-performance flexible electrochromic device based on facile semiconductor-to-metal transition realized by WO3·2H2O ultrathin nanosheets

Lin

Zhang

Zhou

et al. 2013

Sci Rep

249

187

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Ultrathin nanosheets are considered as one kind of the most promising candidates for the fabrication of flexible electrochromic devices (ECDs) due to their permeable channels, high specific surface areas, and good contact with the substrate. Herein, we first report the synthesis of large-area nanosheets of tungsten oxide dihydrate (WO3·2H2O) with a thickness of only about 1.4 nm, showing much higher Li+ diffusion coefficients than those of the bulk counterpart. The WO3·2H2O ultrathin nanosheets are successfully assembled into the electrode of flexible electrochromic device, which exhibits wide optical modulation, fast color-switching speed, high coloration efficiency, good cyclic stability and excellent flexibility. Moreover, the electrochromic mechanism of WO3·2H2O is further investigated by first-principle density functional theory (DFT) calculations, in which the relationship between structural features of ultrathin nanosheets and coloration/bleaching response speed is revealed.

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Fast fabrication of a WO3·2H2O thin film with improved electrochromic properties

Cited by 75 publications

References 43 publications

Photoelectrocatalytic degradation of methyl red using sprayed WO3 thin films under visible light irradiation

Photoelectrocatalytic degradation of methyl red using sprayed WO3 thin films under visible light irradiation

Flexible fiber energy storage and integrated devices: recent progress and perspectives

High-performance flexible electrochromic device based on facile semiconductor-to-metal transition realized by WO3·2H2O ultrathin nanosheets

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