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A preparation method of carbon nanotube yarn composite cobaltate metal oxide nanowire supercapacitor

A supercapacitor, carbon nanotube technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor current collectors, etc., can solve the problems of large size, incompatible with the miniaturization and flexibility of integrated devices, and achieve high electrochemical performance , Excellent spinnability, high capacitance effect

Active Publication Date: 2018-01-23
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, a variety of flexible devices have been well developed, but these are basically planar structures with large volumes, which do not conform to the development path of miniaturization and flexibility of integrated devices.

Method used

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  • A preparation method of carbon nanotube yarn composite cobaltate metal oxide nanowire supercapacitor
  • A preparation method of carbon nanotube yarn composite cobaltate metal oxide nanowire supercapacitor

Examples

Experimental program
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Effect test

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 technical field of capacitor preparation, and discloses a method for preparing a carbon nanotube yarn composite cobaltate metal oxide supercapacitor, which is a one-dimensional linear structure, containing metal wire, carbon nanotube yarn and cobalt acid Salt metal oxide, the preparation process is as follows: 1. Metal wire and carbon nanotube yarn are intertwined to form M-CNT double-ply yarn or a core-spun yarn structure M‑CNT with metal wire as the core surface coated with carbon nanotube yarn Yarn; 2, the composite yarn M / CNT / ACo2O4 or M-CNT-ACo2O4 obtained by hydrothermally growing cobaltate metal oxide on the surface of M / CNT or M-CNT; 3, the M / CNT / ACo2O4 or M-CNT CNT‑ACo2O4 is immersed in polyvinyl alcohol‑potassium hydroxide sol to form a film on the surface, and then two composite yarns are wound to form a supercapacitor. The obtained one-dimensional linear supercapacitor has high capacitance and simple process, and is expected to be applied to textile 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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Patent Type & Authority Patents(China)
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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