Preparation method for super capacitor obtained by carbon nanotube yarn compositing cobaltates metallic oxide nanowire

A technology of supercapacitors and carbon nanotubes, which is applied in the manufacture of hybrid/electric double layer capacitors and current collectors of hybrid capacitors, which can solve the problems of miniaturization, flexibility and large size of integrated devices, and achieve excellent spinnability. , high electrochemical performance, small diameter effect

Active Publication Date: 2016-01-13
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, a variety of flexible devices have been well developed, but these are basically planar structures with ...

Method used

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  • Preparation method for super capacitor obtained by carbon nanotube yarn compositing cobaltates metallic oxide nanowire
  • Preparation method for super capacitor obtained by carbon nanotube yarn compositing cobaltates metallic oxide nanowire

Examples

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Embodiment 1

[0031] A carbon nanotube yarn composite cobaltate metal oxide nanowire supercapacitor, the preparation method of which is as follows:

[0032] 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 (referred to as Pt / CNT-1520); 1 mmol nickel chloride, 2 mmol cobalt chloride, 3 mmol urea, 6 mmol After mixing potassium fluoride and 30ml deionized water evenly, put a piece of Pt / CNT-1520 with a length of about 15 cm into the above mixed solution, and react in an autoclave at 90°C for 12 hours to form a surface containing nickel cobalt oxide nanoparticles. Then the composite yarn was taken out and washed three times with deionized water and ethanol respectively, and calcined in a muffle furnace at 350°C for 1.5 hours to obtain nickel cobaltate nanowires (diameter About 100nm) (marked as Pt / CNT / NiCo 2 o 4 -1520A); put two Pt / CNT / NiCo 2 o 4 -1520A yarn is immersed in polyvinyl alcohol-potas...

Embodiment 2

[0035] A carbon nanotube yarn composite cobaltate metal oxide nanowire supercapacitor, the preparation method of which is as follows:

[0036]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); 1mmol zinc chloride, 2mmol cobalt chloride, 6mmol urea, 6mmol After mixing potassium fluoride and 40ml of deionized water evenly, put an Au / CNT-1215 yarn with a length of about 15 cm into the above mixed solution, and react in an autoclave at 100°C for 10 hours to form a surface containing cobalt acid Composite yarns of zinc nanowire precursors, then take out the composite yarns and wash them with deionized water and ethanol three times respectively, and calcinate them in a muffle furnace at 320°C for 1.5 hours to obtain zinc cobaltate nanowires on the surface of Au / CNT-1215 (about 90nm in diameter) (recorded as Au / CNT / ZnCo 2 o 4 -1215A); two Au / CNT / ZnCo 2 o 4 -1215...

Embodiment 3

[0039] A carbon nanotube yarn composite cobaltate metal oxide nanowire supercapacitor, the preparation method of which is as follows:

[0040] 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); 1mmol copper chloride, 2mmol cobalt chloride, 9mmol urea, 6mmol After mixing potassium fluoride and 30ml of deionized water evenly, put a Ag / CNT-5020 yarn with a length of about 15 cm into the above mixed solution, and react in an autoclave at 110°C for 8 hours to form a surface containing cobalt acid Composite yarns of copper nanowire precursors, then take out the composite yarns and wash them with deionized water and ethanol three times respectively, and calcinate them in a muffle furnace at 300°C for 2 hours to obtain copper cobaltate nanowires on the surface of Ag / CNT-5020 (about 80nm in diameter) (denoted as Ag / CNT / CuCo 2 o 4 -5020A); two Ag / CNT / CuCo 2 o 4 -...

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Abstract

The invention belongs to the capacitor preparation technology field and discloses a preparation method for super capacitor obtained by carbon nanotube yarn compositing cobaltates metallic oxide nanowire. The carbon nanotube yarn composite cobaltates metallic oxide nanowire super capacitor is a one-dimension linear structure, comprising a metal filament, carbon nanotube yarn and cobaltates metallic oxide. The preparation method comprises steps of interwining the metal filament and the carbon nanotube yarn to form an M/CNT dual-strand yarn or a covering yarn structure M-CNT yarn, in which the metal filament is a core and the surface of the core is wrapped by the carbon nanotube yarn, hydrothermally growing cobaltates metallic oxide on the surface of the M/CNT or M-CNT to obtain a composite yarn M/CNT/ACo2O4 or M-CNT-ACo2O4, 3 immersing the M/CNT/ACo2O4 or the M-CNT-ACo2O4 into a polyving akohol-potassium hydroxide collosol to form a film on the surface and then interwining the two composite yarns to obtain a super capacitor. The obtained one-dimension linear super capacitor is high in capacitance, simple in technology and is applicable to weaving a wearable power supply.

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 composite cobaltate metal oxide nanowire supercapacitor. Background technique [0002] The rapid development of portable and miniaturized electronic devices poses new challenges to the design and manufacture of corresponding energy conversion and storage devices. As a novel electrochemical storage device, supercapacitor has high power density, fast charging and discharging and reliability, so it can well realize the application of the device in the field of flexible and wearable portable electronics . As the core component of portable electronic products, whether high-performance flexible energy storage devices can be developed has become one of the keys to the wide application of flexible electronic products. In August 2013, flexible technology has been selected by foreign media as one of the top ten technological adv...

Claims

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Application Information

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IPC IPC(8): H01G11/68H01G11/70H01G11/84
CPCY02E60/13
Inventor 王秋凡张道洪吴云龙李婷苗孟河张俊珩程娟张爱清
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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