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Testing of electrochromic materials using symmetrical devices

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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.

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Lefrou, C., Gentilhomme, C. & Ast, M. Testing of electrochromic materials using symmetrical devices. J Appl Electrochem 36, 1011–1019 (2006). https://doi.org/10.1007/s10800-006-9169-0

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  • DOI: https://doi.org/10.1007/s10800-006-9169-0

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