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Preparation method of supercapacitor electrode material nickel hydroxide and graphene composite

A technology of supercapacitor and nickel hydroxide, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems of low output, unpractical application, complicated process, etc. simple method effect

Inactive Publication Date: 2016-05-04
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Ni(OH) prepared by these methods 2 The output of composites with graphene is small, the process is complicated, and it cannot be practically applied

Method used

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  • Preparation method of supercapacitor electrode material nickel hydroxide and graphene composite
  • Preparation method of supercapacitor electrode material nickel hydroxide and graphene composite
  • Preparation method of supercapacitor electrode material nickel hydroxide and graphene composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add the raw material nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O) 1mmol and 40ml ethanol, and stir, make mixed solution;

[0024] (2) Add 1ml of 0.2g / ml polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (referred to as P123) aqueous solution to the above solution, and add 1ml of 0.1mg / ml graphene aqueous solution ;

[0025] (3) Heat the above mixed solution to reflux, and add 5ml ammonia water dropwise, the reaction time is 2h;

[0026] (4) After the reaction was completed, the obtained product was centrifuged, washed with deionized water and ethanol solvent, and dried.

Embodiment 2

[0028] (1) Add the raw material nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 0) 5mmol and 40ml ethanol, and stir, make mixed solution;

[0029] (2) Add 10ml of 0.2g / ml polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (referred to as P123) aqueous solution to the above solution, and add 0.1mg / ml graphene aqueous solution 5ml ;

[0030] (3) Heat the above mixed solution to reflux, and add 15ml of ammonia water dropwise, the reaction time is 5h;

[0031] (4) After the reaction was completed, the obtained product was centrifuged, washed with deionized water and ethanol solvent, and dried.

Embodiment 3

[0033] (1) Add the raw material nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 0) 5mmol and 40ml ethanol, and stir, make mixed solution;

[0034] (2) Add 10ml of 0.2g / ml polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (referred to as P123) aqueous solution to the above solution, and add 10ml of 0.1mg / ml graphene aqueous solution ;

[0035] (3) Heat the above mixed solution to reflux, and add 5ml of ammonia water drop by drop, the reaction time is 5h;

[0036] (4) After the reaction was completed, the obtained product was centrifuged, washed with deionized water and ethanol solvent, and dried.

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Abstract

The invention relates to a preparation method of supercapacitor electrode materials including nicklous hydroxide and graphene compound. The preparation method includes: (1) mixing six hydration nickel nitrate (Ni(NO->[3])2 6H->[2]O ) and solvent, stirring and obtaining mixed solution; (2) adding polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer aqueous solution into the mixed solution, adding graphene aqueous solution into the mixed solution, heating the mixed solution until backflow, adding ammonia water dip by dip, enabling the mixed solution to react for 2 to 24 hours, centrifuging, washing, drying and obtaining the nicklous hydroxide and the graphene compound. Ni (OH) ->[2] and the graphene composite electrode material prepared through the preparation method of supercapacitor electrode materials including nicklous hydroxide and graphene compound are in a plate-shaped accumulated structure, specific surface area and conductivity are improved. The preparation method of supercapacitor electrode materials including nicklous hydroxide and graphene compound is simple, green, environment-friendly, low in cost and suitable for mass production.

Description

technical field [0001] The invention belongs to the field of preparation of supercapacitor electrode materials, in particular to a method for preparing a supercapacitor electrode material nickel hydroxide and graphene composite. Background technique [0002] As we all know, with the rapid development of the global economy, the continuous consumption of fossil energy, and the increasingly serious environmental pollution, it is becoming more and more important to study a high-efficiency, low-cost, environmentally friendly, and high-performance energy conversion and storage system. Due to the advantages of high power density, short charging time and long service life, supercapacitors are widely used in electric vehicles, military, mobile communication equipment and other fields, which has attracted extensive attention of scientific researchers. Then, the main performance that determines the supercapacitor depends on the structure and composition of the electrode material. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/86
CPCY02E60/13
Inventor 胡俊青徐开兵刘倩李文尧邹儒佳李博
Owner DONGHUA UNIV
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