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Preparation method of carbon nano-tube super capacitor

A technology of supercapacitors and carbon nanotubes, which is applied in the manufacture of hybrid/electric double-layer capacitors, etc., can solve the problems of chemical batteries polluting the environment, short service life, and poor temperature characteristics, and achieve high energy density, low raw material cost, and quality light effect

Active Publication Date: 2016-01-06
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they have inherent short lifespan, poor temperature characteristics, chemical battery pollution, high cost and other fatal weaknesses, and there has been no better solution.

Method used

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  • Preparation method of carbon nano-tube super capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A carbon nanotube yarn supercapacitor, its preparation method is as follows:

[0029] A platinum wire with a diameter of 15 microns and a carbon nanotube yarn with a diameter of 20 microns are intertwined to form a double-ply yarn (denoted as Pt / CNT-1520); 0.2g aniline, 0.3g ammonium persulfate, 16g high chlorine After mixing acid, 16g of deionized water and 4g of absolute ethanol evenly, stick a Pt / CNT-1520 double-ply yarn with a length of about 15 cm on a support and put it into the above mixed solution. The reaction was stirred for 48 hours, and polyaniline was grown in situ on the surface of the Pt / CNT-1520 double-ply yarn to obtain a composite yarn (denoted as Pt / CNT / PANI-1520A), and then the composite yarn was carefully taken out with tweezers, and deionized Rinse the surface with water, and dry it in vacuum to remove water; soak two dried Pt / CNT / PANI-1520A composite yarns in polyvinyl alcohol-phosphoric acid sol for 1 minute, slowly pull out, and the surface of t...

Embodiment 2

[0032] A carbon nanotube yarn supercapacitor, its preparation method is as follows:

[0033] A gold wire with a diameter of 12 microns and a carbon nanotube yarn with a diameter of 15 microns are intertwined to form a double-ply yarn (referred to as Au / CNT-1215); 0.2g aniline, 0.5g ammonium persulfate, 24g high chloride After mixing acid, 10g deionized water and 6g absolute ethanol evenly, stick an Au / CNT-1215 double-ply yarn with a length of about 15 cm on a support and put it into the above mixed solution, and keep it at -15°C The reaction was stirred for 40 hours, and polyaniline was grown in situ on the surface of the Au / CNT-1215 double-ply yarn to obtain a composite yarn (referred to as Au / CNT / PANI-1215A), and then the composite yarn was carefully taken out with tweezers, and deionized Rinse the surface with water, and vacuum dry to remove the water; soak two dried Au / CNT / PANI-1215A composite yarns in the polyvinyl alcohol-phosphate sol for 1 minute, slowly pull out, and ...

Embodiment 3

[0036] A carbon nanotube yarn supercapacitor, its preparation method is as follows:

[0037] A silver wire with a diameter of 50 microns and a carbon nanotube yarn with a diameter of 20 microns are intertwined to form a double-ply yarn (referred to as Ag / CNT-5020); 0.2g aniline, 0.4g ammonium persulfate, 30g high chloride After mixing acid, 30g deionized water and 8g absolute ethanol evenly, stick a Ag / CNT-5020 double-ply yarn with a length of about 15 cm on a support and put it into the above mixed solution. The reaction was stirred for 36 hours, and polyaniline was grown in situ on the surface of the Ag / CNT-5020 double-ply yarn to obtain a composite yarn (referred to as Ag / CNT / PANI-5020A), and then the composite yarn was carefully taken out with tweezers, and deionized Rinse the surface with water, and vacuum dry to remove moisture; soak two dried Ag / CNT / PANI-5020A composite yarns in polyvinyl alcohol-phosphoric acid sol for 1 minute, slowly pull out, and the surface of the ...

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Abstract

The invention belongs to the preparation technical field of capacitors and discloses a preparation method of a carbon nano-tube super capacitor. The carbon nano-tube super capacitor is of a one-dimensional linear structure and is composed of metal wires, carbon nanotube yarns and conductive polyaniline. The preparation method comprises the steps of 1, twisting metal wires together with carbon nanotube yarns to form M-CNT yarns of a covering yarn structure, wherein double strands of yarns or metal wires are adopted as a core and the surface of the core is coated with carbon nanotube yarns; 2, putting M / CNT yarns or M-CNT yarns into a mixed solution of aniline, ammonium persulfate, perchloric acid, deionized water and ethanol, subjecting the mixture to reaction for 12-48 hours at a temperature of -20 to 5 DEG C to realize the in-situ growth of polyaniline on the surfaces of M / CNT yarns or M-CNT yarns, and finally obtaining composite yarns M / CNT / PANI or M-CNT-PANI; 3, soaking two M / CNT / PANI or M-CNT-PANI yarns in a polyving akohol-phosphoric acid sol, forming a film layer on the surfaces of the yarns, and intertwining the two composite yarns together to obtain a super capacitor. According to the technical scheme of the invention, the capacitance of the super capacitor prepared by the above method is enabled to be larger than 100 F / g. Meanwhile, the super capacitor is short in charging / discharging duration, high in energy density and simple in process, thus being applicable to textile wearable power supplies.

Description

technical field [0001] The invention relates to the technical field of capacitor preparation, in particular to a method for preparing a carbon nanotube yarn supercapacitor. Background technique [0002] Supercapacitor is a green and environmentally friendly power source that stores energy through polarized electrolytes. It is a key support field and research content for the development of new energy and new materials in the national "Twelfth Five-Year Plan" and the "Twelfth Five-Year Plan" of Hubei Province. The research, development and successful promotion of the use of supercapacitors in our province can reduce oil consumption, reduce dependence on oil imports, and effectively solve the problems of urban exhaust pollution and lead-acid battery pollution. Petroleum resources are becoming increasingly scarce and the exhaust emissions of internal combustion engines that burn oil are increasingly polluting the environment. Research on new energy devices that replace internal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84
CPCY02E60/13
Inventor 张道洪吴云龙苗孟河王秋凡李婷张俊珩程娟张爱清
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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