Electrochromic device with oxymethylene-polyoxyethylene electrolyte.

摘要

An electrochromic cell (10) is provided having a Li<+>-doped oxymethylene-polyoxyethylene solid polymer electrolyte film (12). The film (12) of ionically-doped oxymethylene-polyoxyethylene is sandwiched between two complementary electrochromic layers (26,28), one of which is tungsten oxide. The other electrochromic layer (28) is a polyaniline or a Prussian Blue material. The complementary electrochromic layers (26,28) are deposited onto electrically-conductive transparent substrates (14,16), such as fluorine-doped tin oxide-coated glass. The electrochromic cell (10) colours and bleaches by the application of an appropriate electrical potential between the two electrochromic films (26,28). The Li<+>-doped oxymethylene-polyoxyethylene electrolyte film (12) is stable at elevated temperatures up to about 100 DEG C.