Method for activating electrochromic performance of NiO film

• Main Authors: XU KEJUN, LIU GU, GE CHAOQUN, WANG LIUYING, WANG LONG
• Format: Patent
• Language: Chinese; English
• Published: 24.02.2023
• Subjects: ADHESIVES; CHEMISTRY; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES

The invention provides a method for activating the electrochromic performance of a NiO film. The method comprises the following steps that S1, the NiO film is placed in an alkaline aqueous electrolyte under a three-electrode system to be subjected to color changing circulation; s2, adjusting an electrochemical method, adjusting voltage to continuously change color and circulate, and continuously acting for 2 hours; s3, the thin film is taken out of the electrolyte and washed with deionized water to remove the electrolyte remaining on the surface, and heat treatment is conducted for 3 hours at the temperature of 350 DEG C in the argon atmosphere after drying; and S4, cooling the film to normal temperature. And through electrochemical reaction between the alkaline solution and the NiO film, the performance of the ineffective NiO electrochromic film is recovered to the initial state, so that the ineffective NiO electrochromic film can be subjected to stable electrochromic circulation again. According to the meth