Testing of electrochromic materials using symmetrical devices

Authors: Lefrou, C.; Gentilhomme, C.; Ast, M.

Source: Journal of Applied Electrochemistry, Volume 36, Number 9, September 2006 , pp. 1011-1019(9)

Publisher: Springer

Buy & download fulltext article:

Price: $47.00 plus tax (Refund Policy)

Abstract:

“Symmetric materials” devices, where both electrodes are made of the same electrochromic materials, allow the in situ study of side reactions. Each transferred charge that is not used for the expected electrochromic reaction will cause a colour change in the whole symmetric device. Two electrochromic materials, WO₃ and IrO₂, are successively used to show how to obtain information about side reactions such as faradaic efficiency, reversibility and potential limits from the symmetric experiment. This in situ approach with a polymer electrolyte shows significant differences compared to results obtained with studies in aqueous electrolytes.

Keywords: colouration parameters; electrochromic systems; in situ studies; iridium oxide; side reactions; tungsten oxide

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s10800-006-9169-0

Affiliations: 1: Email: christine.lefrou@inpg.fr

Publication date: 2006-09-01