Electrochemical properties of opal-V6O13 composites

• Published in: Journal of alloys and compounds Vol. 586; pp. 621 - 626
• Main Authors: Vernardou, D., Apostolopoulou, M., Louloudakis, D., Spanakis, E., Katsarakis, N., Koudoumas, E., McGrath, J., Pemble, M.E.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15.02.2014; Elsevier
• Subjects: Alloys; Charge; Chemistry; Crystal structure; Deposition; Electrochemistry; Electrochromic response; Electrochromism; Exact sciences and technology; General and physical chemistry; Hydrothermal growth; Opal substrates; Oxides; Specific capacitance; Vanadium oxides; Voids; Opal substrates; Specific capacitance; Hydrothermal growth; Vanadium oxides; Electrochromic response; Glass; Electrochromism; Coverage rate; Porous material; Composite material; Electrochemical properties; Hydrothermal synthesis; Capacitance; Vanadium oxide; Electrooptical effect
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2013.10.151

[Display omitted] •Opal-V6O13 composites grown at 95°C for 50h.•The deposition period affects the void filling of the opals.•The electrochemical performance is correlated with the oxide’s characteristics. Vanadium oxides were hydrothermally grown on opal glass substrates at 95°C. The deposition period was observed to affect the structure of the oxides and the voids filling of the opal surfaces. V6O13 grown on opal for 50h presented satisfactory electrochemical performance and electrochromic response with a contrast ratio of 2. The specific capacitance of this composite reached a value of 192Fg−1, which was stable up to 500 continuous charge intercalation/deintercalation scans. The importance of achieving crystalline V6O13 and high opal surface coverage towards the enhancement of the electrochemical properties is presented.