Galvano-chemistry preparation method for electrochromic magnesium-nickel alloy film

Abstract

The invention relates to an electrochemistry preparation method for an electrochromism magnesium-nickel alloy film. Firstly, an organic solvent N,N-dimethylformamide is dried for 48 hours by an activated 4 molecular sieve, then is decompressed and distilled to remove the impurities; then the main salt dehydrate and nickelous chloride as well as the lithium perchlorate supporting electrolyte are respectively dried for four hours under the vacuum with the temperature of 150 DEG C and then placed in an vacuum drying box for spare; then the nicks and the oil stains on the surface of a copper sheet are removed; the main salt and the organic solvent N,N-dimethylformamide used for supporting electrolyte are prepared into liquid with the concentration of 0.2mol / L of the dehydrate, the concentration of 0.2mol / L of the lithium perchlorate and the concentration of 0.02mol / L of the nickelous chloride; argon is pumped into the liquid so as to expel the oxygen dissolved in the N,N-dimethylformamide; finally the magnesium-nickel alloy film is obtained by carrying out electrochemistry deposition under the constant temperature and constant potential condition by a three-electrode system. The method is simple, needs no complex post treatment working procedures like heat treatment and can effectively control the light transmittance and the reflectivity of the film.

Description

technical field [0001] The invention relates to a preparation technology of a functional thin film, in particular to an electrochemical preparation method of an electrochromic magnesium-nickel alloy thin film. Background technique [0002] Color-changing materials are widely used in electronics, information, energy, construction, etc., and can be divided into electrochromic materials, photochromic materials, thermochromic materials, aerochromic materials, etc. according to different conditions that cause discoloration. The so-called electrochromism refers to the phenomenon that the optical properties of the material produce stable and reversible changes under the action of an applied voltage or electric field, and the external performance is a stable and reversible change of the color or transparency of the material. Electrochromic film has good physical and chemical properties, wide range of continuous adjustable optical properties, low operating voltage, low energy consump...

AI Technical Summary

Problems solved by technology

[0005] However, the preparation methods of the above-mentioned thin film materials are limited to several methods such as electron beam evaporation and magnetron sputtering.

These methods require high process conditions and expensive equipment, which limits the application of this film

Images