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Preparation method of cobalt molybdate and graphene nanocomposite

A nano-composite material and graphene technology, which is applied in the field of preparation of cobalt molybdate and graphene nano-composite materials, achieves the effect of simple and easy operation, low cost, and solving difficulties in large-scale application

Inactive Publication Date: 2014-05-21
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, about graphene and CoMoO 4 There are still relatively few studies on the preparation methods of complexes

Method used

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  • Preparation method of cobalt molybdate and graphene nanocomposite
  • Preparation method of cobalt molybdate and graphene nanocomposite
  • Preparation method of cobalt molybdate and graphene nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Disperse 10mg graphene oxide in 5ml deionized water, ultrasonic for 4h;

[0026] (2) Add CoCl to the graphene oxide solution after ultrasonication 2 ·6H 2 O2mmol and deionized water 40ml, stirred for 30min;

[0027] (3) Add Na to the above solution 2 MoO 4 2H 2 02mmol, continue to stir for 5h; then move into a 50ml polytetrafluoroethylene reactor, and react at 120°C for 15h;

[0028] (4) After the reaction, cool to room temperature, centrifuge the obtained product, wash with deionized water and ethanol solvent respectively, and dry.

Embodiment 2

[0030] (1) Disperse 10mg graphene oxide in 5ml deionized water, ultrasonic for 4h;

[0031] (2) Add CoCl to the graphene oxide solution after ultrasonication 2 ·6H 2 O2mmol and deionized water 40ml, stirred for 30min;

[0032] (3) Add Na to the above solution 2 MoO 4 2H 2 02mmol, continue to stir for 5h; then move into a 50ml polytetrafluoroethylene reactor, and react at 180°C for 15h;

[0033] (4) After the reaction, cool to room temperature, centrifuge the obtained product, wash with deionized water and ethanol solvent respectively, and dry.

Embodiment 3

[0035] (1) Disperse 30mg graphene oxide in 5ml deionized water, ultrasonic for 4h;

[0036] (2) Add CoCl to the graphene oxide solution after ultrasonication 2 ·6H 2 O2mmol and deionized water 40ml, stirred for 30min;

[0037] (3) Add Na to the above solution 2 MoO 4 2H 2 O2mmol, continued to stir for 5h; then moved into a 50ml polytetrafluoroethylene reactor and reacted at 180°C for 15h.

[0038] (4) After the reaction, cool to room temperature, centrifuge the obtained product, wash with deionized water and ethanol solvent respectively, and dry.

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Abstract

The invention relates to a preparation method of a cobalt molybdate and graphene nanocomposite. The method comprises the following steps: (1) dispersing graphene oxide into deionized water for ultrasound; (2) adding CoCl26H2O and the deionized water into a graphene oxide solution after the ultrasound completion, and stirring; (3) adding Na2MoO4.2H2O into the above solution, continuously stirring, and then adding the solution into a reaction kettle to react for 8-15h at 120-180 DEG C; and (4) after the reaction, cooling to room temperature, washing a centrifuged product with the deionized water and an ethanol solvent respectively, and drying to obtain the cobalt molybdate and graphene nanocomposite. The experimental method provided by the invention is more convenient to operate, lower in cost, and free from environmental pollution, so that the method is applicable to mass production.

Description

technical field [0001] The invention belongs to the field of supercapacitor electrode materials, in particular to a method for preparing a cobalt molybdate and graphene nanocomposite material. Background technique [0002] In recent years, due to the dwindling reserves of fossil energy such as petroleum and the ecological threats brought about by global warming, people have devoted themselves to seeking alternative energy storage and conversion systems. With the emergence of a large number of portable electronic products (such as mobile phones, notebook computers, etc.) and people's urgent demand for power sources for electric vehicles, the research and development of new high-energy chemical power sources has developed rapidly in recent years. High energy storage systems with high energy density, high safety, and low cost have become a top priority for portable electronics related technologies and electric vehicle power systems. Therefore, supercapacitors that can possess ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/86B82Y40/00
Inventor 胡俊青朝洁徐开兵刘倩安磊
Owner DONGHUA UNIV
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