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Method for preparing graphene composite coating

A composite material, graphene technology, applied in coatings, electrolytic coatings, etc., can solve the problems of water-based electroplating pollution development and limitation, and achieve the effects of good electrical conductivity, uniform dispersion, easy dissolution and uniform dispersion

Pending Publication Date: 2019-12-31
SICHUAN JUCHUANG SHIMOXI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can indeed deposit graphene-composite copper coatings, the development of traditional water-based electroplating is limited due to environmental pollution, and the simultaneous deposition of graphene oxide and its conversion into reduced graphene in the water-based electroplating metal process requires Avoid hydropower explaining hydrogen, so far no actual production technology can overcome these difficulties

Method used

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  • Method for preparing graphene composite coating
  • Method for preparing graphene composite coating
  • Method for preparing graphene composite coating

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Choline chloride and ethylene glycol with a molar ratio of 1:1 are selected as the ionic liquid; the ionic liquid contains graphene oxide, and the concentration of graphene oxide is 0.2g / L; the ionic liquid contains copper ions, copper ions The concentration is 1mM.

[0045] The above-mentioned ionic liquid is used as the electroplating solution, the copper sheet is selected as the cathode substrate, and the platinum sheet is selected as the anode. A power supply that can provide pulses is used to apply current-controlled pulses. The duration of the positive pulse period is 40ms, and the current density is -0.5ASD, and the duration of the pause period is 60ms. The ionic liquid was stirred without a stirrer during plating.

[0046] During pulse plating, current density and corresponding voltage changes, see figure 1 and figure 2 shown. The Raman spectrogram of the graphene composite material coating prepared in this embodiment, please refer to Figure 7 shown.

Embodiment 2

[0048] Choline chloride and ethylene glycol with a molar ratio of 1:2 are selected as the ionic liquid; the ionic liquid contains graphene oxide, and the concentration of graphene oxide is 0.4g / L; the ionic liquid contains copper ions, copper ions The concentration is 10mM.

[0049] The above-mentioned ionic liquid is used as the electroplating solution, the copper sheet is selected as the cathode substrate, and the platinum sheet is selected as the anode. A power supply that can provide pulses is used to apply current-controlled pulses. The duration of the positive pulse period is 40ms, and the current density is -0.75ASD, and the duration of the pause period is 60ms. During electroplating, a stirrer was used to stir the ionic liquid, and the stirring speed was 50 r / min.

[0050] During pulse plating, current density and corresponding voltage changes, see image 3 and Figure 4 shown. The Raman spectrogram of the graphene composite material coating prepared in this embodi...

Embodiment 3

[0052] Choline chloride and ethylene glycol with a molar ratio of 1:2 are selected as the ionic liquid; the ionic liquid contains graphene oxide, and the concentration of graphene oxide is 0.6g / L; the ionic liquid contains copper ions, copper ions The concentration is 20mM.

[0053] The above-mentioned ionic liquid is used as the electroplating solution, the copper sheet is selected as the cathode substrate, and the platinum sheet is selected as the anode. A power supply that can provide pulses is used to apply current-controlled pulses. The duration of the positive pulse period is 40ms, and the current density is -0.75ASD, and the duration of the pause period is 60ms. During electroplating, a stirrer was used to stir the ionic liquid, and the stirring speed was 50 r / min.

[0054] During pulse plating, current density and corresponding voltage changes, see image 3 and Figure 4 shown. The Raman spectrogram of the graphene composite material coating prepared in this embodi...

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Abstract

The invention relates to the technical field of material surface engineering, and provides a method for preparing a graphene composite coating. The method particularly comprises the steps that graphene oxide is dispersed in ionic liquid; the ionic liquid is used as an electroplating solution, and the graphene composite coating is deposited on a cathode substrate by a current controlled pulse, wherein the current controlled pulse comprises a forward pulse period of which current is negative on a deposition surface, and a pause period of which the current is zero; and alternatively, the ionic liquid is used as the electroplating solution, and the graphene composite coating is deposited on the cathode substrate by a voltage controlled pulse, wherein the voltage controlled pulse comprises a forward pulse period of which voltage is negative on the deposition surface, and a pause period of which the voltage is zero. Compared with the prior art, the method for preparing the graphene compositecoating is low in cost and simple in process, does not requirehigh-temperature and high-vacuum preparation environments and the like, can be applied to large-area graphene composite coating or film production, and can truly realize green production.

Description

technical field [0001] The invention relates to the technical field of material surface engineering, in particular to a method for preparing a graphene composite coating. Background technique [0002] Graphene is ultra-thin graphite containing only a single atomic layer or a few atomic layers, and each atomic layer consists of sp 2 Hybridized carbon atoms form a regular hexagonal grid and a two-dimensional honeycomb structure. It was first prepared and synthesized by Kostya Novoselov and Andre Geim of the University of Manchester in 2004 using a simple method called mechanical microstress technology. characterization. [0003] Graphene is the strongest substance known to man and has many novel physical properties. Graphene is currently known as the material with the best conductivity at room temperature, and its conductivity far exceeds that of ordinary conductors. In addition, graphene can also be used to make composite materials, and its composite materials have been us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00C25D5/18C25D3/58C25D3/56
CPCC25D3/56C25D3/58C25D5/18C25D15/00
Inventor 黄迎春刘焕明郑兴平
Owner SICHUAN JUCHUANG SHIMOXI TECH CO LTD
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