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Preparation method of graphene/copper composite material

A composite material, graphene technology, applied in metal material coating process, liquid chemical plating, coating and other directions, can solve the problems of toxicity, high experimental conditions, high cost of organic reducing agents, and achieve mild and safe reaction conditions. , Simplified preparation process, high reduction effect

Inactive Publication Date: 2014-04-23
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The chemical synthesis method has high preparation efficiency, but the commonly used reducing agents (such as hydrazine hydrate) have certain toxicity, require high experimental conditions, and the cost of organic reducing agents is also high

Method used

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  • Preparation method of graphene/copper composite material
  • Preparation method of graphene/copper composite material
  • Preparation method of graphene/copper composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Present embodiment also relates to the preparation method of graphene / copper composite material, described method comprises the steps:

[0029] Step 1: Take said 5g copper sulfate pentahydrate, 0.5g nickel sulfate, 16g citric acid, 25g boric acid respectively and add in the beaker that deionized water 600-800ml is housed to prepare mixed solution A, stir at normal temperature;

[0030] Step 2: Place the above mixed solution A in a magnetic stirring water bath and heat at 50°C, add graphene oxide solution (mass percentage concentration is 10mg / L) and stir to make mixed solution B;

[0031] Step 3: Add sodium hypophosphite solution (2g / L by mass percentage concentration) to the mixed solution B (wherein the solution temperature is 65°C), which contains 2g of sodium hypophosphite, stir for accelerated reaction, and ultrasonically disperse treatment, a uniformly dispersed graphene / copper composite material solution can be obtained;

[0032] Step 4: Repeated suction filtrat...

Embodiment 2

[0034] Present embodiment also relates to the preparation method of graphene / copper composite material, described method comprises the steps:

[0035] Step 1: Take said 10g copper sulfate pentahydrate, 1g nickel sulfate, 23g citric acid, 35g boric acid respectively and add in the beaker that deionized water 600-800ml is housed to prepare mixed solution A, stir at normal temperature;

[0036] Step 2: Place the above mixed solution A in a magnetically stirred water bath and heat it at 45°C, add graphene oxide solution (5 mg / L by mass percentage concentration) and stir to make mixed solution B;

[0037] Step 3: Add sodium hypophosphite solution to the mixed solution B (wherein the solution temperature is 65°C), which contains sodium hypophosphite (mass percentage concentration is 5g / L), stir for accelerated reaction, ultrasonic dispersion treatment , a uniformly dispersed graphene / copper composite material solution can be obtained;

[0038] Step 4: Repeated suction filtration of...

Embodiment 3

[0040] This present embodiment also relates to the preparation method of graphene / copper composite material, described method comprises the steps:

[0041] Step 1: Take said 8g copper sulfate pentahydrate, 0.8g nickel sulfate, 20g citric acid, 30g boric acid respectively and add in the beaker that deionized water 600-800ml is housed to prepare mixed solution A, stir at normal temperature;

[0042] Step 2: Put the above mixed solution A in a magnetic stirring water bath and heat it at 60°C, add graphene oxide solution (mass percentage concentration is 20mg / L), stir to make mixed solution B;

[0043] Step 3: Add sodium hypophosphite solution (3g / L by mass percentage) to the mixed solution B (the solution temperature is 75°C), stir, perform accelerated reaction, and ultrasonically disperse to obtain uniform dispersion Graphene / copper composite material solution;

[0044] Step 4: Repeated suction filtration of the graphene / copper composite solution with a microporous filter membr...

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Abstract

The invention discloses a preparation method of a graphene / copper composite material. The preparation method includes the following steps: step 1, weighing copper sulfate pentahydrate, nickel sulfate, citric acid and boric acid so as to prepare a mixed solution A, and stirring the mixed solution A; step 2, placing the mixed solution A in a magnetic stirring water bath kettle for heating the mixed solution A, then adding graphene oxide solution into the mixed solution A, stirring, and preparing a mixed solution B; step 3, adding sodium hypophosphite solution into the mixed solution B, stirring, and performing an accelerated reaction and ultrasound dispersion treatment so as to obtain a solution of the graphene / copper composite material which is evenly dispersed; step 4, performing repeated suction filtration on the solution by using a microfiltration membrane, repeatedly washing filter residues until PH (potential of hydrogen) value of the filter residues is neutral, performing vacuum drying, and performing reduction so as to obtain the composite graphene / copper composite material. The preparation method of the graphene / copper composite material is simple, convenient to operate, and low in cost, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, in particular to a preparation method of graphene / copper composite material. Background technique [0002] Graphene, that is, single-layer graphite sheet, refers to the sp 2 Hybridized carbon atoms are closely arranged to form a honeycomb crystal structure with a thickness of only one atom. The chemical bond between carbon atoms is a strong σ bond, and its covalent bond will make graphene have extremely high strength (130GPa), which is more than 100 times that of ordinary rigid materials; Young's modulus can reach up to 1100GPa, which is comparable to carbon Nanotubes are comparable. In addition, the carrier mobility of graphene is 250000cm 2 / (VS) is about 140 times the electron mobility in silicon, and the thermal conductivity is 5000W m -1 K -1 , 3 times that of diamond. Based on these characteristics, graphene has shown great application prospects in various field...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F9/24C23C18/40
Inventor 刘磊吴忠张琪沈彬胡文彬邓意达刘德荣
Owner SHANGHAI JIAO TONG UNIV
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