Mg/Ni/In hydrogen storage material and preparation method thereof

A hydrogen storage material, mg2-xniinx technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problems of inconvenient transportation, long preparation period, limited commercial application, etc., to prolong the pulverization time and improve the cycle. The effect of stability

Active Publication Date: 2022-03-11
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the application of the above methods has played a certain role in improving performance, the cycle stability and anti-powdering ability of the hydrogen storage materials currently studied need

Method used

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  • Mg/Ni/In hydrogen storage material and preparation method thereof
  • Mg/Ni/In hydrogen storage material and preparation method thereof
  • Mg/Ni/In hydrogen storage material and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0043] Example 1

[0044] The embodiment of the present invention provides a hydrogen storage material, and the chemical formula of the hydrogen storage material is mg. 1.95 Niin 0.05 .

[0045] The preparation method of the above hydrogen storage material includes the following steps:

[0046] Step 1, the Mg ingot is weighed according to the above raw material ratio, analyzed pure Ni powder and analyzed pure in powder;

[0047] Step Second, the Ni powder and IN powder were mixed with a mixed powder, and then anhydrous ethanol was added, and the ultrasound was dispersed under power 180 W for 12 min, then the temperature was dried under 50 ° C for 2 h, and the powder was pretreated. The mass ratio of anhydrous ethanol and the mixed powder is 20: 1;

[0048] Step three, the pre-treatment powder is uniformly covered on the MG ingot, pressed for 30 min, and the magnesium-based material is pressed under conditions of 25 MPa;

[0049] Step 4, under argon gas conditions, the magnesium-bas...

Example Embodiment

[0050] Example 2

[0051] The embodiment of the present invention provides a hydrogen storage material, and the chemical formula of the hydrogen storage material is mg. 1.9 Niin 0.1 .

[0052] The preparation method of the above hydrogen storage material includes the following steps:

[0053] Step 1, the Mg ingot is weighed according to the above raw material ratio, analyzed pure Ni powder and analyzed pure in powder;

[0054] Step 2, mixing the Ni powder and IN powder, then mixed with anhydrous ethanol, and dispersed for 10 min under power 200 W, then dried at 45 ° C for 2.5 h, pretreatment powder, where the The mass ratio of anhydrous ethanol and the mixed powder is 18: 1;

[0055] Step three, the pre-treatment powder is uniformly covered on the MG ingot, pressed 35 min under conditions of 23 MPa, and magnesium-based materials;

[0056] Step 4 and under argon gas conditions, the magnesium-based material was placed in the tubular heat accumulation furnace and heated at 860 ° C fo...

Example Embodiment

[0057] Example 3

[0058] The embodiment of the present invention provides a hydrogen storage material, and the chemical formula of the hydrogen storage material is mg. 1.85 Niin 0.15 .

[0059] The preparation method of the above hydrogen storage material includes the following steps:

[0060] Step 1, the Mg ingot is weighed according to the above raw material ratio, analyzed pure Ni powder and analyzed pure in powder;

[0061] Step 2, the Ni powder and IN powder were mixed with the powder, then anhydrous ethanol was added, and the ultrasound was dispersed under the conditions of the power 190 W, and then the temperature was dried at 55 ° C for 1.5 h, and the powder was pretreated. The mass ratio of anhydrous ethanol and the mixed powder is 22: 1;

[0062] Step three, the pretreatment powder is uniformly covered on the MG ingot, pressed 25 min under conditions of 27 MPa, and magnesium-based materials;

[0063] Step 4, under argon gas conditions, the magnesium-based material is pl...

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Abstract

The invention relates to the technical field of hydrogen storage materials, and particularly discloses an Mg/Ni/In hydrogen storage material and a preparation method thereof. The general formula of the hydrogen storage material is Mg2-xNiInx, wherein x is more than 0 and less than or equal to 0.25. The hydrogen storage material is prepared from the blocky Mg ingot, and the Mg2Ni-based hydrogen storage alloy with a layered structure is prepared by adopting a solid-phase diffusion method, so that Mg is replaced by In, and the performance of the Mg2Ni alloy is improved. According to the prepared hydrogen storage material, due to the addition of the element In, the unit cell volume of the main phase Mg2Ni is increased, the lattice gap is increased accordingly, the expansion and contraction degrees of the main phase Mg2Ni are reduced when hydrogen atoms enter and exit lattices during charging and discharging, the pulverization time is prolonged, and the cycle stability of the hydrogen storage material is improved.

Description

technical field [0001] The invention relates to the technical field of hydrogen storage materials, in particular to a Mg / Ni / In hydrogen storage material and a preparation method thereof. Background technique [0002] With the continuous improvement of people's awareness of environmental protection, the sharp reduction of fossil fuels and the pollution caused by their combustion have prompted people to continuously develop new energy sources that can replace fossil fuels. Hydrogen is light in quality, low in price, high in combustion value (about 141.6kJ / mol), and the product is H 2 O non-pollution and other advantages become people's ideal energy. The traditional form of hydrogen storage is compressed storage, which poses safety hazards during transportation and storage, which seriously restricts the widespread use of hydrogen. [0003] Metal magnesium has the advantages of light weight, easy acquisition, and large hydrogen storage capacity (theoretical hydrogen storage ca...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C19/03C22C1/04C01B3/00
CPCC22C30/00C22C19/03C22C19/007C22C1/04C22C1/0433C01B3/0031Y02E60/32
Inventor 王建刚王雪王松张欣
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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