Vanadium Oxide Based Electrochromic Energy Storage Devices via Facile Thin Film Preparation

Abstract

The amount of energy utilized in our lives has significantly increased since the invention of electronic devices. Due to this increase in consumption, energy conservation and small-scale energy storage have become important. Smart glass technology is realized by using electrochromic devices prepared from thin films whose transmittance can be controlled under the influence of electric field. Most of the oxidized components of transition metals can be used in electrochromic devices. Vanadium, transition metal, is one of the rare compounds that show coloration in both anodic and cathodic layers. Vanadium Oxide thin films show phase change at different temperatures. With this feature, it shows anodic or cathodic differences in oxidation levels. In this study, V2O5 thin films were prepared by annealing at different thicknesses and temperatures with a spray coating device in order to measure the energy storage capacity of electrochromic devices. Prepared thin film samples were examined by atomic force microscopy (AFM) to determine their surface morphology. Optical and electrochemical properties of thin films were measured with UV-Vis spectrophotometer. Thin films were prepared for use in the anodic layer by coating PEDOT: PSS on the ITO/glass surface. Electrochromic devices were prepared by combining the anodic and cathodic layers with electrolyte gel by sandwich method. Durability and load capacity analyses of the prepared electrochromic devices were carried out.

Keywords

• Electrochromic devices
• Smart Glasses
• Spray coating
• Thin films
• Vanadium Oxide

Supporting Institution

Çanakkale Onsekiz Mart Üniversitesi-BAP

Project Number

FYL-2019-2827

Thanks

This work was supported by the Office of Scientific Research Projects Coordination at Çanak-kale Onsekiz Mart University. Grant number: FYL-2019-2827.

References

1. Berezina, O., Kirienko, D., Pergament, A., Stefanovich, G., Velichko, A., & Zlomanov, V. (2015). Va-nadium oxide thin films and fibers obtained by acetylacetonate sol–gel method. Thin Solid Films, 574, 15–19 doi:10.1016/j.tsf.2014.11.058.
2. Cai, G., Wang, J., and Lee P.S. (2016). Next-Generation Multifunctional Electrochromic Devices. Acc. Chem. Res., 49, 8, 1469–1476 doi: https://doi.org/10.1021/acs.accounts.6b00183.
3. Chang, J.-Y., Chen, Y.-C., Wang, C.-M., & Chen, Y.-W. (2020). Electrochromic Properties of Li- Do-ped NiO Films Prepared by RF Magnetron Sputtering. Coatings, 10(1), 87 doi:10.3390/coatings10010087.
4. Hall, P. J., ve Bain, E. J. (2008). Energy-storage technologies and electricity generation. Energy Policy, 36(12), 4352–4355 doi:10.1016/j.enpol.2008.09.037.
5. Kastner, M. A. (1992). The single-electron transistor. Revıews Of Modern Physıcs, 64, 849 doi: https://doi.org/10.1103/RevModPhys.64.849.
6. Mjejri, I., Gaudon, M., Song, G., Labrugère, C. and Rougier A. (2018). Crystallized V2O5 as Oxidized Phase for Unexpected Multicolor Electrochromism in V2O3 Thick Film. ACS Appl. Energy Ma-ter., 1, 6, 2721–2729 doi: https://doi.org/10.1021/acsaem.8b00386.
7. Sorell, S. (2015) Reducing energy demand: A review of issues, challenges and approaches. Renewable and Sustainable Energy Reviews, 47,74-82 doi: 10.1016/j.rser.2015.03.002.
8. Sumboja, A. Liu, J., Zheng, W.G., Zong, Y., Zhang H. and Liu Z. (2018). Electrochemical energy sto-rage devices for wearable technology: a rationale for materials selection and cell design. Chem. Soc. Rev., 2018,47, 5919-5945 doi: https://doi.org/10.1039/C8CS00237A.

9. Wu, X., Lai, F., Lin, L., Li, Y., Lin, L., Qu, Y., & Huang, Z. (2008). Influence of thermal cycling on structural, optical and electrical properties of vanadium oxide thin films. Applied Surface Scien-ce, 255(5, Bölüm 2), 2840–2844. doi:10.1016/j.apsusc.2008.08.048.
10. Zakirullin, R.S. (2020). Chromogenic materials in smart windows for angular-selective filtering of solar radiation. Materials Today Energy, 17, 100476 doi: https://doi.org/10.1016/j.mtener.2020.100476.