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Method for synthesizing graphene/nickel nano-composite material at room temperature

A technology for nanocomposite materials and synthetic graphite, which is applied in the field of synthesis of graphene and nickel nanocomposite materials, can solve the problems of complex post-treatment process, toxic and side effects of raw materials, large energy consumption, etc., achieve good reduction effect, easy process control, The effect of shortening the reaction time

Inactive Publication Date: 2015-07-22
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the synthesis method of graphene and nickel nanocomposites mainly adopts the chemical reduction method, which has the advantages of easy operation and relatively low production cost, but the reducing agent needs to use hydrazine hydrate and its derivatives, and the raw materials have toxic side effects. It is complex and needs to be heated by high-temperature water heat, which consumes a lot of energy

Method used

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  • Method for synthesizing graphene/nickel nano-composite material at room temperature
  • Method for synthesizing graphene/nickel nano-composite material at room temperature
  • Method for synthesizing graphene/nickel nano-composite material at room temperature

Examples

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Effect test

Embodiment 1

[0030] 1) Dissolve 0.020g of graphene oxide in 20mL of deionized water, and disperse it ultrasonically for 1.5h at a power of 150W to obtain a graphene oxide solution;

[0031] 2) Add 0.20g of nickel chloride hexahydrate powder to the graphene oxide solution prepared in step 1), continue to process for 1h under ultrasonic conditions of 150W power, mix well, and obtain a mixed solution;

[0032] 3) Dissolve 0.20g of sodium borohydride powder in 5mL of deionized water, and inject it dropwise into the mixed solution prepared in step 2) with a syringe (0.5mL each time, with a dropping rate of 2 drops / min), ultrasonically assisted Carry out the reduction reaction, the ultrasonic power is 150W, and the ultrasonic time is 20min; after the reaction is completed, the black magnetic powder is washed 3 times with deionized water, and then the black magnetic powder is separated by a magnet, and dried in vacuum (101kPa) at room temperature for 36h to obtain graphite ene / nickel nanocomposit...

Embodiment 2

[0041] 1) Dissolve 0.010g of graphene oxide in 20mL of deionized water, and disperse it ultrasonically for 1 hour at a power of 100W to obtain a graphene oxide solution;

[0042] 2) Add 0.10 g of nickel nitrate hexahydrate powder to the graphene oxide solution prepared in step 1), and continue to process for 30 min under ultrasonic conditions of 100W power to obtain a mixed solution;

[0043]3) Dissolve 0.50g of potassium borohydride powder in 5mL of deionized water, and inject it dropwise into the mixed solution prepared in step 2) with a syringe (0.5mL is added dropwise at a rate of 5 drops / min), ultrasonically assisted Carry out the reduction reaction, the ultrasonic power is 100W, and the ultrasonic time is 10min; after the reaction is completed, wash with ethanol twice, rinse the black magnetic powder once with deionized water, then use a magnet to separate the black magnetic powder, and vacuum it at room temperature (50KPa) dry 12h, obtain graphene / nickel nanocomposite m...

Embodiment 3

[0046] 1) Dissolve 0.015g of graphene oxide in 20mL of deionized water, and disperse it ultrasonically for 70min at a power of 130W to obtain a graphene oxide solution;

[0047] 2) Add 0.15g nickel acetate tetrahydrate powder to the graphene oxide solution prepared in step 1), and continue to process for 40min under ultrasonic conditions of 130W power to obtain a mixed solution;

[0048] 3) Dissolve 0.30g of sodium borohydride powder in 5mL of deionized water, and inject it dropwise into the mixed solution prepared in step 2) with a syringe (0.5mL each time, with a dropping rate of 4 drops / min), ultrasonically assisted Carry out the reduction reaction, the ultrasonic power is 130W, and the ultrasonic time is 15min; after the reaction is completed, wash the black magnetic powder with deionized water for 3 times, then use a magnet to separate the black magnetic powder, and dry it in vacuum (80KPa) at room temperature for 24h to obtain graphite ene / nickel composite, its SEM image...

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Abstract

The invention discloses a method for synthesizing a graphene / nickel nano-composite material at room temperature. The method comprises the following steps: uniformly dispersing graphene oxide in ultrasonic in deionized water to obtain a graphene oxide solution; adding a bivalent nickel salt, and further performing ultrasonic treatment to obtain a mixed solution I; dissolving sodium borohydride or potassium borohydride taken as a reducing agent in deionized water to obtain a mixed solution II, dropwise adding the mixed solution II into the mixed solution I, and further performing ultrasonic treatment for a reduction reaction at room temperature; cleaning and drying a product of the reduction reaction to obtain the graphene / nickel nano-composite material. The method is simple to operate, easy in process control, mild in synthesis condition and very short in preparation period; the selected reducing agent is non-toxic, and has a good reducing effect on the graphene oxide; the reducing reaction can be performed at room temperature, so that the energy consumption is low, the production cost is low and no environment pollution is caused; therefore, the method is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for synthesizing graphene and nickel nanometer composite materials, in particular to a method for synthesizing graphene and nickel nanometer composite materials at room temperature. Background technique [0002] Graphene has a unique lamellar structure and excellent electrical, mechanical, and chemical properties, and is widely used in transparent conductive electrodes, electronic devices, supercapacitors, biological devices, cell markers, and capacity reserves. The composites of graphene-based nanomaterials exhibit excellent performance in catalysis, magnetism, light and electricity, mainly including graphene / metal nanoparticle composites, graphene / metal oxide composites and graphene / conductive polymer composites. Material. [0003] Nickel nanomaterial is a magnetic material with excellent magnetic, electrical, optical and catalytic properties. Nano-nickel oxide / graphene composite material has the characteristics of...

Claims

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Application Information

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IPC IPC(8): H01M4/38H01M4/525H01M4/1393H01M4/1397H01M4/1391H01M4/587H01M4/1395B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/139H01M4/362H01M4/583H01M10/0525Y02E60/10
Inventor 王力霞赵玉峰姚文生
Owner BOHAI UNIV
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