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Carbon fiber hydrogen storage material, and preparation method thereof

A hydrogen storage material, carbon fiber technology, applied in the direction of fiber chemical characteristics, chemical instruments and methods, hydrogen, etc., can solve the problems of poor flexibility of carbon fiber, limited hydrogen storage capacity, low specific surface area, etc., and achieve good toughness and good regeneration performance , the effect of high average molecular weight

Inactive Publication Date: 2018-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology chooses benzoxazine monomer as the raw material source of carbon fiber materials, which has high environmental risks and hidden dangers, and is likely to cause groundwater pollution.
At the same time, the physical and chemical properties of carbon fibers prepared by combining electrospinning and carbonization processes need to be improved. For example, the specific surface area is generally not high (the BET method specific surface area is less than 2000m 2 / g), the hydrogen storage capacity is limited, especially the carbon fiber produced by this process is poor in flexibility, which is easy to bring difficulties to regeneration and use

Method used

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  • Carbon fiber hydrogen storage material, and preparation method thereof
  • Carbon fiber hydrogen storage material, and preparation method thereof
  • Carbon fiber hydrogen storage material, and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] Take 20 g of rice straw, cut into small pieces of about 8 cm, and soak in 2000 g of 20% sodium hydroxide solution at room temperature for 24 hours. Weigh 10 g of soaked rice straw and place it in a mixed solution of N-methylmorpholine-N-oxide / deionized water / propyl gallate, N-methylmorpholine-N-oxide / deionized water The mass of propyl gallate is 50g, 10g and 1g respectively, and the magnetic water bath is turned on to stir, and the treatment is carried out at 100°C and 200rpm for 10h. The obtained dark yellow solution was poured into a spinning vessel, and purged with nitrogen gas at 20 mL / min to make the solution pass through a 0.1 mm spinneret. Then the spinning solution is extruded through the spinneret at 100°C, enters the deionized water coagulant bath after 50min, and is stretched by the winding shaft, and then the elongated fiber is removed from the coagulant at a speed of 10m / min bath. After winding, the filaments on the spool are soaked in deionized water for...

Embodiment 2

[0036] In Example 1, the carbon fiber hydrogen storage material B was obtained by replacing the rice straw with wooden branches of the same mass, and keeping other reaction conditions and material composition unchanged.

Embodiment 3

[0038] In Example 1, the sodium hydroxide solution was replaced with lithium hydroxide solution of the same amount and concentration, and other reaction conditions and material composition remained unchanged to obtain carbon fiber hydrogen storage material C.

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Abstract

The invention relates to a carbon fiber hydrogen storage material, and a preparation method thereof. The preparation method comprises following steps: a biomass raw material is cut into small segments, and is immersed in an alkali solution; the biomass raw material is added into a mixed solvent for stirring treatment so as to obtain a solution, the solution is taken as a spinning solution for wetspinning treatment, and then drying is carried out, wherein the mixed solvent is a N-methyl morpholine-N-oxide / deionized water / propyl gallate system; obtained dried fiber is introduced into an alkalisolution for activation, and obtained activated fiber is dried; the dried activated fiber is subjected to carbonization processing so as to obtain the carbon fiber hydrogen storage material. The production method is capable of saving energy, is friendly to the environment, and is simple; the obtained carbon fiber hydrogen storage material is narrow in aperture distribution range, excellent in toughness, and excellent in hydrogen storage performance, and fracture is not easily caused.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage materials, and in particular relates to a carbon fiber hydrogen storage material and a preparation method thereof. Background technique [0002] Hydrogen is a clean and efficient energy carrier, and is considered to be an important bridge connecting fossil energy to renewable energy. The large-scale application of hydrogen energy must solve the three related technologies of hydrogen production, storage, transportation and application. Due to the flammability, explosion and easy diffusion of hydrogen, and the low volumetric energy density under normal temperature and pressure conditions (only 1 / 3000), hydrogen storage technology has become a bottleneck restricting the development of hydrogen energy. Therefore, the development of high energy density, high efficiency and safe hydrogen storage and transportation technology is a key technical problem that must be solved. Solid-state hydroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/16D01F11/12D01F11/14D01D5/06C01B3/00
CPCC01B3/0021C01B3/0084D01D5/06D01F9/16D01F11/12D01F11/14Y02E60/32
Inventor 赵亮王刚方向晨
Owner CHINA PETROLEUM & CHEM CORP
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