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MXene-base composite fiber super capacitor

A technology of supercapacitors and composite fibers, applied in hybrid capacitor electrodes, hybrid capacitor electrolytes, capacitors, etc., can solve the problems of limiting MXene, weak self-supporting ability of MXene sheets, and no spinning technology development, and achieve good conductivity. Effect

Inactive Publication Date: 2018-02-09
杭州德烯科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the existing MXene synthesis and preparation process, the size distribution of the prepared MXene is wide, and the size of the MXene sheet is less than 1um, and the self-supporting ability of the MXene sheet is weak and there is no very effective spinning technology development. The problem is that no progress has been made in fiber macro-materials with MXene as a constituent unit so far, which greatly limits the use of MXene in the field of flexible wearables due to its high electrical conductivity and high electrochemical activity.

Method used

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  • MXene-base composite fiber super capacitor
  • MXene-base composite fiber super capacitor
  • MXene-base composite fiber super capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: the preparation of MXene / graphene composite fiber

Embodiment 1-1

[0042] (1) Xiang Rufigure 1 The two-dimensional layered Ti shown 3 C 2 A single-layer graphene oxide is added to the dispersion, wherein the quality of the single-layer graphene oxide is 5% of the total mass of the solute;

[0043] (2) Extrude the MXene-graphene oxide mixed solution at an extrusion speed of 100mL / h through a spinning head capillary with a pore diameter of 250 μm, and then enter a coagulation bath of 5wt% calcium chloride water / isopropanol solution to obtain MXene / graphene oxide composite fibers with a diameter of about 25 microns;

[0044] (3) Place the MXene primary fiber obtained in step (2) in hydroiodic acid and acetic acid reducing agent, wash and dry at 90° C. for 12 h to obtain the MXene / reduced graphene oxide composite fiber.

[0045] Through the above steps, MXene fibers are obtained, such as figure 2 Shown; The cross-sectional scanning electron microscope picture of the obtained MXene fiber is shown in image 3 Shown; The specific properties of ...

Embodiment 1-2

[0047] (1) Xiang Ru figure 1 The two-dimensional layered Ti shown 3 C 2 A single-layer graphene oxide is added to the dispersion, wherein the mass of the single-layer graphene oxide is 50% of the total mass of the solute;

[0048] (2) Extrude the MXene-graphene oxide mixed solution at an extrusion speed of 60mL / h through a spinning head capillary with an aperture of 250 μm, and then enter a coagulation bath of 5wt% calcium chloride water / isopropanol solution to obtain MXene / graphene oxide composite fibers with a diameter of about 19 microns;

[0049] (3) The MXene primary fibers were placed in hydroiodic acid and acetic acid reducing agents, washed and dried at 90°C for 12 hours to obtain MXene / reduced graphene oxide composite fibers.

[0050] Through the above steps, MXene fibers are obtained; MXene rich in Ti elements in the obtained MXene fibers is evenly distributed in the MXene fibers, and the distribution diagram of the surface and internal Ti elements is as follows ...

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Abstract

The invention discloses an MXene-base composite fiber super capacitor. First, an MXene-base composite fiber is obtained by wet spinning and reduction. Then, a negative fiber, which is the MXene-basedcomposite fiber, and a positive fiber are immersed in a liquid electrolyte to obtain the super capacitor or the negative fiber and the positive fiber are coated with gel electrolyte and then dried toobtain a flexible MXene-base composite fiber super capacitor. The MXene-base composite fiber super capacitor is easy to manufacture, low in cost, suitable for large-scale industrial production, good in conductivity, high in specific capacitance, good in cycling property and good in toughness, and can be used in fields such as energy storage, flexible materials and the like.

Description

technical field [0001] The invention relates to a supercapacitor, in particular to an MXene-based composite fiber supercapacitor. Background technique [0002] In recent years, with the appearance of products such as Google glasses and Apple watch, smart wearable electronic devices have gradually become a hot spot and widely recognized by the market. With the development of these product functions, power consumption is gradually increasing, and the requirements for wearable energy storage and conversion devices are becoming more and more stringent. How to effectively solve the energy bottleneck problem that restricts the development of smart wearable electronic devices while endowing wearable electronic devices with characteristics such as flexibility, light weight, and integration is the current direction of industry and scientific efforts. Fiber structures made of energy devices are one of the current ideas to solve these problems. Mainly due to the advantages of fiber-l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/40H01G11/32H01G11/56H01G11/86H01G13/00
CPCY02E60/13H01G11/30H01G11/32H01G11/40H01G11/56H01G11/86H01G13/00
Inventor 高超杨秋艳
Owner 杭州德烯科技集团有限公司
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