Nanoparticulate films of WO3 and MoO3 composites for enhancing UV light electrochromic transmittance variation and energy storage applications

Wei, Chia-Chun; Wu, Tung-Han; Huang, Junwei; Young, Ben-Li; Jian, Wen‐Bin; Lin, Yuliang; Chen, Jiun‐Tai; Hsu, Chain‐Shu; Ma, Yuan‐Ron; Tsukagoshi, Kazuhito

doi:10.1016/j.electacta.2023.141897

Cited by 9 publications

(4 citation statements)

References 51 publications

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“…Implementing the combination of these bi-functional electrochromic and energy storage properties through reversible redox reactions using an active electrode material has been a logical focus for many investigations [22][23][24][25]. It would be exciting to not only utilize smart windows, but also charge capacity, which possess excellent electrochromic and energy-storage capabilities as well as displaying significant color variations [22]. The general objective is to develop energy-saving strategies to overcome challenges in response to the worldwide energy crisis.…”

Section: Electrochromic Devices (Ecds) Can Function At Low Voltages A...mentioning

confidence: 99%

New Anodic Discoloration Materials Applying Energy-Storage Electrochromic Device

Chen

Chang

2023

Materials

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We have assessed new anodic coloring materials that can be used as ion storage layers in complementary energy storage electrochromic devices (ESECDs) to enhance their electrochromic storage performance. In our study, we fabricated counter electrodes (ion storage layers) using an IrO2-doping NiO (Ir:NiO) film through cathodic arc plasma (CAP) with varying surface charge capacities. We have also investigated the influence of a MoO3-doped WO3 (Mo:WO3) film using various Ar/O2 gas flow ratios (1/4, 1/5, and 1/6, respectively). The ESECDs used in the demonstration were 10 × 10 cm2 in size and achieved an optical transmittance modulation of the Ir:NiO ESECDs (glass/ITO/ Mo:WO3/gel polymer electrolytes/ Ir:NiO/ITO/glass), with ΔT = 53.3% (from Tbleaching (66.6%) to Tcoloration (13.1%)). The ESECDs had a quick coloration time of 3.58 s, a rapid bleaching time of 1.24 s, and a high cycling durability. Furthermore, it remained at a 45% transmittance modulation level even after 3000 cycles. New anodic materials can thereby provide an alternative to traditional active materials for bi-functional electrochromic batteries.

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Section: Electrochromic Devices (Ecds) Can Function At Low Voltages A...mentioning

confidence: 99%

New Anodic Discoloration Materials Applying Energy-Storage Electrochromic Device

Chen

Chang

2023

Materials

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“…The MoO 3 films produced by these methods under high vacuum conditions and using special equipment are costly and it is also difficult to fabricate large-area films, hindering their widespread applications. For the past few years, the fabrication methods undertook a transition from a vacuum-required process to efficient and low-cost wet-chemical methods [12,13], such as the sol-gel method [14]. The sol-gel method attracts extensive attention due to its simplicity and possibility of producing large-area uniform films at low cost.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochromic Properties of Nanocrystalline Molybdenum Oxide Films Modified by Dopamine

Zhou

Yang

2023

Coatings

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Molybdenum oxide (MoO3) electrochromic (EC) materials have not been widely used at present due to relatively poor performance and inadequate research. In order to enhance the EC properties of the MoO3 to achieve the purpose of practical use, the modified nanocrystalline MoO3 films were fabricated by a cheap and simple complexation-assisted sol–gel method followed by annealing at 300 °C. In this method, dopamine (DA) is used as a structure-directing agent and the added amount of DA has a great influence on the structure and morphology and, thus, electrochemical and EC properties of the MoO3 films. Different from the pure MoO3 polycrystalline film, the film modified with a suitable amount of DA possesses a distinctive nanocrystal-embedded amorphous structure, and, thus, can achieve synergy effects of EC properties through combining the advantages of both amorphous phases and nanocrystalline. Therefore, compared with the pure MoO3 film, the modified MoO3 film shows much higher EC properties in terms of optical contrast, coloration efficiency, switching speed, and cycling stability. Moreover, a complementary type EC device with dual active layers (the modified MoO3 film and polyaniline) was fabricated and tested, and the results demonstrate the potential application of the modified MoO3 film.

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“…Implementing the combination of bi-functional electrochromic and energy storage through reversible redox reactions using an active electrode material is a logical focus for many investigations [13][14][15][16]. It would be exciting to utilize not only smart windows but also charge capacity, which Disclaimer/Publisher's Note: The statements, opinions, and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s).…”

Section: Introductionmentioning

confidence: 99%

“…2 possess excellent electrochromic and energy-storage capabilities while also displaying significant color variations [13]. Our objective is to develop energy-saving strategies to overcome challenges in response to the worldwide energy crisis.…”

Section: Introductionmentioning

confidence: 99%

New Anodic Discoloration Materials Applying Energy-Storage Electrochromic Device

Chen¹,

Chang²

2023

Preprint

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We investigated new anodic coloring materials that are used as ion storage layers in complementary energy storage electrochromic devices (ESECDs) to enhance their electrochromic storage performance. In this study, we fabricated counter electrodes (ion storage layers) using IrO2 doping NiO (Ir: NiO) film through cathodic arc plasma (CAP) with varying surface charge capacities. We investigated the influence of MoO3-doped WO3 (Mo: WO3) film by various Ar/O2 gas flow ratios (1/4, 1/5, and 1/6). The ESECDs used in the demonstration were 10×10 cm2 in size. They achieved optical transmittance modulation of Ir: NiO- ESECDs (glass/ITO/ Mo: WO3/gel-polymer electrolytes/ Ir: NiO /ITO/glass), ΔT=53.3% (from Tbleaching (66.6%) to Tcoloration (13.1%)). The ESECDs had a quick coloration time of 3.58 seconds, a rapid bleaching time of 1.24 seconds, and high cycling durability. It remained at 45% transmittance modulation even after 3000 cycles. New anodic materials can provide an alternative to traditional active materials for bi-functional electrochromic batteries.

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Nanoparticulate films of WO3 and MoO3 composites for enhancing UV light electrochromic transmittance variation and energy storage applications

Cited by 9 publications

References 51 publications

New Anodic Discoloration Materials Applying Energy-Storage Electrochromic Device

New Anodic Discoloration Materials Applying Energy-Storage Electrochromic Device

Enhanced Electrochromic Properties of Nanocrystalline Molybdenum Oxide Films Modified by Dopamine

New Anodic Discoloration Materials Applying Energy-Storage Electrochromic Device

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