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Preparation method of nickel-graphene complex phase

A graphene and graphene nanosheet technology, applied in electrolytic coatings, coatings, etc., can solve problems such as oxygen functional groups cannot be completely reduced, metal-graphene complex phase influence, limiting graphene performance, etc., to achieve complex phase Good mechanical properties and corrosion resistance, wide application range, avoid the effect of reduction process

Inactive Publication Date: 2014-07-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the reduction effect of GO is limited by the nickel matrix, which cannot reduce GO to the maximum extent, resulting in the incomplete reduction of the oxygen functional groups in the final nickel-graphene composite phase, which will greatly limit the graphene in the composite phase. Second, the reduction process of GO involves a high temperature process, and the reduction process will have a certain impact on the formation of the final metal-graphene composite phase, resulting in poor controllability of the process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) NaOH, Na 3 PO 4 、Na 2 CO 3 and Na 2 SiO 3 According to the mass ratio of 3:3:3:1, it is mixed and configured into an alkaline solution. After the square iron sheet is washed with the above alkaline solution and deionized water in sequence, it is activated in hydrochloric acid with a molar concentration of 30% for 10 minutes, and then deionized water rinse;

[0017] 2) Dissolve nickel sulfate and nickel chloride in water and mix them to obtain a mixed solution; dissolve boric acid and sodium lauryl sulfate in water respectively, and add them to the mixed solution of nickel sulfate and nickel chloride successively, and stir evenly to obtain nickel Plating solution: nickel sulfate in the nickel plating solution is 290g / L, nickel chloride is 50g / L, boric acid is 40g / L, and sodium lauryl sulfate is 0.3g / L;

[0018] 3) Wet the single-layer graphene nanosheets with a small amount of the nickel plating solution prepared in step 2) and ultrasonically, and then add it to...

Embodiment 2

[0022] 1) NaOH, Na 3 PO 4 、Na 2 CO 3 and Na 2 SiO 3 According to the mass ratio of 3:3:3:1, it is mixed and configured into an alkaline solution. After cleaning the square stainless steel sheet with the above alkaline solution and deionized water in sequence, it is activated in hydrochloric acid with a molar concentration of 5% for 5 minutes, and then rinsed with ionized water. ;

[0023] 2) Dissolve nickel sulfate and nickel chloride in water and mix them to obtain a mixed solution; dissolve boric acid and sodium lauryl sulfate in water respectively, and add them to the mixed solution of nickel sulfate and nickel chloride successively, and stir evenly to obtain nickel Plating solution: Nickel sulfate in the nickel plating solution is 240g / L, and nickel chloride is 45g / L, and boric acid is 30g / L, and sodium lauryl sulfate is 1.5g / L;

[0024] 3) Wet the multi-layer graphene nanosheets with a small amount of nickel plating solution prepared in step 2) and ultrasonically, t...

Embodiment 3

[0028] 1) NaOH, Na 3 PO 4 、Na 2 CO 3 and Na 2 SiO 3 According to the mass ratio of 3:3:3:1, it is mixed and configured into an alkaline solution. After the round iron sheet is washed with the above alkaline solution and deionized water in sequence, it is activated in hydrochloric acid with a molar concentration of 30% for 5 minutes, and then deionized water rinse;

[0029] 2) Dissolve nickel sulfate and nickel chloride in water and mix them to obtain a mixed solution; dissolve boric acid and sodium lauryl sulfate in water respectively, and add them to the mixed solution of nickel sulfate and nickel chloride successively, and stir evenly to obtain nickel Plating solution: nickel sulfate in the nickel plating solution is 300g / L, nickel chloride is 40g / L, boric acid is 50g / L, and sodium lauryl sulfate is 0.5g / L;

[0030] 3) Wet the single-layer graphene nanosheets with a small amount of the nickel plating solution prepared in step 2) and ultrasonically, and then add it to t...

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Abstract

The invention discloses a preparation method of a nickel-graphene complex phase, which comprises the following steps: cleaning a base plate with an alkali solution, and activating with hydrochloric acid; 2) preparing nickel sulfate, nickelous chloride, boric acid and a surfactant into a nickel plating solution; 3) adding graphene nanosheets into the nickel plating solution to obtain an electroplating solution containing graphene nanosheets; and 4) electroplating in the electroplating solution by using a nickel sheet as an anode and the base plate as a cathode to obtain the nickel-graphene complex phase. The graphene and nickel are directly compounded, thereby avoiding the GO (graphene oxide) reduction process in the traditional method. The method has the advantages of simple technique, favorable controllability and wide application range; and the prepared nickel-graphene complex phase has favorable mechanical properties and corrosion resistance.

Description

technical field [0001] The invention relates to a preparation method of nickel-graphene composite phase. Background technique [0002] Adding the second phase to the nickel coating has been studied for a long time to improve the hardness, wear resistance and corrosion resistance of steel materials through the effects of grain strengthening and dispersion strengthening, mainly through the combination of the second phase with excellent mechanical properties and electroplating The nickel layer is compounded, so that the performance of the second phase is reflected in the nickel matrix, thereby obtaining a metal composite phase with excellent performance, and a nickel composite phase with good mechanical properties and corrosion resistance. [0003] Most of the existing nickel-graphene composite phases are composed of graphene oxide (GO) and nickel, and then the GO is reduced to graphene to obtain the nickel-graphene composite phase. First of all, the reduction effect of GO is ...

Claims

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Application Information

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IPC IPC(8): C25D15/00
Inventor 徐杨任招娣骆季奎俞滨
Owner ZHEJIANG UNIV
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