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a nano-tif 3 and tio 2 Nanotube synergistically modified magnesium-based amorphous alloy hydrogen storage material and preparation method thereof

An amorphous alloy and hydrogen storage material technology, applied in the field of hydrogen storage materials, can solve the problems of slow hydrogen absorption and desorption kinetics, lack of diffusion channels for hydrogen atoms, and difficulty in dissociation of hydrogen molecules, so as to reduce the kinetics of hydrogen storage. performance, improve the rate of hydrogen absorption and desorption, and improve the effect of hydrogen absorption and desorption kinetics

Active Publication Date: 2022-03-08
广东省国研科技研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Using amorphous alloys directly as hydrogen storage materials has a greater hydrogen storage capacity than crystalline alloys; but in order to ensure that the amorphous structure is not crystallized, the hydrogen absorption temperature must be carried out below its crystallization temperature, which not only It makes it difficult for hydrogen molecules to dissociate into hydrogen atoms on the amorphous surface and be absorbed by it, and hydrogen atoms lack diffusion channels and have slow hydrogen absorption and desorption kinetics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: Nano-TiF 3 and TiO 2 A preparation method of a magnesium-nickel-yttrium amorphous alloy hydrogen storage material synergistically modified by nanotubes, the specific steps are as follows:

[0020] (1) Add magnesium ingots, nickel ingots and yttrium ingots to an induction melting furnace for smelting for 5 minutes, and cool to obtain alloy ingots; based on the mass of magnesium-based amorphous alloy as 100%, magnesium 98%, nickel 1%, rare earth Elemental Yttrium 1%;

[0021] (2) Grinding and removing the oxide film on the surface of the alloy ingot, and then placing it in the medium-frequency induction coil of the induction melting furnace to heat and melt it into an alloy melt. The alloy melt is blown to the surface of the rotating roller by high-pressure argon gas for rapid quenching and thrown out Amorphous magnesium-based alloy filaments; wherein the roller speed is 40m / s;

[0022] (3) Cut the amorphous magnesium-based alloy filaments into amorphous ...

Embodiment 2

[0024] Embodiment 2: Nano-TiF 3 and TiO 2 A method for preparing a magnesium-nickel-lanthanum amorphous alloy hydrogen storage material synergistically modified by nanotubes, the specific steps are as follows:

[0025] (1) Add magnesium ingots, nickel ingots and lanthanum ingots to an induction melting furnace for smelting for 7 minutes, and cool to obtain alloy ingots; based on the mass of magnesium-based amorphous alloy as 100%, magnesium 90%, nickel 5%, rare earth Elemental lanthanum 5%;

[0026] (2) Grinding and removing the oxide film on the surface of the alloy ingot, and then placing it in the medium-frequency induction coil of the induction melting furnace to heat and melt it into an alloy melt. The alloy melt is blown to the surface of the rotating roller by high-pressure argon gas for rapid quenching and thrown out Amorphous magnesium-based alloy thin strip; wherein the roller speed is 30m / s;

[0027] (3) Cut the amorphous magnesium-based alloy thin strips into am...

Embodiment 3

[0029] Embodiment 3: Nano-TiF 3 and TiO 2 A method for preparing a magnesium-nickel-neodymium amorphous alloy hydrogen storage material synergistically modified by nanotubes, the specific steps are as follows:

[0030] (1) Add magnesium ingots, nickel ingots and neodymium ingots to the induction melting furnace for smelting for 8 minutes, and cool to obtain alloy ingots; based on the mass of magnesium-based amorphous alloy as 100%, magnesium 80%, nickel 10%, rare earth Elemental Neodymium 10%;

[0031] (2) Grinding and removing the oxide film on the surface of the alloy ingot, and then placing it in the medium-frequency induction coil of the induction melting furnace to heat and melt it into an alloy melt. The alloy melt is blown to the surface of the rotating roller by high-pressure argon gas for rapid quenching and thrown out Amorphous magnesium-based alloy thin strip; wherein the roller speed is 40m / s;

[0032] (3) Cut the amorphous magnesium-based alloy thin strips into a...

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Abstract

The present invention relates to a kind of nano TiF 3 and TiO 2 A magnesium-based amorphous alloy hydrogen storage material and a preparation method thereof, which are synergistically modified by nanotubes, belong to the technical field of hydrogen storage materials. Nano-TiF of the present invention 3 and TiO 2 Nanotube synergistically modified magnesium-based amorphous alloy hydrogen storage materials: using magnesium-based amorphous alloy as the base material, nano-TiF 3 and TiO 2 The nanotube plays the role of coordinating modification, and the magnesium-based amorphous alloy is Mg‑Ni‑rare earth (RE) amorphous alloy. The present invention adopts rapid quenching and low-energy ball milling to prepare nano-TiF 3 and TiO 2 The magnesium-based amorphous alloy hydrogen storage material synergistically modified by nanotubes can not only ensure the high hydrogen storage capacity of the amorphous alloy, but also promote the efficient dissociation of hydrogen molecules on the surface of the alloy and rapid diffusion into the interior of the alloy, improving the hydrogen absorption and desorption power study.

Description

technical field [0001] The present invention relates to a kind of nano TiF 3 and TiO 2 A magnesium-based amorphous alloy hydrogen storage material and a preparation method thereof, which are synergistically modified by nanotubes, belong to the technical field of hydrogen storage materials. Background technique [0002] Hydrogen energy is a new type of clean energy with hydrogen as the carrier, but the storage of hydrogen energy has become a technical bottleneck to realize the hydrogen economy. Magnesium is cheap, rich in resources, and has considerable hydrogen storage capacity. However, pure magnesium directly used as a hydrogen storage medium not only has a high dehydrogenation temperature, but also has a slow hydrogen absorption and desorption kinetics. Add Ni and rare earth elements RE to form a ternary alloy by alloying, and then hydrogenate to form MgH 2 -Mg 2 NeH 4 -REH x Nanocomposites can greatly improve this. But at the same time, the hydrogen storage capac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/00B22D11/06C22C1/00
CPCC22C45/005B22D11/0611C22C2200/02C22C2202/04C22C1/11
Inventor 谭军周航李谦鲁杨帆陈玉安潘复生苏建章
Owner 广东省国研科技研究中心有限公司
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