摘要 |
PURPOSE: An electrochromic composition for use in electrochromic devices such as an automobile mirror, a transmission-controlled window glass or a display device, which does not occur layer separation after a long time to obtain uniform color development is provided. CONSTITUTION: The electrochromic composition for use in electrochromic devices comprises: (a) cathode reducing agent consisting of the cation having the formula(I) and/or formula(II) and the anion comprising C2B9H12, wherein each of R21 and R22 is selected from the group consisting of alkyl of C1-10, phenyl substituted with Cl, Br, cyano, alkyl having 1-4 of carbon atoms and benzyl substituted with Cl, Br, cyano, alkyl of C1-4; and R31 is alkyl of C1-10; (b) anode oxidizing agent; and (c) solvent including propylene carbonate or gamma-butyrolactone.
|