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

An alloy thin film and electrochromic technology, which is applied in the field of electrochemical preparation of electrochromic magnesium-nickel alloy thin films, can solve the problems of limiting the application of this thin film, high process conditions, and expensive equipment costs, and achieve low cost and simple operation , The effect of low equipment requirements

Inactive Publication Date: 2008-09-24
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 evapor

Method used

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the N, N-dimethylformamide solution with a magnesium perchlorate concentration of 0.2mol / L, a lithium perchlorate concentration of 0.2mol / L, and a nickel chloride concentration of 0.02mol / L, the control potential is -2.4 At V, the temperature was 20°C and 40°C respectively, and magnesium-nickel alloy thin films with good electrochromic properties could be obtained after electrification for 60 seconds.

Embodiment 2

[0029] In the N, N-dimethylformamide solution with a magnesium perchlorate concentration of 0.2mol / L, a lithium perchlorate concentration of 0.2mol / L, and a nickel chloride concentration of 0.02mol / L, the control potential is -2.8 At V, the temperature was 20°C and 40°C respectively, and magnesium-nickel alloy thin films with good electrochromic properties could be obtained after electrification for 50 seconds.

Embodiment 3

[0031] In the N, N-dimethylformamide solution with a magnesium perchlorate concentration of 0.2mol / L, a lithium perchlorate concentration of 0.2mol / L, and a nickel chloride concentration of 0.02mol / L, the control potential is -2.6 At V, the temperature is 30°C, and the power-on time is 120 seconds, 60 seconds, 30 seconds, and 20 seconds. It is confirmed by testing that alloy films with good discoloration properties can be obtained when electrodeposited for 30 seconds and 1 minute, and the alloy films with electrodeposited times of 120 seconds and 20 seconds have no obvious electrochromic performance.

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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...

Claims

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Application Information

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IPC IPC(8): C25D3/56
Inventor 苏革孙武珠曹立新柳伟刘天中贾波
Owner OCEAN UNIV OF CHINA
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