Magnesium-based hydrogen storage material based on co-doping of molecular sieve and metallic nickel and preparation method of magnesium-based hydrogen storage material

A hydrogen storage material, molecular sieve technology, applied in the directions of alkali metal/alkaline earth metal/beryllium/magnesium hydride, non-metallic elements, chemical instruments and methods, etc., can solve the problem of limited application range, high hydrogen desorption temperature, slow hydrogen absorption and desorption With problems such as kinetic properties, it can achieve the effect of low cost of raw materials, simple preparation method and lower apparent activation energy.

Pending Publication Date: 2022-07-15
SHANDONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

However, the stable thermodynamic properties of magnesium hydride, high hydrogen desorpti...

Method used

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  • Magnesium-based hydrogen storage material based on co-doping of molecular sieve and metallic nickel and preparation method of magnesium-based hydrogen storage material
  • Magnesium-based hydrogen storage material based on co-doping of molecular sieve and metallic nickel and preparation method of magnesium-based hydrogen storage material
  • Magnesium-based hydrogen storage material based on co-doping of molecular sieve and metallic nickel and preparation method of magnesium-based hydrogen storage material

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Experimental program
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Embodiment 1

[0022] Preparation of magnesium hydride hydrogen storage materials co-doped with SBA-15 molecular sieve and metal nickel:

[0023] Weigh magnesium hydride, SBA-15 molecular sieve and metal nickel powder respectively in the glove box. Orientation, ball milled for 4 hours, and after cooling, samples were stored in the glove box.

[0024] In order to prove whether the material reacted, the X-ray diffraction test of the prepared material was carried out, and the results were as follows figure 1 As shown, the ball milling process is only a physical process, and no chemical reaction occurs.

[0025] In order to prove that the thermodynamic stability of the material was reduced, the samples were subjected to DSC analysis at a heating rate of 5 °C / min, 10 °C / min, 15 °C / min and 20 °C / min, respectively. The results are as follows: figure 2 shown.

[0026] In order to test the hydrogen storage performance of the material, PCT analysis was performed on the sample, and the results were...

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Abstract

The invention discloses a magnesium-based hydrogen storage material based on co-doping of a molecular sieve and metallic nickel and a preparation method of the magnesium-based hydrogen storage material, the magnesium-based hydrogen storage material is formed by compounding magnesium hydride, nickel powder and an Fe-SBA-15 type molecular sieve, and the magnesium-based hydrogen storage material is prepared by a high-energy planetary ball milling method. The hydrogen storage material prepared by the invention effectively reduces the apparent activation energy of decomposition and dehydrogenation of magnesium hydride, is expected to be applied to a hydrogen supply source of a portable power supply device or a fuel cell and the like, is simple in preparation method and low in raw material cost, and can be used for large-scale development and application.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage materials in new energy materials, and relates to a magnesium-based hydrogen storage material co-doped with molecular sieve and metal nickel and a preparation method thereof. Background technique [0002] With the influence of factors such as global warming and the gradual consumption of fossil energy, sustainable clean energy has attracted more and more attention from countries around the world. Hydrogen energy is a clean secondary energy carrier that can realize sustainable energy utilization. It has the advantages of high energy density per unit mass and a wide range of sources. Therefore, hydrogen energy will definitely become an important alternative energy in the future society. To realize the wide application of hydrogen energy, there are still three major problems, namely preparation, storage and application. Among them, the storage problem of hydrogen energy is the key to limitin...

Claims

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Application Information

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IPC IPC(8): C01B3/00C01B6/04
CPCC01B3/0078C01B6/04C01P2002/72C01P2002/88C01P2002/80
Inventor 于昊付源益高猛付民韩宗盈薛建良王坤华管美丽宁良民杨燕茹
Owner SHANDONG UNIV OF SCI & TECH
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