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MXene fiber and preparation method thereof

A fiber and graphene technology, applied in the field of MXene fiber and its preparation, can solve the problems of no spinning technology development, weak self-supporting ability of MXene sheet, etc., and achieve the effect of good mechanical properties and good electrical conductivity.

Inactive Publication Date: 2018-04-20
杭州德烯科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 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. However, no progress has been made so far in fiber macroscopic materials with MXene as the constituent unit, 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 fiber and preparation method thereof
  • MXene fiber and preparation method thereof
  • MXene fiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Xiangru figure 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;

[0025] (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;

[0026] (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.

[0027] 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 2

[0029] (1) Xiangru 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;

[0030] (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;

[0031] (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.

[0032] 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 ...

Embodiment 3

[0034] (1) to two-dimensional layered Ti 3 C 2 A single-layer graphene oxide is added to the dispersion, wherein the mass of the single-layer graphene oxide is 90% of the total mass of the solute;

[0035] (2) Extrude the MXene-graphene oxide mixture at an extrusion speed of 100mL / h through a spinning head capillary with a pore diameter of 250 μm, and then enter the coagulation bath of 5wt% calcium chloride water / isopropanol solution, Obtain a diameter of about 16 microns MXene-graphene oxide composite fiber;

[0036] (3) The MXene primary fibers were placed in hydroiodic acid and acetic acid reducing agents, washed and dried at 90 °C for 12 h to obtain MXene-reduced graphene oxide composite fibers.

[0037] Through the above steps, the MXene fiber is obtained; the side scanning electron microscope image of the obtained fiber is as follows Figure 5 Shown; The specific properties of the fiber are shown in Table 1.

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Abstract

The invention provides an MXene fiber and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing two-dimensional layered MXene dispersion liquid with single-layer graphene oxide dispersion liquid so as to obtain mixed dispersion liquid; and preparing an MXene-graphene oxide composite fiber by using a wet spinning process, and heating and reducing the MXene-graphene oxide composite fiber in a reducing agent so as to obtain a continuous MXene-reduced graphene oxide composite fiber. The prepared MXene-reduced graphene oxide composite fiber has good electrical conductivity and good toughness, can be braided to form MXene-reduced graphene oxide fiber cloth or be blended with other fibers for braiding of a variety of fabrics, and is applicable to thefields of energy devices like flexible supercapacitors and lithium batteries, composite materials, catalysis materials, electromagnetic shielding materials, wave-absorbing materials, etc.

Description

technical field [0001] The invention relates to a novel functional composite fiber material, in particular to an MXene fiber and a preparation method thereof. Background technique [0002] MXene is a two-dimensional layered transition metal carbide, nitride or carbonitride with a two-dimensional layered graphene-like structure. It is mainly obtained by etching away the intermediate layer (aluminum or silicon) in the layered MAX material, under the action of ultrasound or solvent embedding. Thanks to its graphene-like two-dimensional layered structure and chemical composition, MXene exhibits electrical and electrochemical properties that are different from other two-dimensional materials such as graphene, boron nitride, molybdenum disulfide, and black phosphorus. Capacitors, lithium-ion batteries and other emerging energy industries, civil and military electromagnetic shielding and microwave absorption fields have a wide range of application potential. [0003] However, lim...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01D5/06
CPCD01D5/06D01F9/08
Inventor 高超杨秋艳
Owner 杭州德烯科技集团有限公司
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