▎ 摘　　要

NOVELTY - The organic-inorganic composite electrochromic coating solution is prepared from 0.05-6 pts. wt. nano Prussian blue (particle size 20-100 nanometer, nano Prussian blue), 0.01-2 pts. wt. total amount 0.5-3% of PEDOT:PSS aqueous solution, 0.2-3 pts. wt. nano titanium dioxide (particle size of 20-80 nanometer of nano titanium dioxide-anhydrous ethanol suspension 2-20 pts. wt. film-forming agent, 0.05-1 pts. wt. coupling agent, 0.1-5 pts. wt. thickener, 0.01-2 pts. wt. surfactant, 0.01-1 pts. wt. pH adjuster, 15-60 pts. wt. organic solvent, 35-70 pts. wt. deionized water, and 0.05-5 pts. wt. functional additive (leveling agent, anti-shrinking agent). The PEDOT:PSS is the abbreviation of conductive polymer poly(3,4-ethylenedioxythiophene-polystyrene sulfonate), and the percentages of the above-mentioned components add up to 100%. USE - Electrochromic coating solution based on Prussian blue used in electrochromic device (claimed), where electrochromic device used join electrochromic labels, electrochromic anti-counterfeiting labels, electrochromic paper, dynamic display of handicrafts, small camera shielding devices, mobile phone dynamic shells, electrochromic glasses, and electrochromic goggle. ADVANTAGE - The electrochromic device has good electrochromism cycle performance in the applied voltage range. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electrochromic device prepared based on the electrochromic coating solution of Prussian blue, which comprises: transparent electrode, an electrochromic material layer, an electrolyte layer, and a second electrode, where the electrochromic material layer is prepared with the electrochromic coating liquid based on Prussian blue, and the driving voltage value of the electrochromic display device is between 0-1.23 volt. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic cross-sectional view of an electrochromic device. 1Soda lime glass 2Transparent indium tin oxide 3Electrochromic material layer 4Electrolyte layer 7Silicone rubber adhesive sealing frame