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A kind of electric card material and preparation method thereof

A technology of electric card and electrode slurry, which is applied in the field of electric card materials and its preparation, can solve the problems of incompatibility between flexibility and electric card strength, and achieve the effect of good flexibility

Inactive Publication Date: 2017-11-14
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides an electric card material and a preparation method thereof, the purpose of which is to obtain an electric card material with good flexibility and ideal electric card effect, thereby solving the problem of flexibility and electric card effect. The technical problem that the card strength cannot be combined

Method used

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  • A kind of electric card material and preparation method thereof
  • A kind of electric card material and preparation method thereof
  • A kind of electric card material and preparation method thereof

Examples

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preparation example Construction

[0018] Such as figure 1 As shown, the preparation method of the electric card material of the embodiment of the present invention comprises the following steps:

[0019] (1) The glass coated with fluorine-doped tin oxide on the surface is placed in the hydrochloric acid solution of tetrabutyl titanate, and the first hydrothermal reaction is carried out at 100°C to 200°C to generate titanium dioxide nanowire arrays on the glass surface.

[0020] (2) Put the glass with titanium dioxide nanowire arrays on the surface into the glass containing Ba 2+ and Sr 2+ solution, where Ba 2+ and Sr 2+ The molar concentration ratio is (1-3):1, and the second hydrothermal reaction is carried out at 150°C-230°C to generate BST ceramic nanowire arrays on the glass surface.

[0021] (3) The BST ceramic nanowire array is peeled off from the glass surface and transferred to a flexible substrate to obtain the BST ceramic nanowire array electrical card material.

[0022] The specific operation i...

Embodiment 1

[0027] Mix hydrochloric acid with a mass fraction of 37% and deionized water at a volume ratio of 1:1 to obtain a hydrochloric acid solution; add tetrabutyl titanate to the hydrochloric acid solution, and the volume ratio of tetrabutyl titanate to hydrochloric acid solution is 1.5:100 , to obtain the hydrochloric acid solution of tetrabutyl titanate; put the glass coated with fluorine-doped tin oxide on the surface in the hydrochloric acid solution of tetrabutyl titanate, put it into the hydrothermal reaction kettle, and carry out the first hydrothermal reaction, the reaction The temperature is 150°C, and the reaction time is 20 hours; after that, the titania nanowire array obtained after the reaction is cleaned; barium hydroxide and strontium hydroxide are dissolved in deionized water, and the concentration of barium hydroxide in the obtained mixed solution is 0.015mol / L, the concentration of strontium hydroxide is 0.005mol / L, the glass with titanium dioxide nanowire arrays o...

Embodiment 2 and 3

[0029] Hydrochloric acid with a mass fraction of 37% was mixed with deionized water at a volume ratio of 1:2 and 2:1, and the rest were the same as in Example 1.

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Abstract

The invention discloses an electrocaloric material and a preparation method thereof. The electrocaloric material is formed by a BST ceramic nanowire array which covers a flexible substrate, wherein in the BST ceramic nanowire array, the mole ratio of Ba to Sr is (1-3):1. According to the electrocaloric material and the preparation method thereof, the BST ceramic nanowire array is adopted as the electrocaloric material for the first time, the electrocaloric material with the good flexibility and ideal electrocaloric effect is prepared by transferring the BST ceramic nanowire array onto the flexible substrate and fully utilizing the good electrocaloric effect of ferroelectric ceramics and the flexibility of a special microstructure of the nanowire array, and preparation of the inorganic flexible electrocaloric material is achieved.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and more specifically relates to an electronic card material and a preparation method thereof. Background technique [0002] Among various materials, the electric card material uses an external electric field to stimulate the phase transition in its body, and realizes cooling by means of the heat absorption effect caused by the phase transition. Refrigerators based on electric card materials do not need to use refrigerants such as Freon, which is seriously harmful to the environment, and have ideal cooling efficiency. The application of the electric card effect is an important way to realize the next generation of high-efficiency and environmentally friendly refrigeration devices. The development of high-performance electric card materials and devices will lay a good foundation for the development of solid-state integrated refrigeration technology in the future, and can also be appli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/468C04B35/47C04B35/622
CPCC04B35/468C04B35/47C04B35/622C04B2235/61
Inventor 张光祖陈墨王庆沈孟刘品姜胜林曾亦可
Owner HUAZHONG UNIV OF SCI & TECH