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Silver nanowires and their preparation methods and applications

A technology of silver nanowires and silver salts, which is applied in the field of materials, can solve problems such as poor bending resistance, affecting the performance of transparent electrodes, and small length and diameter of silver nanowires, achieving excellent bending resistance, excellent aspect ratio, The effect of excellent electrical conductivity

Active Publication Date: 2022-07-12
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology

At present, the aspect ratio of some silver nanowires is too small, which affects the performance of transparent electrodes
Although some silver nanowires have a long aspect ratio, their bending resistance is poor, which still cannot meet the actual needs.

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  • Silver nanowires and their preparation methods and applications
  • Silver nanowires and their preparation methods and applications
  • Silver nanowires and their preparation methods and applications

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preparation example Construction

[0020] The method for preparing silver nanowires in one embodiment can prepare silver nanowires with a longer aspect ratio and better bending resistance, which can be used to prepare electronic products such as displays and touch screens, especially flexible and bendable electronic products. product. The preparation method of the silver nanowire includes the following steps S110-S130:

[0021] S110. Dissolving a silver salt in the first solvent to obtain a first mixture, where the silver salt is selected from at least one of silver trifluoromethanesulfonate, silver diethyldithiocarbamate and silver succinimide , the first solvent is water.

[0022] Generally, in the preparation method of silver nanowires, organic solvents are often used to dissolve silver salts. The organic solvents have strong odor, strong irritation and toxicity, and have high VOC emissions and pollute the environment. In this study, water was used as the first solvent, water has good solubility for silver...

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Abstract

The present invention relates to a silver nanowire and its preparation method and application. The preparation method of the silver nanowires comprises the following steps: dissolving a silver salt in a first solvent to obtain a first mixture, wherein the silver salt is selected from silver trifluoromethanesulfonate, silver diethyldithiocarbamate and succinyl At least one of the imine silver salts, the first solvent is water; the seed crystal, the reducing agent and the dispersing agent are dissolved in the second solvent at 48°C to 72°C to obtain a second mixture, and the crystal seed is selected from citric acid At least one of trisilver or silver tetrafluoroborate, and the second solvent is water; the first mixture and the second mixture are mixed in a dropwise manner, the pH is adjusted to 8-8.5, and the solid-liquid separation is performed to obtain silver nanowires. The above preparation method can obtain silver nanowires with superior bending resistance and longer aspect ratio.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a silver nanowire and a preparation method and application thereof. Background technique [0002] Nanowires are nanoscale materials that can be used to make ultra-small circuits. Among them, silver nanowires have excellent conductivity and excellent light transmittance. They are conductive materials that can impart conductivity to transparent substrates. Therefore, they are often used to replace traditional ITO materials to make transparent electrodes. In electronic products such as light-emitting diodes and touch screens. At present, the aspect ratio of some silver nanowires is too small, which affects the performance of transparent electrodes. Although some silver nanowires have a long aspect ratio, their bending resistance is poor, which still cannot meet the actual needs. SUMMARY OF THE INVENTION [0003] Based on this, it is necessary to provide a method for preparing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B22F1/054B82Y40/00B82Y30/00
CPCB22F9/24B82Y40/00B82Y30/00B22F1/0547
Inventor 郑俊威
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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