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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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  • Summary
  • 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 to be enhanced, and most of them are in powder form, and there are still long preparation cycles and inconvenient transportation. and other shortcomings, which greatly limit its commercial application

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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

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Effect test

Embodiment 1

[0044] An embodiment of the present invention provides a hydrogen storage material, the chemical formula of the hydrogen storage material is Mg 1.95 NiIn 0.05 .

[0045] The preparation method of the above-mentioned hydrogen storage material comprises the following steps:

[0046] Step 1, taking Mg ingot, analytically pure Ni powder and analytically pure In powder according to the above-mentioned raw material ratio;

[0047] Step 2: Mix the Ni powder and In powder to obtain a mixed powder, then add absolute ethanol, ultrasonically disperse under the condition of 180w for 12 minutes, and then dry at 50°C for 2 hours at a low temperature to obtain a pretreated powder, wherein the The mass ratio of dehydrated alcohol and described mixed powder is 20:1;

[0048] Step 3, the pretreatment powder is evenly covered on the Mg ingot, and pressed for 30 minutes under a pressure of 25 MPa to obtain a magnesium-based material;

[0049] Step 4, under the condition of argon gas, place the ...

Embodiment 2

[0051] An embodiment of the present invention provides a hydrogen storage material, the chemical formula of the hydrogen storage material is Mg 1.9 NiIn 0.1 .

[0052] The preparation method of the above-mentioned hydrogen storage material comprises the following steps:

[0053] Step 1, taking Mg ingot, analytically pure Ni powder and analytically pure In powder according to the above-mentioned raw material ratio;

[0054] Step 2: Mix the Ni powder and In powder to obtain a mixed powder, then add absolute ethanol, ultrasonically disperse for 10 min at a power of 200w, and then dry at a low temperature of 45°C for 2.5 hours to obtain a pretreated powder, wherein the The mass ratio of said dehydrated alcohol and said mixed powder is 18:1;

[0055] Step 3, the pretreatment powder is evenly covered on the Mg ingot, and pressed for 35 minutes under a pressure of 23 MPa to obtain a magnesium-based material;

[0056] Step 4, under the condition of argon gas, place the magnesium-b...

Embodiment 3

[0058] An embodiment of the present invention provides a hydrogen storage material, the chemical formula of the hydrogen storage material is Mg 1.85 NiIn 0.15 .

[0059] The preparation method of the above-mentioned hydrogen storage material comprises the following steps:

[0060] Step 1, taking Mg ingot, analytically pure Ni powder and analytically pure In powder according to the above-mentioned raw material ratio;

[0061] Step 2: Mix the Ni powder and In powder to obtain a mixed powder, then add absolute ethanol, ultrasonically disperse for 13 minutes at a power of 190w, and then dry at a low temperature of 55°C for 1.5h to obtain a pretreated powder, wherein the The mass ratio of said dehydrated alcohol and said mixed powder is 22:1;

[0062] Step 3, the pretreatment powder is evenly covered on the Mg ingot, and pressed for 25 minutes under a pressure of 27 MPa to obtain a magnesium-based material;

[0063] Step 4, under the condition of argon gas, place the magnesium-...

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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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