Stretchable array structure microelectrode, micro supercapacitor and preparation methods thereof

A micro-electrode and array structure technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., can solve problems such as weak stretchability, complicated preparation methods, and expensive equipment

Inactive Publication Date: 2019-05-21
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of weak stretchability of micro supercapacitors in the prior art, expensive equipment, complicated preparation methods, and diffi

Method used

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  • Stretchable array structure microelectrode, micro supercapacitor and preparation methods thereof
  • Stretchable array structure microelectrode, micro supercapacitor and preparation methods thereof

Examples

Experimental program
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Embodiment 1

[0029] This embodiment provides a method for preparing a microelectrode with a stretchable array structure, comprising the following steps:

[0030]Step a, adding multi-walled carbon nanotubes to a mixed acid solution with a volume ratio of concentrated sulfuric acid and concentrated nitric acid of 3:1, ultrasonically treating at 50°C for 2h, suction filtering, washing with distilled water until neutral, suction filtering, and drying at 80°C °C, dry to constant weight, and grind into uniform fine powder to obtain acidified multi-walled carbon nanotubes; stir the acidified multi-walled carbon nanotubes and sodium dodecylbenzenesulfonate in water evenly, ultrasonically disperse for 1 h, Obtain acidified carbon nanotube stable dispersion liquid; Add ethyl cellulose, hydroxylamine hydrochloride and NMP aqueous solution, stir 15min with precision speed-regulating mixer, obtain conductive ink; Wherein the concentration of each component is: multi-walled carbon nanotube 1.5g / L, sodi...

Embodiment 2

[0036] This embodiment provides a method for preparing a microelectrode with a stretchable array structure, comprising the following steps:

[0037] Step a, adding multi-walled carbon nanotubes to the mixed acid solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, ultrasonic treatment at 60°C for 3h, suction filtration, washing with distilled water until neutral, suction filtration, and at 90°C °C, dry to constant weight, and grind into uniform fine powder to obtain acidified multi-walled carbon nanotubes; stir the acidified multi-walled carbon nanotubes and sodium dodecylbenzenesulfonate in water evenly, and ultrasonically disperse for 1.5h , to obtain a stable dispersion of acidified carbon nanotubes; add ethyl cellulose, hydroxylamine hydrochloride and NMP aqueous solution, and stir with a precision speed mixer for 15 minutes to obtain a conductive ink; wherein the concentration of each component is: multi-walled carbon nanotubes 2g...

Embodiment 3

[0043] This embodiment provides a method for preparing a microelectrode with a stretchable array structure, comprising the following steps:

[0044] Step a, adding multi-walled carbon nanotubes to the mixed acid solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, ultrasonic treatment at 70°C for 4h, suction filtration, washing with distilled water to neutrality, suction filtration, at 100 ℃, dried to constant weight, and ground into a uniform fine powder to obtain the acidified multi-walled carbon nanotubes; the acidified multi-walled carbon nanotubes and sodium dodecylbenzenesulfonate were stirred evenly in water, ultrasonically dispersed for 2 hours, Obtain a stable dispersion of acidified carbon nanotubes; add ethyl cellulose, hydroxylamine hydrochloride and NMP aqueous solution, stir with a precision speed mixer for 15 minutes, and obtain a conductive ink; wherein the concentration of each component is: multi-walled carbon nanotub...

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Abstract

The invention relates to the technical field of intersection between textile materials and electrochemical energy storage processes, in particular to a stretchable array structure microelectrode, a micro supercapacitor and a preparation method thereof. The electrode comprises a stretchable textile fabric substrate, conductive ink, porous carbon fiber and metal oxide, wherein the conductive ink isprinted on the textile fabric substrate; the porous carbon fiber is fixed on the textile fabric substrate through the conductive ink; and the metal oxides are electro-deposited on the porous carbon fiber. The preparation method of the electrode comprises the steps of: printing the conductive ink on the textile fabric substrate; statically implanting the porous carbon fiber; and electro-depositingthe metal oxide. Through the preparation methods, the ink and the static carbon fiber implanting process are combined to prepare the stretchable array structure microelectrode, and the microelectrodeis assembled into the micro supercapacitor through water gel electrolyte; and the two preparation methods are simple in process, relatively low in cost and easy to realize large-scale production.

Description

technical field [0001] The invention relates to the technical field of intersecting textile materials and electrochemical energy storage technology, in particular to a stretchable array structure micro-electrode, a micro-supercapacitor and a preparation method thereof. Background technique [0002] With the rapid development of miniaturization, light weight, flexibility and stretchable electronics (such as electronic skin, flexible display, embeddable micro medical equipment and wearable multimedia devices), the corresponding energy supply unit also needs to be Corresponding changes are made to deal with the new requirements raised in the development of flexible / stretchable electronics. Compared with the currently developing supercapacitors, micro supercapacitors also have the characteristics of high power density, short charging time, high cycle performance, etc., and they have the advantages of small size, variable structure, high safety, and high comfort experience. It i...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/26H01G11/30H01G11/40H01G11/46H01G11/36H01G11/86H01G11/56H01G11/84
CPCY02E60/13
Inventor 李晓燕姚继明张维阎若思
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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