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Antioxidant conductive copper nanowire film and preparation method and application thereof

A copper nanowire, anti-oxidation technology, applied in chemical instruments and methods, conductive layers on insulating carriers, nanotechnology for materials and surface science, etc., can solve the problem of reducing the resistance of copper nanowire electrodes and reducing copper nanowire Contact resistance, lack of anti-oxidation ability and other problems, to solve the effect of unstable conduction, low price and cost, and good anti-oxidation effect

Active Publication Date: 2020-02-11
JIANGSU UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, Han et al. used a laser beam to quickly reduce the oxidized copper nanowires to copper nanowires. Although this method can be reduced many times, the reduced copper nanowire electrodes do not have oxidation resistance, and the electrical conductivity gradually decreases.
Won and Wiley et al. used lactic acid and ascorbic acid to treat copper nanowires, which can effectively reduce the resistance of copper nanowire electrodes. This type of method mainly removes the oxide layer or organic molecular components on the surface of copper nanowires, and reduces the contact between copper nanowires. resistance, but it does not make the copper nanowire electrode itself have the ability to resist oxidation

Method used

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  • Antioxidant conductive copper nanowire film and preparation method and application thereof
  • Antioxidant conductive copper nanowire film and preparation method and application thereof
  • Antioxidant conductive copper nanowire film and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Prepare copper nanowires with a diameter of 20-200nm and a length of 30-200 microns; weigh 0.252g CuCl2 2H2O, 1.596g HDA (hexadecanylamine) and dissolve them in 40ml deionized water to obtain a light blue solution; then weigh 0.7g Glucose is added to the above solution, and then the solution is transferred to a three-necked flask and heated to 100°C for 7 hours to react to obtain copper nanowires, which are then fully centrifuged and washed with deionized water, absolute ethanol, and n-hexane to obtain high-quality copper. Nano wires, finally the washed copper nano wires are dispersed in n-hexane solution and preserved, the length of copper nano wires is 30-200 microns, and the diameter is about 20-200 nm. Such as figure 2 shown.

Embodiment 2

[0041] Take the 10 mg copper nanowires prepared in Example 1, the length is 30-200 microns, and the diameter is about 20-200 nm, dispersed in n-hexane solution (being a pure solvent), and suction-filtered to form a film of copper nanowires. The copper nanowire thin film was reduced in the atmosphere, the reduction temperature was 180° C., and the reduction time was 120 minutes. The reduced conductive copper nanowire film can be obtained, such as image 3 , is the SEM image of the reduced copper nanowire film, Figure 4 It is the local reduced copper nanowire film, and it can be seen from the figure that the surface of the copper nanowire is smooth.

[0042] Immerse the reduced copper nanowire film in the prepared anti-oxidation treatment solution for 2 minutes, and then dry it with nitrogen to obtain an anti-oxidation-treated conductive copper nanowire film. The anti-oxidation treatment solution is 100mL aqueous solution containing 0.1mmol formic acid, 0.1mmol copper formate ...

Embodiment 3

[0044] Take 10 mg of copper nanowires prepared in Example 1 with a diameter of 20-200 nm and a length of 30-200 microns, disperse them in n-hexane solution (pure solvent), and filter them by suction to form a film of copper nanowires. The copper nanowire film was reduced in a hydrogen and argon atmosphere, the reduction temperature was 160° C., and the reduction time was 360 minutes. The reduced conductive copper nanowire film can be obtained.

[0045] Immerse the reduced copper nanowire film in the prepared anti-oxidation treatment solution for 4 minutes, and then dry it with nitrogen to obtain the anti-oxidation-treated conductive copper nanowire film. The anti-oxidation treatment solution is 100mL solution containing 0.1mmol formic acid, 0.1mmol copper formate , 2 g of benzoimazole, pH 5. Treated copper nanowire films, such as Figure 6 As shown, it can be seen from the SEM image that a layer of benzoimazole is wrapped on the surface of the copper nanowire film. Figure ...

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Abstract

The invention discloses an antioxidant conductive copper nanowire film, and a preparation method and application thereof. The preparation method comprises the following steps of: uniformly dispersingcopper nanowires in an organic solvent or an aqueous solution to prepare a copper nanowire film, and carrying out reduction treatment on the copper nanowire film, dissolving 2-methyl phenylimidazole or benzimidazole in a formic acid-copper formate water buffer solution, and adjusting the pH value until the 2-methyl phenylimidazole or benzimidazole is just completely dissolved to obtain an antioxidant solution, and immersing the copper nanowire film subjected to reduction treatment into a prepared antioxidant solution, carrying out antioxidant treatment, and blow-drying after treatment to obtain the antioxidant conductive copper nanowire film. The prepared antioxidant nanowire film does not influence the conductivity of the copper nanowire film, also does not influence the transparency of the copper nanowire film, has a very good antioxidant effect, solves the key problem of unstable conductivity of the copper nanowire film, and the possibility that the copper nanowire film replaces ITOto be applied to the field of transparent flexible electrodes is achieved.

Description

technical field [0001] The invention belongs to the field of conductive films of metal nanowires, and relates to an anti-oxidation treatment method for copper nanowire transparent conductive film electrodes, in particular to an anti-oxidation conductive copper nanowire film and its preparation method and application. Background technique [0002] Flexible transparent electrodes are an indispensable and important part of flexible optoelectronic devices. Traditional ITO transparent conductive materials are far from meeting the development needs of flexible electronic devices due to their rigid and brittle characteristics, lack of indium resources, and high process costs. Copper nanowires, due to their excellent electrical conductivity, flexibility and low price, show great application prospects in the field of flexible transparent electrodes. However, copper nanowires are easily oxidized, which severely limits their development and application in the field of flexible transpa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01B13/00C09K15/30B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C09K15/30H01B5/14H01B13/00
Inventor 熊维伟郑芬芬晏鹏余坤袁爱华孙莎莎
Owner JIANGSU UNIV OF SCI & TECH
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