Fluorescent polyurethane based solid-state electrolyte and electrolyte film and lithium battery thereof

The invention provides a fluorescent polyurethane based solid-state electrolyte and an electrolyte film and a lithium battery thereof. The solid-state electrolyte comprises, by weight, 20-95% of fluorescent polyurethane and 5-80% of lithium salt. A preparation method of the electrolyte film includes: dissolving fluorescent polyurethane and lithium salt into a solvent to obtain film casting liquid,and performing film forming on the film casting liquid to obtain the electrolyte film. Fluorescent polyurethane is adopted as a matrix of the electrolyte, so that the solid-state electrolyte is endowed with high ion electroconductivity and high fluorescence and can be used for fluorescent recognition and detection and preparation of luminous electronic devices. 本发明提出种荧光型聚氨酯基固态电解质及其电解质膜和锂电池，所述固态电解质按重量百分比包括荧光型聚氨酯20-95％和锂盐5-80％。其电解质膜的制备方法包括：将荧光型聚氨酯和锂盐溶解于溶剂中得到铸膜液，将所述铸膜液成膜即得所述电解质膜。本发明所述电解质采用荧光型聚氨酯作为基体，赋予固态电解质高的离子电导率和强的荧光性，不仅可以进行荧光识别和检测，而且用于可发光电子器件的制备。