Magnesium-based hydrogen storage alloy material and preparation method thereof

A magnesium-based hydrogen storage alloy and alloy technology, applied in electrical components, circuits, battery electrodes, etc., can solve the problems of unsatisfactory hydrogen desorption temperature and cycle life of the alloy, and limit the pace of application of magnesium-based hydrogen storage alloys

Active Publication Date: 2019-06-04
杨桂玲 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrogen desorption temperature and cycle life of alloys are still not ideal so far, which limits the pace of application of magnesium-based hydrogen storage alloys.

Method used

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  • Magnesium-based hydrogen storage alloy material and preparation method thereof
  • Magnesium-based hydrogen storage alloy material and preparation method thereof
  • Magnesium-based hydrogen storage alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Mg 1.7 Zr 0.3 Ni-(1.1Ni+0.4Ti+5%Mg)

[0034] Mg (200 mesh), Ni (200 mesh), Zr (200 mesh) metal powder by Mg 1.7 Zr 0.3 The stoichiometric ratio of Ni was uniformly mixed, the total mass was 8g, and it was loaded into a stainless steel vacuum spherical tank with a volume of 300mL, and the weight ratio of the ball to material was 1:20, and stainless steel balls were placed. Before ball milling, the ball mill tank should be evacuated and filled with 1.0×10 5 Pa argon to prevent the alloy metal powder from being oxidized. The rotational speed of the ball mill was 450 rpm. The ball milling time was 120 hours. The working system adopts intermittent rotation to prevent the recrystallization of the amorphous alloy due to excessive temperature rise.

[0035] Ni (200 mesh), Ti (200 mesh) metal powder and Mg powder (200 mesh) with a purity of 99.9% were uniformly mixed according to the stoichiometric ratio of 1.1Ni+0.4Ti+5%Mg, and the total mass was 2g. Mg 1.7 Z...

Embodiment 2

[0036] Example 2 Mg 1.6 Zr 0.4 Ni-(1.5Ni+0.5Ti+30%Mg)

[0037] Mg (200 mesh), Ni (200 mesh), Zr (300 mesh) metal powder by Mg 1.6 Zr 0.4 The stoichiometric ratio of Ni was uniformly mixed, the total mass was 8g, and it was put into a stainless steel vacuum spherical tank with a volume of 300mL, and the weight ratio of the ball to material was 1:40, and stainless steel balls were put into it. Before ball milling, the ball mill tank should be evacuated and filled with 1.0×10 5 Pa argon to prevent the alloy metal powder from being oxidized. The rotational speed of the ball mill was 450 rpm. The ball milling time was 60 hours. The working system adopts intermittent rotation to prevent the recrystallization of the amorphous alloy due to excessive temperature rise.

[0038] Mix Ni (200 mesh), Ti (300 mesh) metal powder and Mg powder (200 mesh) with a purity of 99.9% according to the stoichiometric ratio of 1.5Ni+0.5Ti+30%Mg, the total mass is 2g. Mg 1.6 Zr 0.4 Ni and (1.5N...

Embodiment 3

[0039] Example 3 Mg 2 Zr 0.4 Ni-(1.2Ni+0.1Ti+5%Mg)

[0040] Mg (100 mesh), Ni (200 mesh), Zr (200 mesh) metal powder by Mg 2 Zr 0.4 The stoichiometric ratio of Ni was uniformly mixed, the total mass was 8g, and it was put into a stainless steel vacuum spherical tank with a volume of 300mL, and the weight ratio of the ball to material was 1:20, and stainless steel balls were put into it. Before ball milling, the ball mill tank should be evacuated and filled with 1.0×10 5 Pa argon to prevent the alloy metal powder from being oxidized. The rotating speed of the ball mill was 350 rpm. The ball milling time was 150 hours. The working system adopts intermittent rotation to prevent the recrystallization of the amorphous alloy due to excessive temperature rise.

[0041] Ni (300 mesh), Ti (200 mesh) metal powder and Mg powder (200 mesh) with a purity of 99.5% were uniformly mixed according to the stoichiometric ratio of 1.2Ni+0.1Ti+5%Mg, and the total mass was 2g. Mg 2 Zr 0.4...

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Abstract

The invention discloses a magnesium-based hydrogen storage alloy material and a preparation method thereof. The proper proportion and synthesis condition of alloy are improved through two kinds of element optimization and combination, so that the magnesium-based hydrogen storage alloy material which is high in discharge specific energy, long in cycle life and good in large-rate discharge performance is prepared, and meanwhile, the alloy has high safety. The material is good in overcharge and over-discharge performance, and can be widely applied to communication and information fields requiringlarge-capacity mobile power supplies, an energy storage system of a fuel cell, a heat pump, an air conditioner, a submarine, an electric vehicle and the like.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to a large-capacity and high-stability magnesium-based hydrogen storage alloy material and a preparation method thereof. Background technique [0002] Energy, information and materials are the three cornerstones of modern civilized society. Energy storage materials, which involve the two major fields of energy and materials, are the material basis for sustainable development of human beings. If energy cannot be stored, it is impossible to realize its application value. Facing the increasingly serious energy shortage and the deterioration of the climate environment, the effective development and utilization of solar energy, wind energy, ocean energy, primary green energy, and hydrogen energy, an inexhaustible secondary energy, cannot avoid storage issues. Therefore, energy storage materials are the key to the application of green energy. [0003] Among many green energy so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00C22C1/04H01M4/46
CPCY02E60/10
Inventor 孙化鹏柏天新高晓娜郭洋洋邢龙江盖江峰闫栋王英杰刘大志杨桂玲
Owner 杨桂玲
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