Durability-reinforced electrochromic device based on surface-confined Ti-doped V2O5 and solution-phase viologen

Li, Mei; Weng, Duo; Wei, Youxiu; Zheng, Jianming; Xu, Chunye

doi:10.1016/j.electacta.2017.07.049

Cited by 27 publications

(2 citation statements)

References 23 publications

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“…In practice, mainly V 2 O 5 is doped with other transition zone metal ions, and exploration of new preparation methods to improve the electrochemical properties, such as the introduction of titanium ions, reduce the crystallinity of V 2 O 5 and improve the cyclic stability of the film. Then an electrochromic energy storage device was constructed with WO 3 and Ti–V 2 O 5 as working electrodes to achieve a multicolor display. − It is of utmost significance for designing and fabricating functional V 2 O 5 materials and electrochromic devices which satisfy flexible electrochromic devices.…”

Section: Introductionmentioning

confidence: 99%

Flexible Reflective Electrochromic Devices Based on V₂O₅-Methyl Cellulose Composite Films

Sun

Cui

Wang

et al. 2022

ACS Appl. Electron. Mater.

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Electrochromic devices show great potential for color switchability and ease of manipulation for reflection tuning. However, the devices’ color fit and cycle stability make it difficult to meet the requirements of functional reflective product applications. Herein, a vanadium pentoxide (V2O5)–cellulose composite electrochromic film with remarkable cycling stability and a wide range of color options is presented. Flexible reflective electrochromic devices realizing free switching between yellow and blue were successfully assembled by the prepared composite films; in the test, the device possesses a low drive voltage (±1 V) and a rapid switching response time (≤5.6 s) and excellent working status after 1000 cycles. Besides, the assembled devices demonstrated an exceptional range of optical reflection modulation upon excitation. This study presents a direction for the selection of suitable devices in the field of flexible functional materials and broadens the scope of electrochromic applications.

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Section: Introductionmentioning

confidence: 99%

Flexible Reflective Electrochromic Devices Based on V₂O₅-Methyl Cellulose Composite Films

Sun

Cui

Wang

et al. 2022

ACS Appl. Electron. Mater.

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“…[1][2][3][4] So far, numerous transition metal oxides, such as WO 3 , TiO 2 , Nb 2 O 5 , V 2 O 5 , and MoO 3 , have been investigated by ion intercalation and deintercalation processes for their electrochromic applications. [5][6][7][8][9][10][11][12][13] WO 3 has been identified as a promising inorganic electrochromic material because of its excellent coloration effect, fast redox reaction, and good chemical stability. [14][15][16] However, the understanding of the properties of WO 3 and its potential application in electrochromic devices is still incomplete; thus, our study focuses on properties of WO 3 films.…”

mentioning

confidence: 99%

Development of Tungsten Trioxide Using Pulse and Continuous Electrodeposition and Its Properties in Electrochromic Devices

Elayappan

Yun

Quy

et al. 2019

J. Electrochem. Soc.

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To develop an economical, efficient, and highly stable electrode having high transmittance modulation, thin films of tungsten trioxide (WO 3 ) were deposited on an Indium-doped tin oxide (ITO) glass substrate by using simple one-step pulse voltage electrodeposition (PVE) and continuous voltage electrodeposition (CVE) routes. Electrochemical and optical analyses demonstrated that the WO 3 electrode prepared by PVE possessed high switching speed, high coloration efficiency, and excellent cyclic stability. Moreover, its stable performance in the colored state extended for a long duration even after the voltage was cutoff. The coloration efficiency values were determined to be 69.00 and 43.00 cm 2 /C for W-PVE-600s and W-CVE-200s, respectively. The excellent electrochemical and electrochromic properties were mainly attributed to large surface area of W-PVE-600s, which facilitated charge transfer and promoted insertion/exertion of H + ions in electrolytes better than the WO 3 electrode prepared by conventional methods. The significant electrocatalytic activity and stable performance have proved that the proposed W-PVE-600s film can be an alternative to conventional electrodes used in smart window technology applications.

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Divalent Viologen Cation‐Based Ionogels Facilitate Reversible Intercalation of Anions in PProDOT‐Me₂ for Flexible Electrochromic Displays

Bai,

Wu,

Fang

et al. 2023

Adv Funct Materials

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The electrochromic (EC) polymer poly (3,4‐(2,2‐dimethylpropylenedioxy)thiophene) (PProDOT‐Me2) is expected to be used in flexible e‐paper displays because of its great optical modulation ability and inherent flexibility. While the EC effect is primarily determined by the anions and cations in the electrolyte, yet suffers from inorganic salt based on monovalent Li+ cations and corresponding anions, such as lithium perchlorate(LiClO4), lithium bis(trifluoromethane sulfonyl) imide (LiTFSI), and lithium trifluoromethane sulfonate (LiTRIF), which may impact the overall EC performance of the EC device caused by insufficient ion doping/de‐doping processes. Herein, the divalent viologen cation‐based ionogel (VGE) is developed to tackle the challenge. Owing to its more anions design, the doping/de‐doping process in the PProDOT‐Me2 is more sufficient, thereby enhancing the optical modulation range (ΔR = 39.4%) of PProDOT‐Me2, compared to monovalent Li+ cation‐based ionogel (ΔR = 13.3%). Meanwhile, the VGE has good interface contact with PProDOT‐Me2 and the flexible electrode, which makes the VGE‐based EC device (V‐ECD) exhibit commendable mechanical stability. To demonstrate the potential application in flexible e‐paper displays, the simple eight‐digit EC display device is assembled from seven V‐ECDs, each of which hasa high switching speed, robust cycling stability, and low operating energy consumption.

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Durability-reinforced electrochromic device based on surface-confined Ti-doped V2O5 and solution-phase viologen

Cited by 27 publications

References 23 publications

Flexible Reflective Electrochromic Devices Based on V₂O₅-Methyl Cellulose Composite Films

Flexible Reflective Electrochromic Devices Based on V₂O₅-Methyl Cellulose Composite Films

Development of Tungsten Trioxide Using Pulse and Continuous Electrodeposition and Its Properties in Electrochromic Devices

Divalent Viologen Cation‐Based Ionogels Facilitate Reversible Intercalation of Anions in PProDOT‐Me₂ for Flexible Electrochromic Displays

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Durability-reinforced electrochromic device based on surface-confined Ti-doped V2O5 and solution-phase viologen

Cited by 27 publications

References 23 publications

Flexible Reflective Electrochromic Devices Based on V2O5-Methyl Cellulose Composite Films

Flexible Reflective Electrochromic Devices Based on V2O5-Methyl Cellulose Composite Films

Development of Tungsten Trioxide Using Pulse and Continuous Electrodeposition and Its Properties in Electrochromic Devices

Divalent Viologen Cation‐Based Ionogels Facilitate Reversible Intercalation of Anions in PProDOT‐Me2 for Flexible Electrochromic Displays

Contact Info

Product

Resources

About

Flexible Reflective Electrochromic Devices Based on V₂O₅-Methyl Cellulose Composite Films

Flexible Reflective Electrochromic Devices Based on V₂O₅-Methyl Cellulose Composite Films

Divalent Viologen Cation‐Based Ionogels Facilitate Reversible Intercalation of Anions in PProDOT‐Me₂ for Flexible Electrochromic Displays