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Nano-silver wrapped one-dimensional linear electrode material and preparation method thereof

An electrode material, nano-silver technology, applied in conductive materials, conductive materials, cable/conductor manufacturing, etc., can solve problems such as high resolution and difficult to achieve

Active Publication Date: 2019-06-11
上海纳晶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the highest precision of the line width and spacing of screen printing electrodes widely used in the display industry can only reach 50 μm, and it is difficult to achieve higher resolution

Method used

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  • Nano-silver wrapped one-dimensional linear electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Choose copper wire with a width and diameter of 10-12μm, in such as figure 1 Wrapping is carried out on the device shown, and it is transported to the online chemical reaction tank by unwinding and rollers, and the reaction precursor solution reacts with the reducing agent, and the electroless plating method is used to prepare 20-50nm thick nano-silver on the surface of the copper wire for the first time The granular layer, wherein the reaction precursor solution is silver nitrate aqueous solution, the reducing agent is lauric acid, and the molar concentration ratio of the two added is 1:5.

[0092] Then, in the silver paste wrapping device, a wire drawing method is used to coat the surface of the material for the second time and then wrap a layer of silver paste material. The proportion of conductive filler in the silver paste material is 82%; the proportion of inorganic paste is 4% bismuth oxide, 1% silicon oxide, and 2% low-melting glass powder; the proportion of org...

Embodiment 2

[0096] The back electrode aluminum for silicon-based solar cell packaging has a bandwidth of 0.3mm and a thickness of 0.02mm. In order to obtain higher conductivity and adhesion, such as figure 1 Wrapping is carried out on the device shown, and it is transported to the online chemical reaction tank by unwinding and rollers, and the reaction precursor solution reacts with the reducing agent, and the surface chemical plating method is used to coat the surface of the 0.1mm wide aluminum foil for the first time. A rough silver film with a thickness of about 50nm, which has strong adhesion. Wherein, the reaction precursor solution is silver sulfate aqueous solution, the reducing agent is ethylene glycol, and the molar concentration ratio of the two is 1:2.

[0097]Then, at the front end of the installation line where the electrode is installed on the aluminum strip, a layer of silver paste material is applied on the surface of the aluminum strip after the second coating by the roll...

Embodiment 3

[0100] Choose copper wire in such as figure 1 Wrapping is performed on the device shown, and it is transported to the online chemical reaction tank by unwinding and rollers, and reacts with the reducing agent through the reaction precursor solution, and uses a chemical replacement reaction to wrap a layer of high-adhesion film after the first coating on the surface of the copper wire. Focus on silver nanoparticles, wherein the reaction precursor solution is silver nitrate aqueous solution, the reducing agent is tetrabutylammonium bromide, and the molar concentration ratio of the two is 1:8.

[0101] Then, in the silver paste wrapping device, a layer of silver paste material is coated on the surface of the material for the second time. The proportion of conductive filler in the silver paste material is 80%, and the conductive filler is silver nanoparticles with a size of 20-50nm; the proportion of inorganic paste is 5% nanometer Ag3Sn; the proportion of organic paste is 15% of ...

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Abstract

The present invention relates to a nano-silver coated one-dimensional linear electrode material and a preparation method thereof, pertaining to the technical field of electrode materials. According to the nano-silver coated one-dimensional linear electrode material, by taking a one-dimensional linear electrode as a substrate material, the surface of the substrate material is coated with a nano-silver layer. The present invention further provides the preparation method and a using method of the nano-silver coated one-dimensional linear electrode material and a preparation device. According to the nano-silver coated one-dimensional linear electrode material and the preparation method thereof, the nano-silver coated one-dimensional linear electrode material can be acquired, the electrode linewidth size is reduced, and the adhesion force is improved. Meanwhile, the nano-silver coated one-dimensional linear electrode material and the preparation method thereof also has the advantages of reducing production and using cost and realizing oxidation resistance, high conductivity and high wettability of a metal electrode line / wire / band.

Description

technical field [0001] The invention belongs to the technical field of electrode materials, and relates to a nano-silver-wrapped one-dimensional linear electrode material and a preparation method thereof, in particular to a nano-silver-wrapped material on the surface of a one-dimensional linear electrode and a preparation method thereof. Background technique [0002] Conductive silver paste is an important electrode material used in the printed circuit industry, and the core material of conductive silver paste is silver powder, including micron-sized and nano-sized silver particles. In practical applications, due to the problems of high price and easy agglomeration of nano-scale silver particles, 90% of commercial silver pastes use colloidal materials with micron-sized flaky silver particles as the main conductive filler. The conductive performance, electrode line width and electrode spacing of the prepared silver paste electrodes are all affected by the size and shape of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/02H01B5/02H01B13/00
CPCH01B1/02H01B1/023H01B1/026H01B5/02H01B13/0026
Inventor 张哲娟孙卓
Owner 上海纳晶科技有限公司
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