Preparation method of low-energy-consumption screen-printed molybdenum-doped tungsten oxide nano-structure electrochromic film

Abstract

The invention discloses a preparation method of a low-energy-consumption screen-printed molybdenum-doped tungsten oxide nano-structure electrochromic film. According to the technical scheme, the method is characterized by comprising the following steps of: dissolving tungstic acid in hydrogen peroxide, performing oil bath heating and stirring until a clear solution is obtained, adding molybdenum oxide, ethylene glycol and deionized water into the clear solution, heating an oil bath pot, conducting reflux condensation to obtain a molybdenum-doped tungsten oxide nano sol, and conducting centrifugation and washing for standby use; dissolving ethyl cellulose in ethanol at room temperature, performing stirring to obtain a clear and transparent sol, adding terpilenol and the molybdenum-doped tungsten oxide nano sol prepared in the previous step into the sol, and carrying out rotary evaporation of an organic solvent to obtain a molybdenum-doped tungsten oxide nano slurry; and uniformly attaching the molybdenum-doped tungsten oxide nano slurry to an ITO or FTO conductive glass substrate by adopting a silk-screen printing or blade coating method, conducting calcining by using a muffle furnace, and performing natural cooling to obtain the low-energy-consumption screen-printed molybdenum-doped tungsten oxide nano-structure electrochromic film.

Description

[0001] This application is a divisional application. The original application name is: A method for preparing a screen-printed molybdenum-doped tungsten oxide nanostructure electrochromic film. The application number is: 2017102708795, and the application date is: 20170424. 【Technical field】 [0002] The invention belongs to the field of electrochromism, and in particular relates to a method for preparing an electrochromic film with a low-energy screen printing molybdenum-doped tungsten oxide nanostructure. 【Background technique】 [0003] When a voltage is applied to the material, the phenomenon of reversible color change exhibited by the material is called electrochromism. Electrochromic materials include organic materials and inorganic materials. Inorganic materials have attracted much attention due to their good cycle stability. Oxidation Tungsten is a representative substance in inorganic materials. [0004] At present, magnetron sputtering is mostly used to prepare larg...

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Problems solved by technology

[0004] At present, magnetron sputtering is mostly used to prepare large-area tungsten oxide electrochromic films, but there are many problems: (1) high cost and high energy consumption

A continuous magnetron sputtering instrument costs tens of millions and consumes a lot of power

(2) The tungsten oxide film prepared by magnetron sputtering is too dense, which is not conducive to the intercalation and extraction of lithium ions during the discoloration process, and there are problems such as long response time and poor energy utilization.

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