Preparation of WO3 gel electrochromic device by simple two-step method

Liu, Yangbiao; Cai, Xuesong; Xiao, Xiudi; Wang, Jixi; Sheng, Guizhang; Xu, Gang

doi:10.1016/j.mtcomm.2021.103090

Cited by 6 publications

(4 citation statements)

References 41 publications

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“…4(b), the optical modulation rate Δ T is up to 87.89% at wavelength 633 nm, which is higher than many reported electrochromic devices. 10,29–31 As illustrated in Table 1, the optical modulation has reached 90.28% around wavelength 749 nm. Fig.…”

Section: Resultsmentioning

confidence: 97%

Enhanced electrochromic properties of WO₃/ITO nanocomposite smart windows

Yuan

Liu

et al. 2023

RSC Adv.

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Section: Resultsmentioning

confidence: 97%

Enhanced electrochromic properties of WO₃/ITO nanocomposite smart windows

Yuan

Liu

et al. 2023

RSC Adv.

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“…16 However, due to their limitations, such as low stability and long switching times, they have not been used for many largescale applications. 17,18 Despite excellent optical properties and high efficiency, amorphous WO 3 still has long response time, poor electrochromic repeatability, and instability. [19][20][21][22] On the other hand, transition metal dichalcogenides (TMDCs) have recently attracted much interest due to their high electrical conductivity, large surface area, high optical transmittance, and chemical stability.…”

Section: Supplementary Materials For This Article Is Available Onlinementioning

confidence: 99%

Tungsten Disulfide Wrapped WO₃ Based Thin Film Transparent Electrode Material for Electrochromic Device Application

Sharma

Nihal²,

Sharma³

et al. 2023

J. Electrochem. Soc.

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We report the detailed investigation of tungsten disulfide (WS2) wrapped tungsten trioxide (WO3) nanocomposites as electrode materials for electrochromic devices. The WS2/WO3 nanocomposite was prepared by exfoliation of WS2 in WO3, where WO3 was prepared by acidic co-precipitation technique. X-ray diffraction spectra were used to study the structural properties of the prepared materials. The results show that agglomeration due to pinning of grain boundaries by WS2 leads to an increase in the crystallite size of the nanocomposites, confirming the formation of WS2/WO3. Field-emission scanning electron microscopy and high-resolution tunnelling electron microscpy were used to study the nanocomposites morphology. The results show that the relative distribution of nanoparticles is more uniform compared to WO3 after the addition of WS2. The shape of WO3 changes from spherical to square nanosheets with good dispersion. The electrochemical properties of the prepared samples were investigated by chronoamperometry, charge/discharge ,and cyclic voltammetry. The lower peak separation between oxidation and reduction resulted from the fact that the peaks of the anodic and cathodic current densities of the nanocomposite (WS2/WO3) were shifted more to higher and lower potentials, respectively. This suggests faster charge transfer kinetics. UV/Vis spectroscopy was used to investigate the electrochromic and optical properties of the fabricated ECDs. The WS2/WO3-based ECDs exhibit a high colouring efficiency of 61 cm2C-1. The study shows that ECDs based on WS2/WO3 exhibit better electrochromic performance compared to WO3 ECDs

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“…) 2‐6 have been used to fabricate ECD as electroactive materials. Due to its low price and unique characteristics, tungsten trioxide (WO 3 ) is the most attractive material among these transition metal oxides, especially in the form of thin films for advanced technological applications 7‐11 . The tungsten is in its 6 + valence state in the bleached state (WO 3 ).…”

Section: Introductionmentioning

confidence: 99%

“…Due to its low price and unique characteristics, tungsten trioxide (WO 3 ) is the most attractive material among these transition metal oxides, especially in the form of thin films for advanced technological applications. [7][8][9][10][11] The tungsten is in its 6 + valence state in the bleached state (WO 3 ). When an electron is introduced into the WO 3 layer, one of the tungsten atoms is partially reduced to the 5 + state.…”

mentioning

confidence: 99%

Synthesis and characterization of MoS ₂ / WO ₃ nanocomposite for electrochromic device application

Sharma

Nihal

Sharma

et al. 2022

Intl J of Energy Research

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In this work, WO 3 nanopowder was synthesized by an acidic co-precipitation method using sodium tungstate, nitric acid, and distilled water as precursors, while molybdenum disulfide (MoS 2 )/tungsten trioxide (WO 3 ) nanocomposite was prepared by exfoliation of MoS 2 in WO 3 at different concentrations of MoS 2 on WO 3 . All materials were analysed for their structural characteristics using X-ray diffraction (XRD) spectra. The XRD spectra confirm the formation of prepared samples. The morphology of the nanocomposites was investigated by field emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM). FESEM and HRTEM show that the addition of 2% MoS 2 has an insignificant effect on the morphology of WO 3 but when the MoS 2 concentration is increased to 4%, the particles' edges agglomerate and combine to create layered nanostructures that resemble flowers and join together to form a sphere. The electrochemical performance of all prepared samples was investigated using charge/discharge, chronoamperometry, and cyclic voltammetry. The electrochemical test results show that the electrochemical properties increase after the addition of MoS 2 in WO 3 due to the large active surface area. At ±1.5 V operating voltage, The electrochromic and optical properties of the prepared thin films were investigated using UV/Vis spectroscopy. The MSW2 nanocomposite exhibits the highest optical transmittance of 84% in the bleached state and 25% in the coloured state with a colouration efficiency of 67 cm 2 C À1 . The MSW2 nanocomposite retains a 97% colouration efficiency after 100 cycles. The electrochromic studies show that MoS 2 /WO 3 nanocomposites exhibit good results at low MoS 2 contents (ie, up to 2%). When the proportion of MoS 2 in WO 3 is increased (above 2%), the electrochromic performance decreases due to the deterioration of the transmittance (T%) of the nanocomposite.

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Preparation of WO3 gel electrochromic device by simple two-step method

Cited by 6 publications

References 41 publications

Enhanced electrochromic properties of WO₃/ITO nanocomposite smart windows

Enhanced electrochromic properties of WO₃/ITO nanocomposite smart windows

Tungsten Disulfide Wrapped WO₃ Based Thin Film Transparent Electrode Material for Electrochromic Device Application

Synthesis and characterization of MoS ₂ / WO ₃ nanocomposite for electrochromic device application

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Preparation of WO3 gel electrochromic device by simple two-step method

Cited by 6 publications

References 41 publications

Enhanced electrochromic properties of WO3/ITO nanocomposite smart windows

Enhanced electrochromic properties of WO3/ITO nanocomposite smart windows

Tungsten Disulfide Wrapped WO3 Based Thin Film Transparent Electrode Material for Electrochromic Device Application

Synthesis and characterization of MoS 2 / WO 3 nanocomposite for electrochromic device application

Contact Info

Product

Resources

About

Enhanced electrochromic properties of WO₃/ITO nanocomposite smart windows

Enhanced electrochromic properties of WO₃/ITO nanocomposite smart windows

Tungsten Disulfide Wrapped WO₃ Based Thin Film Transparent Electrode Material for Electrochromic Device Application

Synthesis and characterization of MoS ₂ / WO ₃ nanocomposite for electrochromic device application