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Sol-gel electrochromic WO3 coatings on glass

IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata

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Title Sol-gel electrochromic WO3 coatings on glass
Creator Patra, A
Auddy, K
Ganguli, Dibyendu
Livage, J
Biswas, Prasanta Kumar
Subject Glass
Description The structural study on precursor material of electrochromic (EC) tungsten oxide has been studied by differential thermal analysis (DTA), X-ray and FTIR. The electrochromic coatings having a thickness 300 nm were prepared by dipping technique. Out of the wide range of curing temperature (60-400 degreesC), the films cured at similar to200 degreesC for 1 h exhibited good electrochromic effect. Electrochromic properties of the tungsten oxide coatings were studied by cyclic voltammetry (CV), using a three-electrode cell system with 0.01 M HCl as an electrolyte. Cyclic voltamograms have been recorded ranging from -1.50 to 0.75 Vat a scan rate range of 0.010-0.005 V s(-1). In aqueous medium, the coloration <----> bleaching could not be continued more than five to eight cycles for acid to the corrosion Of WO3 films- If lithium-based nonaqueous electrolyte is used for this purpose, the coatings withstood more than 500 cycles. It is suggested that the films obtained after curing at requisite temperature for having the coloration <----> bleaching effect contained mainly with the W-O-W bonding pattern in orthorhombic crystalline phase. (C) 2003 Elsevier B.V. All rights reserved.
Publisher Elsevier
Date 2004-02
Type Article
Format application/pdf
Identifier http://cgcri.csircentral.net/537/1/Mater_Lett_58_(2004)_1059%E2%80%93_1063.pdf
Patra, A and Auddy, K and Ganguli, Dibyendu and Livage, J and Biswas, Prasanta Kumar (2004) Sol-gel electrochromic WO3 coatings on glass. Materials Letters, 58 (6). pp. 1059-1063. ISSN 0167-577X
Relation http://cgcri.csircentral.net/537/