| 摘要 |
In the preferred embodiment, an improved electrochromic display device is disclosed wherein an acid-resistant, proton-conductive, nonporous polymer layer separates the electrochromic transition metal oxide film and the aqueous acidic electrolyte. The polymer layer preferably comprises an ultraviolet light-cured, plasticized poly (vinyl alcohol) that is thermally treated to render it acid insoluble. The polymer layer conducts protons between the electrolyte and the electrochromic layer to permit the desired electrochromic reactions to occur, but reduces film dissolution into the electrolyte to substantially extend the useful lifetime of the device.
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