Flexible electrode and preparation method thereof

A flexible electrode and flexible technology, which is applied in the preparation of flexible electrodes and the field of flexible electrodes, can solve the problems of low electrochemical performance and small capacitance, and achieve the effects of increasing spacing and specific surface area, increasing unit capacitance, and strong flexibility

Active Publication Date: 2014-10-01
未名电池科技(深圳)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies have shown that the electrochemical performance of flexible electrodes made of graphene is much lower than expected; that is to say, the capacitance of graphene flexible electrodes produced in practice can basically meet the needs of supercapacitors. , however, its actual capacitance is much smaller than the theoretically expected capacitance

Method used

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  • Flexible electrode and preparation method thereof
  • Flexible electrode and preparation method thereof
  • Flexible electrode and preparation method thereof

Examples

Experimental program
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Embodiment

[0028] The aniline that this example adopts is prepared by distillation under reduced pressure; Ammonium persulfate, graphite and carbon nanotubes are all purchased on the market, and wherein graphite is 325 orders, and carbon nanotube diameter 10-30nm, long 5-15 micron, purity >=95% ( weight); other reagents are commercially purchased analytical reagents without further processing.

[0029] The graphene oxide of this example is prepared by the Hummers method using purchased 325-mesh graphite as a raw material. The Hummers method is a relatively common method in the chemical stripping method, which is recorded in an article published by HummersWS: Hummers W S, Offeman R E. Preparation of graphitic oxide [J]. J Am Chem Soc, 1958, 80 (6) :1339. I won't repeat it here.

[0030] The flexible electrode preparation method in this example includes:

[0031] a. The preparation of carbon nanotube and graphene oxide mixed dispersion liquid, at first, disperse 50mg graphene oxide in d...

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Abstract

The invention discloses a preparation method of a flexible electrode and the flexible electrode obtained through the preparation method. The preparation method comprises the steps of a, manufacturing a carbon nano tube and an grapheme oxide into a homodisperse mixed dispersion agent; b, removing a solvent in the mixed dispersion agent, and obtaining a thin film with a three-dimensional conductive network; c, conducting in-situ polymerization on the three-dimensional conductive network with organic polymer conductive materials to obtain a three-element flexible composite film; d, conducting reduction on the grapheme oxide in the three-element flexible composite film to obtain the flexible electrode. According to the preparation method, firstly, the thin film with the three-dimensional conductive network is formed by the carbon nano tube and the grapheme oxide, and then, the in-situ polymerization is carried out on the three-dimensional network with the organic polymer conductive materials; in the three-dimensional conductive network, the carbon nano tube is inserted into the portion between grapheme sheet layers, so that the interval between the grapheme sheets and the specific surface area of the grapheme sheets are increased, the carbon nano tube also overcomes the defect generated in the oxidation process of grapheme, electronic transmission is facilitated, and the specific capacitance of the flexible electrode is improved.

Description

technical field [0001] The present application relates to the field of electrode materials, in particular to a method for preparing a flexible electrode and the prepared flexible electrode. Background technique [0002] With the growing concern about limited fossil fuels and environmental issues, it is imperative and important to seek an alternative energy conversion / storage resource. Supercapacitors, also known as electrochemical capacitors, play an extremely important role in energy storage. Supercapacitors have the characteristics of high power density, long service life, etc., and have many potential applications in portable electronic devices, suitable for use in hybrid electric vehicles and implanted medical devices, etc. In recent years, more and more studies have focused on the application of supercapacitors as energy storage devices in different modern installations. An ideal flexible supercapacitor should have both good flexibility and excellent mechanical streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/36
CPCY02E60/13
Inventor 范浩森潘锋
Owner 未名电池科技(深圳)有限公司
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