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Preparation methods of silver nanowires for conductive ink and silver nanowire electrode

A silver nanowire and conductive ink technology, applied in the field of printed electronics, can solve the problems of cumbersome preparation process of silver nanomaterials, inability to use large-scale production and application, harsh experimental conditions, etc., and achieve high yield, uniform size, and simple preparation method Effect

Inactive Publication Date: 2015-11-25
TCL CORPORATION
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing silver nanowires for conductive ink, which aims to solve the problems of cumbersome preparation process, harsh experimental conditions, poor product repeatability and inability to be used in large-scale production applications of existing silver nanomaterials

Method used

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  • Preparation methods of silver nanowires for conductive ink and silver nanowire electrode

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preparation example Construction

[0018] The embodiment of the present invention provides a method for preparing silver nanowires for conductive ink, comprising the following steps:

[0019] S01. Dissolving the silver ion salt and the protective agent in a reducing solvent to form a mixed solution, adding an etchant to the mixed solution to prepare a precursor solution;

[0020] S02. The precursor solution is heated and stirred twice to prepare silver nanowires for conductive inks, wherein, the method for twice heated and stirred is:

[0021] The first heating and stirring treatment: heating and stirring at 135-145°C for 110-130min;

[0022] The second heating and stirring treatment: heating and stirring at 155-165° C. for 25-35 minutes.

[0023] Specifically, in the above step S01, the mixed solution simultaneously contains silver ion salt, a protective agent, and a reducing solvent.

[0024] Wherein, the silver ion salt is an organic or inorganic silver ion salt that can exist as a cation in the reducing s...

Embodiment 1

[0044] A method for preparing a flexible electrode, comprising the following steps:

[0045] Q11. preparing conductive ink silver nanowires, comprising the following steps:

[0046] S11. Add 100mgAgNO 3 Dissolve 100mg of PVP in 30ml of EG, and add 2ulHCl (1M) to it after dissolving evenly to prepare a precursor solution;

[0047] S12. Pour the precursor solution into a flask and heat and stir twice in turn,

[0048] Wherein, the first heating and stirring treatment is placed in a heat-collecting magnetic stirrer at 140° C. and heated and stirred for 2 hours. The reaction equation of the first heating and stirring treatment is as follows:

[0049] 2HOCH 2 CH 2 OH→2CH 3 CHO+2H 2 O(S121)

[0050] 2Ag + +2CH 3 CHO→CH 3 CHO-OHCCH 3 +2Ag+2H + (S122)

[0051] 4HNO 3 +3Ag→3AgNO 3 +NO+2H 2 O(S123),

[0052] Wherein, the reaction formula S123 embodies the reaction process in which the polycrystalline nucleus is etched.

[0053] In the second heating and stirring treatm...

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Abstract

The invention is applicable to the field of printing electronics, and provides preparation methods of silver nanowires for conductive ink and a silver nanowire electrode. The silver nanowires for the conductive ink are prepared by the steps: preparing a precursor solution, and heating and stirring the precursor solution. The silver nanowire electrode can be prepared on a substrate only by dispersing the silver nanowires.

Description

technical field [0001] The invention belongs to the field of printed electronics, and in particular relates to a silver nanowire for conductive ink and a preparation method of a silver nanowire electrode. Background technique [0002] With the development of modern science and technology, printed electronics, as an emerging technology, has attracted widespread attention. As a branch, conductive ink and conductive paste have grown up slowly under the drive of this technology, and are applied to print various electronic devices, such as electronic tags (RFID), electronic circuits, chemical sensors, field effect tubes (FET) and thin film transistors (TFT), etc. Therefore, how to synthesize conductive metal nanomaterials to prepare conductive inks or conductive pastes has become a hot topic at present. Among all metals, silver has the best conductivity, and has many advantages such as high stability, easy reduction, not easy to be oxidized, and easy control of morphology. Ther...

Claims

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Application Information

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IPC IPC(8): C09D11/52C09D11/03B22F9/24
Inventor 杨帆付东
Owner TCL CORPORATION
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