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Alkaline graphene-nickel electroplating liquid, and preparation method and application thereof

A technology of nickel electroplating solution and graphene solution, applied in electrolytic coatings, coatings and other directions, can solve the problems of uneven distribution of graphene, bright coating surface, poor flatness, loss of material surface protection, etc., and achieve the in-situ preparation method. Controllable, low cost, good protective effect

Active Publication Date: 2016-06-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with these techniques, graphene is simply attached to the surface of the material and is easily removed, thereby losing the protection of the surface of the material
[0003] Recently, researchers have found that a composite coating composed of graphene and metal by liquid deposition methods such as electroplating or chemical plating can eliminate the above problems that graphene is easy to eliminate [for example, please refer to CN103589282A; RSCadvances.2014; 4: p36245-36252], but the distribution of graphene in the obtained graphene composite coating is uneven, and the brightness and flatness of the coating surface are also poor, and the corrosion current is at 10 -6 A / cm 2 magnitude

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  • Alkaline graphene-nickel electroplating liquid, and preparation method and application thereof
  • Alkaline graphene-nickel electroplating liquid, and preparation method and application thereof
  • Alkaline graphene-nickel electroplating liquid, and preparation method and application thereof

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[0033] Another aspect of the present invention provides a kind of preparation method of alkaline graphene-nickel electroplating solution, comprising:

[0034] providing a nickel electroplating solution comprising a nickel salt and a complexing agent;

[0035] Provide electroplating graphene solution, described electroplating graphene solution comprises stabilizer, reducing agent and the graphene that is uniformly dispersed in described electroplating graphene solution;

[0036] And, uniformly mixing the nickel electroplating solution and the graphene electroplating solution, and then adjusting the pH value of the mixed solution to 9-14 with an alkaline substance, so as to obtain the alkaline graphene-nickel electroplating solution.

[0037] Another aspect of the present invention provides the use of the alkaline graphene-nickel electroplating solution to prepare a graphene-nickel composite coating on the metal surface of an article.

[0038] The aforementioned items may be me...

Embodiment 1

[0058] In the present embodiment, the solvent of alkaline graphene-nickel electroplating solution is deionized water, and comprises: nickel sulfate 20g / L, hydrazine hydrate 5g / L, boric acid 10g / L, dimethyl sulfoxide 20g / L, Graphene 1mg / L.

[0059] Use above-mentioned plating solution to prepare the technique of graphene-nickel composite coating as follows:

[0060] (1) The metal substrate is low-carbon steel; the surface of the metal substrate is pretreated to remove oil and oxide film. The specific process is: add an appropriate amount of sodium lauryl sulfate to a NaOH solution with a concentration of 10% by mass to obtain a mixed solution, the concentration of sodium lauryl sulfate in the mixed solution is 1g / L, put the metal substrate into the mixed solution, wash at a cleaning temperature of 50°C for 8 minutes, and then use mechanical polishing to oxidize the surface of the metal substrate Membrane removal treatment;

[0061] (2) Use deionized water to prepare nickel su...

Embodiment 2

[0068] In this embodiment, the solvent of the alkaline graphene-nickel electroplating solution is deionized water, and contains: nickel chloride 15g / L, citric acid 10g / L, dimethylaminoborane 6g / L, dimethylaminoborane Formamide 10g / L, graphene 0.1mg / L.

[0069] Use above-mentioned alkaline graphene-nickel electroplating solution to prepare the technique of graphene-nickel composite coating as follows:

[0070] (1) The metal substrate is low-carbon steel; the surface of the metal substrate is pretreated to remove oil and oxide film. The specific process is: add an appropriate amount of sodium lauryl sulfate to a KOH solution with a concentration of 15% by mass to obtain a mixed Solution, the concentration of sodium lauryl sulfate in the mixed solution is 5g / L, the metal substrate is put into the mixed solution, cleaned at a cleaning temperature of 60°C for 5 minutes, and then the surface of the metal substrate is oxidized by chemical polishing Membrane removal treatment;

[00...

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Abstract

The invention discloses an alkaline graphene-nickel electroplating liquid, and a preparation method and an application thereof. The electroplating liquid comprises a nickel salt, a complexing agent, water as a solvent, a reducing agent, a stabilizer, graphene and the like; the graphene is uniformly dispersed in the electroplating liquid, and the electroplating liquid is alkaline. A method for preparing a graphene-nickel composite plating layer by using the electroplating liquid comprises the steps that a to-be-electroplated workpiece as a cathode and a pure nickel piece as an anode are placed in the electroplating liquid and subjected to electroplating operation, and thus the plating layer is formed on a metal surface of the workpiece. In the electroplating liquid, any surfactant does not require to be added, and graphene can be uniformly dispersed and stably exist; with use of the electroplating liquid, the graphene-nickel composite plating layer is formed by means of a simple electrodeposition process, no complex equipment is required, the process is simple and controllable, the cost is low, the electroplating liquid is suitable for production with large area, the obtained plating layer is smooth and compact, the graphene is uniformly distributed, and the obtained plating layer has excellent comprehensive properties and has a better protection effect to a substrate.

Description

technical field [0001] The invention relates to an electroplating solution, in particular to a graphene-nickel composite electroplating solution, a preparation method and an application thereof, and belongs to the technical field of electroplating. Background technique [0002] Graphene, as a two-dimensional carbon material, was awarded the Nobel Prize in Chemistry in 2010 by a professor at the University of Manchester for his research on graphene. In recent years, due to the many advantages of graphene, such as high electrical conductivity, high thermal conductivity, high strength and high modulus, and excellent gas barrier properties, graphene has great application prospects in many aspects. Due to the excellent chemical inertness and gas barrier properties of graphene, it can protect the base metal very well. A recent study reported that depositing graphene once on the metal surface can reduce the corrosion current of the metal substrate by several orders of magnitude [Z...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00C25D3/12
Inventor 曾志翔于全耀刘刚乌学东薛群基曹慧军
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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