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Graphene/polyaniline/stannic oxide composite material applied to supercapacitor and manufacturing method thereof

A technology of supercapacitor and composite material, applied in the field of graphene/polyaniline/tin oxide composite material and its preparation, can solve the problem of high specific capacitance, achieve the effect of increasing specific capacitance, broad application prospects and ingenious conception

Active Publication Date: 2014-08-06
菏泽瑞诚塑料包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the nanoparticles loaded on the surface of graphene are covered by the polyaniline coating layer, the electrochemical effects of each component cannot be fully exerted, resulting in a specific capacitance that is not as high as expected.

Method used

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  • Graphene/polyaniline/stannic oxide composite material applied to supercapacitor and manufacturing method thereof
  • Graphene/polyaniline/stannic oxide composite material applied to supercapacitor and manufacturing method thereof
  • Graphene/polyaniline/stannic oxide composite material applied to supercapacitor and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] 1. Preparation of graphite oxide: Take flake graphite (1g), sodium nitrate (0.2g) and concentrated sulfuric acid (30ml) into a 1000ml beaker, add potassium permanganate (1g) while stirring with a stirrer, continue after adding Stir for 14h; then add deionized water (100ml) therein, and then add concentration of 30% hydrogen peroxide (10ml), at this moment, the suspension is yellow, and the solid is separated by filtration or centrifugation, and dried, namely It is graphite oxide, ready for use.

[0028] 2. A graphene / polyaniline / tin oxide composite material applied to supercapacitors, which is composed of graphene, polyaniline, and tin oxide. The polyaniline is coated on graphene, and the tin oxide grows on graphene coated with polyaniline.

[0029]3. A method for preparing a graphene / polyaniline / tin oxide composite material applied to a supercapacitor, comprising the steps of:

[0030] (1) Graphite oxide (0.005mol) was ultrasonically dispersed in deionized water (50m...

Embodiment 2

[0035] 1. Preparation of graphite oxide: Take flake graphite (1g), sodium nitrate (0.2g) and concentrated sulfuric acid (30ml) into a 1000ml beaker, add potassium permanganate (1g) while stirring with a stirrer, continue after adding Stir for 14h; then add deionized water (100ml) therein, and then add concentration of 30% hydrogen peroxide (10ml), at this moment, the suspension is yellow, and the solid is separated by filtration or centrifugation, and dried, namely It is graphite oxide, ready for use.

[0036] 2. A graphene / polyaniline / tin oxide composite material applied to supercapacitors, which is composed of graphene, polyaniline, and tin oxide. The polyaniline is coated on graphene, and the tin oxide grows on graphene coated with polyaniline.

[0037] 3. A method for preparing a graphene / polyaniline / tin oxide composite material applied to a supercapacitor, comprising the steps of:

[0038] (1) Graphite oxide (0.005mol) was ultrasonically dispersed in deionized water (50...

Embodiment 3

[0043] 1. Put flake graphite (3g), sodium nitrate (1.1g) and concentrated sulfuric acid (90ml) into a 1000ml beaker, add potassium permanganate (4.5g) while stirring in a stirrer, and continue stirring for more than 12 hours after adding; Add deionized water (350ml) thereto again, then add concentration and be 30% hydrogen peroxide (35ml), this moment suspension liquid is yellow, adopts the method for filtration or centrifugation, solid is separated, dry and stand-by.

[0044] 2. A graphene / polyaniline / tin oxide composite material applied to supercapacitors, which is composed of graphene, polyaniline, and tin oxide. The polyaniline is coated on graphene, and the tin oxide grows on graphene coated with polyaniline.

[0045] 3. A method for preparing a graphene / polyaniline / tin oxide composite material applied to a supercapacitor, comprising the steps of:

[0046] (1) Graphite oxide (0.005mol) was ultrasonically dispersed in deionized water (50ml) for 30 minutes, to which anilin...

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Abstract

The invention relates to a graphene / polyaniline / stannic oxide composite material applied to a supercapacitor. The graphene / polyaniline / stannic oxide composite material applied to the supercapacitor is formed by compounding graphene, polyaniline and stannic oxide, wherein the polyaniline is wrapped around the graphene, and the stannic oxide is grown on the graphene wrapped with the polyaniline. The obtained graphene / polyaniline / stannic oxide composite material takes full advantages of the functions of all the components, and not only makes use of the double-electrode-layer capacitive property of the graphene, but also makes use of the oxidoreduction electrochemical property of the polyaniline and the graphene, the specific capacitance of graphene-based electrode materials is increased, the cycle life reaches 5000 times, the electrochemical performance of graphene-based capacitors is improved greatly, and the graphene / polyaniline / stannic oxide composite material has the wider application prospects in the fields such as supercapacitors and solar cells.

Description

technical field [0001] The invention relates to a graphene / polyaniline / tin oxide composite material which can be used as an electrode of a supercapacitor and a preparation method thereof. Background technique [0002] Supercapacitor, a fast charging / discharging energy storage device between ordinary capacitors and secondary batteries, has the characteristics of short charging time, long service life, good temperature characteristics, energy saving and green environmental protection, etc. It is used in military and There are huge application prospects in civilian use. Supercapacitor electrode materials are divided into two categories, one is supercapacitor materials with electric double layer energy storage properties, such materials include carbon materials such as activated carbon, carbon fiber, carbon nanotube (CNT) and graphene sheets, which have The specific capacitance of 10 to 200F / g has a long charge and discharge cycle life, which can reach more than 10,000 times, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/86
CPCY02E60/13
Inventor 张芳杜飞鹏
Owner 菏泽瑞诚塑料包装有限公司
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