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Graphene-based carbon fiber high in strength and hydrogen storage capacity, and preparation method thereof

An alkenyl carbon fiber, high-strength technology, used in fiber chemical characteristics, rayon manufacturing, textiles and papermaking, etc., can solve the problems of harsh hydrogen storage conditions, low hydrogen storage capacity at room temperature, and poor experimental controllability.

Active Publication Date: 2019-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Even so, the existing materials still have many problems such as low hydrogen storage capacity at room temperature, poor experimental controllability, and harsh hydrogen storage conditions.

Method used

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  • Graphene-based carbon fiber high in strength and hydrogen storage capacity, and preparation method thereof
  • Graphene-based carbon fiber high in strength and hydrogen storage capacity, and preparation method thereof
  • Graphene-based carbon fiber high in strength and hydrogen storage capacity, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Mix 0.5wt% graphene oxide aqueous solution with 5wt% phenolic resin ethanol solution to obtain a spinning solution, and control the ratio of the solid content of the graphene oxide aqueous solution to the solid content of the phenolic resin ethanol solution to be 70:30. Adopt syringe pump to inject spinning solution into coagulation bath, coagulation bath is selected as methanol / ethyl acetate (v / v)=1:1, solute is selected as nickel chloride, coagulation bath concentration is 2wt%, and spinning parameter is controlled as : The spinneret diameter is 80 μm, and the injection speed is 0.05 mL / min. After solidification for 1 min, the graphene oxide-based initial fibers were obtained by drying. The polymer content in the obtained graphene-based initial fiber is 30wt%.

[0056] Put the graphene oxide-based initial fiber into the constant temperature section of the tubular carbonization furnace, and place a mixture of epoxy resin and melamine resin with a weight ratio of 1:2 o...

Embodiment 2

[0058] Mix 1.5wt% graphene oxide aqueous solution with 15wt% phenolic resin ethanol solution to obtain spinning solution, and control the ratio of the solid content of the graphene oxide aqueous solution to the solid content of the phenolic resin ethanol solution to be 75:25. A syringe pump is used to inject the spinning solution into the coagulation bath, the coagulation bath is selected as methanol / ethyl acetate (v / v)=1:1, the solute is nickel chloride, and the concentration of the coagulation bath is 2wt%. The spinning parameters are controlled as follows: the diameter of the spinneret is 80 μm, and the injection speed is 0.05 mL / min. After solidification for 1 min, the graphene oxide-based initial fibers were obtained by drying. The polymer content in the obtained graphene-based initial fiber is 25wt%.

[0059]The graphene oxide-based initial fiber was placed in the constant temperature section of the tubular carbonization furnace, and a mixture of epoxy resin and melamin...

Embodiment 3

[0061] Mix 2wt% graphene oxide aqueous solution with 20wt% phenolic resin ethanol solution to obtain spinning solution, and control the ratio of the solid content of graphene oxide aqueous solution to the solid content of phenolic resin ethanol solution to be 80:20. A syringe pump is used to inject the spinning solution into the coagulation bath, the coagulation bath is selected as methanol / ethyl acetate (v / v)=1:1, the solute is selected as nickel chloride, and the concentration of the coagulation bath is 2wt%. The spinning parameters are controlled as follows: the diameter of the spinneret is 80 μm, and the injection speed is 0.05 mL / min. After solidification for 1 min, the graphene oxide-based initial fibers were obtained by drying. The polymer content in the obtained graphene-based initial fiber is 20wt%.

[0062] The graphene oxide-based initial fiber was placed in the constant temperature section of the tubular carbonization furnace, and a mixture of epoxy resin and mela...

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Abstract

The invention belongs to the field of carbon material, and relates to a graphene-based carbon fiber high in strength and hydrogen storage capacity, and a preparation method thereof. The fiber main body of the graphene-based carbon fiber high in strength and hydrogen storage capacity is composed of graphene and amorphous carbon, wherein the weight amount of graphene accounts for 60 to 100% of the weight amount of the fiber main body; the fiber main body may also be loaded with carbon nanotube, the fiber main body, or the fiber main body and the carbon nanotube grows on the fiber main body are modified with metal particles; when the total weight amount of the graphene-based carbon fiber is taken as 100wt%, the content of the metal particles ranges from 0 to 30wt%, and the content of carbon nanotube ranges from 0 to 300wt%. The graphene-based carbon fiber is prepared through following steps: oxidized graphene based initial fiber is prepared through spinning of a spinning solution preparedthrough mixing of an oxidized graphene aqueous solution and a polymer solution based on solution spinning method, and the initial fiber is subjected to carbonization so as to obtain a finished product. The preparation method is simple; the performance is excellent; and the graphene-based carbon fiber can be taken as a hydrogen storage material, and can be used in the fields such as new energy automobile.

Description

technical field [0001] The invention relates to the field of carbon materials, and furthermore, the invention relates to a graphene-based carbon fiber with high strength and high hydrogen storage capacity and a preparation method thereof. Background technique [0002] With the development of the world economy and the continuous increase of the population, the human demand for energy is becoming more and more significant. The large-scale use of fossil energy such as oil, coal, and natural gas has led to increasingly significant energy crises and environmental pollution. The development and utilization of renewable new energy such as solar energy, wind energy, and biomass has gradually become the focus of research. Among them, hydrogen energy, as an efficient, clean, and sustainable green energy, has attracted worldwide attention, and the key to restricting its industrialization is the development of hydrogen storage technology. The current research focus on hydrogen storage ...

Claims

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Application Information

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IPC IPC(8): D01F9/12D01F1/10D01F11/10
CPCD01F1/10D01F9/12D01F11/10
Inventor 乔金樑李墨宸张晓红王湘戚桂村宋志海蔡传伦赖金梅李秉海蒋海斌张江茹茹越高建明张红彬韩朋刘文璐
Owner CHINA PETROLEUM & CHEM CORP
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