Green synthesis of nanobelt-membrane hybrid structured vanadium oxide with high electrochromic contrast

Kang, Wenbin; Yan, Chaoyi; Wang, Xu; Foo, Ce Yao; Tan, Alvin Wei Ming; Chee, Kenji Jian Zhi; Lee, Pooi See

doi:10.1039/c4tc00158c

Cited by 63 publications

(51 citation statements)

References 46 publications

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“…Here, a zinc foil and a V 3 O 7 film were used as the anode and the cathode, respectively, and a 1 m ZnSO 4 solution was used as the electrolyte due to the high electrochemical activity of the V 3 O 7 film toward Zn 2+ . The CE value is similar to the value reported for Li +based vanadium oxide electrochromic films, [19,30] indicating Zn 2+ ions are efficient and promising in electrochromic battery displays. There are two pairs of redox peaks, around 0.49/0.72 and 0.84/1.15 V, indicating a two-step reaction associated with Zn 2+ insertion and extraction through the V 3 O 7 electrode.…”

Section: Resultssupporting

confidence: 81%

Electrochromic Battery Displays with Energy Retrieval Functions Using Solution‐Processable Colloidal Vanadium Oxide Nanoparticles

Zhang

Al‐Hussein

et al. 2019

Advanced Optical Materials

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for developing bistable displays due to their zero-energy consumption while maintaining a colored or colorless state. [3] However, operation of traditional electrochromic displays requires external voltages to trigger the coloration/bleaching processes, which makes the traditional electrochromic displays far from a netzero energy-consumption technology. The majority of the current electrochromic display research has focused on developing nanostructure electrochromic materials for fast switchings [4,5] without paying attention to how to reduce the consumed energy of the electrochromic displays.Recently, we developed a promising Zn-based electrochromic battery technology for smart windows. [6,7] The electrochromic battery exhibits self-coloration behaviors and eliminates the external voltage requirement for triggering the coloration process. The aqueous compatible Zn anode implements a much lower charged/bleached voltage for the electrochromic battery compared to the Li-and Al-based electrochromic batteries. [8][9][10] The lower charged/bleached potential indicates a lower energy consumption during the bleaching process. As such, the Zn-based aqueous electrochromic battery platform is an energy-efficient technology for reducing the energy consumption of electrochromic devices. To date, no reports exist on the utilization of electrochromic battery systems for developing energy-efficient electrochromic displays.Electrochromic materials play an important role in the development of electrochromic battery displays. Transition metal oxides (TMOs) have shown excellent electrochromic properties due to their remarkable multivalence states and the corresponding color evolutions. [11][12][13][14][15] Among the TMOs, vanadium oxide is considered the most promising material for electrochromic displays because of its multicolor behaviors. [16][17][18] However, the low electrical conductivity, significant volume expansion during cycling, and the slow reaction kinetics of bulk vanadium oxide prevent its widespread use. [19,20] In recent years, nanosized vanadium oxides have been studied to mediate these drawbacks because nanostructures provide abundant active sites on the surface and shorten the diffusion paths of ions. [20] Techniques, such as electrodeposition, [19] Electrochromic displays have attracted increased attention owing to their reversible switch of multicolors. However, the external voltage requirement for triggering the color switching makes them far from an optimum energyefficient technology. The newly developed electrochromic batteries eliminate the energy consumption for coloration while they can retrieve the consumed energy for bleaching. Such features make the electrochromic battery technology the most promising technology for energy-efficient electrochromic displays. Here, a scalable method to synthesize colloidal V 3 O 7 nanoparticles is presented, which is compatible with solution-process techniques for aqueous Zn-V 3 O 7 electrochromic battery displays. The Zn-V 3 O 7 electrochromic battery display shows an ...

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Section: Resultssupporting

confidence: 81%

Electrochromic Battery Displays with Energy Retrieval Functions Using Solution‐Processable Colloidal Vanadium Oxide Nanoparticles

Zhang

Al‐Hussein

et al. 2019

Advanced Optical Materials

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“…In the NIR spectrum range, an average CE of approximately 8.7 cm 2 C À 1 was obtained. These values are similar to those of other crystalline vanadium oxide nanostructures [21][22][23][24][25].…”

Section: Evaluation Of Electrochromic and Electrochemical Propertiessupporting

confidence: 88%

“…In the NIR spectrum, a slightly higher transmittance modulation drop was observed, with an average drop of approximately 5.6%. As compared with corresponding values from the literature, our designed coralline V 2 O 5 nanorod architecture showed higher stability [15,22,23]. For example, a nanobelt-membrane hybrid-structured vanadium oxide film exhibited a contrast degradation of 18.6%, which was obtained after 100 cycles [22].…”

Section: Evaluation Of Electrochromic and Electrochemical Propertiesmentioning

confidence: 91%

“…One effective way to achieve these properties is the use of one-dimensional nanostructures such as nanowires, nanorods, and nanotubes. Various methods have been developed for the formation of nanorods or nanowires [21][22][23][24]. However, because these kinds of electrochromic materials are always in powder form, additional processing is needed to attach them to a transparent current collector [e.g., indium-doped tin oxide (ITO), fluorine-doped tin oxide (FTO)].…”

Section: Introductionmentioning

confidence: 99%

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Annealing synthesis of coralline V2O5 nanorod architecture for multicolor energy-efficient electrochromic device

Tong

et al. 2016

Solar Energy Materials and Solar Cells

105

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“…The accessibility of multiple oxidation states of the V ions also makes these materials of significant interest in the creation of supercapacitors . As such, these materials are of interest from the perspective of fundamental materials science, as well as for their potential applications at the frontiers of electronic device engineering, such as neuromorphic circuitry, Mott field‐effect transistors, and electrochromic devices …”

Section: Introductionmentioning

confidence: 99%

Structure‐Induced Switching of the Band Gap, Charge Order, and Correlation Strength in Ternary Vanadium Oxide Bronzes

Tolhurst

Andrews

Leedahl

et al. 2017

Chemistry A European J

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Recently, V O nanowires have been synthesized as several different polymorphs, and as correlated bronzes with cations intercalated between the layers of edge- and corner- sharing VO octahedra. Unlike extended crystals, which tend to be plagued by substantial local variations in stoichiometry, nanowires of correlated bronzes exhibit precise charge ordering, thereby giving rise to pronounced electron correlation effects. These developments have greatly broadened the scope of research, and promise applications in several frontier electronic devices that make use of novel computing vectors. Here a study is presented of δ-Sr V O , expanded δ-Sr V O , exfoliated δ-Sr V O and δ-K V O using a combination of synchrotron soft X-ray spectroscopy and density functional theory calculations. The band gaps of each system are experimentally determined, and their calculated electronic structures are discussed from the perspective of the measured spectra. Band gaps ranging from 0.66 ± 0.20 to 2.32 ± 0.20 eV are found, and linked to the underlying structure of each material. This demonstrates that the band gap of V O can be tuned across a large portion of the range of greatest interest for device applications. The potential for metal-insulator transitions, tuneable electron correlations and charge ordering in these systems is discussed within the framework of our measurements and calculations, while highlighting the structure-property relationships that underpin them.

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Green synthesis of nanobelt-membrane hybrid structured vanadium oxide with high electrochromic contrast

Cited by 63 publications

References 46 publications

Electrochromic Battery Displays with Energy Retrieval Functions Using Solution‐Processable Colloidal Vanadium Oxide Nanoparticles

Electrochromic Battery Displays with Energy Retrieval Functions Using Solution‐Processable Colloidal Vanadium Oxide Nanoparticles

Annealing synthesis of coralline V2O5 nanorod architecture for multicolor energy-efficient electrochromic device

Structure‐Induced Switching of the Band Gap, Charge Order, and Correlation Strength in Ternary Vanadium Oxide Bronzes

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