Method for preparing magnesium-based nanocomposite hydrogen storage material

A hydrogen storage material and nanocomposite technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve problems such as poor hydrogen absorption and desorption kinetic performance, and achieve good hydrogen absorption and desorption performance, light weight, and excellent activation. performance effect

Inactive Publication Date: 2020-08-11
深圳市亚环环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Technical problem to be solved by the present invention: Aiming at the problem of poor hydrogen absorption and desorption kinetics of existing hydrogen storage materials, a preparation method of magnesium-based nanocomposite hydrogen storage materials is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Mix the molecular sieve and the ferrous sulfate solution with a mass fraction of 2% evenly, take it out after standing for 1 day, and let it dry naturally at room temperature to obtain the pretreated molecular sieve, and place the pretreated molecular sieve in a chemical vapor deposition furnace for deposition treatment. The green body is obtained, the green body is heat-treated, cooled to room temperature, and the substrate is obtained; the filler is obtained by sputtering on the surface of the substrate; the magnesium hydride and the filler are mixed and placed in a ball mill tank, and ball milling is performed periodically The mixed material is obtained; the mixed material is placed in a reaction tube, subjected to hydrogen absorption and desorption treatment, and cooled to room temperature to obtain a magnesium-based nanocomposite hydrogen storage material. The mass ratio between molecular sieve and 2% ferrous sulfate solution is 1:10. The deposition process steps a...

Embodiment 2

[0035] Mix the molecular sieve and the ferrous sulfate solution with a mass fraction of 2% evenly, take it out after standing for 1 day, and let it dry naturally at room temperature to obtain the pretreated molecular sieve, and place the pretreated molecular sieve in a chemical vapor deposition furnace for deposition treatment. The green body is obtained, the green body is heat-treated, cooled to room temperature, and the substrate is obtained; the filler is obtained by sputtering on the surface of the substrate; the magnesium hydride and the filler are mixed and placed in a ball mill tank, and ball milling is performed periodically The mixed material is obtained; the mixed material is placed in a reaction tube, subjected to hydrogen absorption and desorption treatment, and cooled to room temperature to obtain a magnesium-based nanocomposite hydrogen storage material. The mass ratio between molecular sieve and 2% ferrous sulfate solution is 1:10. The deposition process steps a...

Embodiment 3

[0037] Mix the molecular sieve and the ferrous sulfate solution with a mass fraction of 2% evenly, take it out after standing for 2 days, and let it dry naturally at room temperature to obtain the pretreated molecular sieve, and place the pretreated molecular sieve in a chemical vapor deposition furnace for deposition treatment. The green body is obtained, the green body is heat-treated, cooled to room temperature, and the substrate is obtained; the filler is obtained by sputtering on the surface of the substrate; the magnesium hydride and the filler are mixed and placed in a ball mill tank, and ball milling is performed periodically The mixed material is obtained; the mixed material is placed in a reaction tube, subjected to hydrogen absorption and desorption treatment, and cooled to room temperature to obtain a magnesium-based nanocomposite hydrogen storage material. The mass ratio between molecular sieve and 2% ferrous sulfate solution is 1:10. The deposition process steps ...

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PUM

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Abstract

The invention relates to a method for preparing a magnesium-based nanocomposite hydrogen storage material, and belongs to the technical field of hydrogen storage materials. In the method, carbon nanotubes are grown in situ on the surface of a molecular sieve to serve as a substrate, rare earth lanthanum is used as a target, a layer of lanthanum hydride film is formed on the surface of the substrate by sputtering to serve as a filler of the hydrogen storage material, and with magnesium hydride as a raw material, the magnesium-based nanocomposite hydrogen storage material is prepared by mechanical ball milling. When hydrogen molecules make contact with the material, the hydrogen molecules are adsorbed on the alloy surface, H-H bonds of the hydrogen molecules dissociate into atomic hydrogen,hydrogen atoms diffuse inwards from the material surface to be immersed into metal atoms with the radius much larger than that of the hydrogen atoms and among crystal lattices in the gaps of metal toform a solid solution, hydrogen solidly dissolved in the metal continues to diffuse inwards, the diffusion must have activation energy of conversion from chemical adsorption to dissolution, after thesolid solution is saturated by hydrogen, excess hydrogen atoms react with the solid solution to produce metal hydride, and thus the purpose of hydrogen storage is achieved.

Description

technical field [0001] The invention relates to a preparation method of a magnesium-based nanocomposite hydrogen storage material, belonging to the technical field of hydrogen storage materials. Background technique [0002] Among the many new energy sources, hydrogen energy is known as the ultimate clean energy for mankind due to its rich resources, extremely high energy density and mass ratio, environmental friendliness, good combustion performance, various storage forms, and high potential economic benefits. One of the most important new energy sources on the world energy stage. The ideal cycle of hydrogen involves four links of hydrogen production, storage, transportation and application. There are several key issues in the process of hydrogen energy development and application: hydrogen production technology, hydrogen storage and transportation technology and hydrogen application. [0003] The hydrogen energy system includes the whole process from development to utili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B22F9/02B22F1/00C22C23/00C23C16/26C23C16/56C23C14/34C23C14/06C01B3/00B82Y30/00B82Y40/00
CPCB22F9/04B22F9/023C22C23/00C23C16/26C23C16/56C23C14/0057C23C14/06C01B3/001C01B3/0078B82Y30/00B82Y40/00B22F2009/043B22F1/054Y02E60/32
Inventor 陈炎
Owner 深圳市亚环环保科技有限公司
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