Method for preparing WO3 electrochromic film by potentiodynamic electrochemical deposition

Abstract

The invention discloses a method for preparing WO3 electrochromic film by potentiodynamic electrochemical deposition, and belongs to the technical field of functional materials. The method comprises the following steps: adding an appropriate amount of tungsten powder into hydrogen peroxide for completely dissolving to prepare a peroxotungstic acid solution; adding an appropriate amount of ethanol and acetic acid to be stirred fully to obtain a stable mixed solution. The peroxotungstic acid solution prepared in the invention is relatively stable and can be placed for one month at normal temperature for continuous use; the method for preparing the WO3 film by potentiodynamic electrochemical deposition is low in cost, simple in process, free from annealing, uniform in film formation, and high in repeatability; the prepared film has excellent electrochromic and optical properties, thereby providing a new idea for development and industrialized production of an energy-conversing and efficient low-cost WO3 film technology.

Description

technical field [0001] The invention relates to a kind of potentiodynamic electrochemical deposition to prepare WO 3 The method for an electrochromic thin film belongs to the technical field of functional materials. Background technique [0002] In recent years, with the aggravation of environmental pollution and the danger of energy shortage, human beings are facing more and more challenges. Therefore, how to effectively use renewable energy such as wind energy and solar energy to save energy and ensure the sustainable development of the human environment is imminent. . According to statistics, the energy consumption of building glass in my country accounts for most of the total energy consumption of the society, and people spend a lot of energy on temperature regulation of buildings every year. Therefore, people make various smart energy-saving windows and other measures to reduce energy consumption. As the main body of smart windows, this electrochromic material will be...

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Problems solved by technology

[0004] Traditionally prepared WO 3 The main methods of thin films are sol-gel method, magnetron sputtering method, hydrothermal method, etc., but in the above methods, such as sol-gel method cannot prepare large-area thin films, the equipment cost of magnetron sputtering method is expensive, and hydrothermal method Complex process, etc.

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