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Short-process preparation method for rapidly activating hydrogen storage alloy by utilizing hydrogen-containing compound

A hydrogen storage alloy and hydrogen compound technology, applied in chemical instruments and methods, metal processing equipment, hydrogen, etc., can solve the diffusion effect of heat transfer and mass transfer, increase the overall cost of hydrogen storage materials and hydrogen storage devices, hydrogen storage The overall requirements of the device are complicated, and the effect of simple method, reduced production cost and improved production efficiency is achieved.

Pending Publication Date: 2020-08-14
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When pure hydrogen is used for activation, no matter whether the activation process takes place in the hydrogen storage device or in the production process of the hydrogen storage material, the overall cost of the hydrogen storage material and the hydrogen storage device will be greatly increased, and the overall requirements for the hydrogen storage device during the activation process will also be greatly increased. will get complicated
For example, if the device is large, the diffusion of heat transfer and mass transfer will be affected during the activation process; if the design of the device is too small, it will be limited by complex connections in the large-scale application of hydrogen refueling stations

Method used

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  • Short-process preparation method for rapidly activating hydrogen storage alloy by utilizing hydrogen-containing compound
  • Short-process preparation method for rapidly activating hydrogen storage alloy by utilizing hydrogen-containing compound
  • Short-process preparation method for rapidly activating hydrogen storage alloy by utilizing hydrogen-containing compound

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preparation example Construction

[0029] A short process preparation method for rapidly activating a hydrogen storage alloy using a hydrogen-containing compound, the method comprising:

[0030] Put the hydrogen storage alloy material and the active agent into the container, and mix uniformly in the reaction atmosphere to obtain the activated hydrogen storage alloy material;

[0031] According to the present invention, the hydrogen storage alloy material is selected from rare earth series AB X Type, titanium-iron series AB type, titanium-zirconium series AB 2 Type, magnesium series A 2 One or more of type B, titanium vanadium solid solution hydrogen storage alloy powder;

[0032] The rare earth series AB X Preferred types include:

[0033] RENi x-a-b m a mn b Al 0.1 , where RE is one or more elements of La, Ce, Pr, Nd, Sm, Gd; M is one or more elements of Cu, Fe, Co; 5≥x≥4.5, 1.0≥a≥ 0.1, 1.0≥b≥0.1, 1.5≥a+b>0;

[0034] or RE x Y y Ni z-a-b mn a Al b , where RE is one or several elements in La, Ce,...

Embodiment 1

[0046] Embodiment 1 prepares titanium vanadium solid solution system, and preparation method is as follows:

[0047] (1) Vacuumize the vacuum arc melting furnace to 2×10 -3 After Pa is filled with 0.5 atmospheres of high-purity argon with a purity of 99.99% (volume percent) as a protective gas, Ti metal (99.7% purity), V metal (99.9% purity) and Mn metal (99.5% purity) are charged according to TiV 1.1 mn 0.9 Weigh the chemical formula and put it into a vacuum electric arc furnace for smelting, the arc current is 300A, smelting 4 times, smelting for 2 minutes each time, and cooling naturally to obtain an alloy ingot, crushing the alloy ingot to 50-150 μm to obtain a hydrogen storage alloy to be activated powder.

[0048] (2) By weight percentage, accurately weigh the TiV obtained in step (1) respectively 1.1 mn 0.9 5g of material powder and 0.15g of commercially available aluminum trihydride material are put into a stainless steel ball mill tank in a glove box filled with a...

Embodiment 2

[0050] Embodiment 2 prepares titanium vanadium solid solution system, and preparation method is as follows:

[0051] 1) Vacuumize the vacuum arc melting furnace to 2×10 -3 After Pa is filled with 0.5 atmospheres of high-purity argon with a purity of 99.99% (volume percent) as a protective gas, Ti metal (99.7% purity), V metal (99.9% purity) and Mn metal (99.5% purity) are charged according to TiV 1.1 mn 0.9 Weigh the chemical formula and put it into a vacuum electric arc furnace for smelting, the arc current is 300A, smelting 4 times, smelting for 2 minutes each time, and cooling naturally to obtain an alloy ingot, crushing the alloy ingot to 50-150 μm to obtain a hydrogen storage alloy to be activated powder.

[0052] (2) By weight percentage, accurately weigh the TiV obtained in step (1) respectively 1.1 mn 0.9 5g of material powder and 0.40g of commercially available aluminum trihydride material are put into a stainless steel ball mill tank in a glove box filled with a ...

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Abstract

The invention provides a short-process preparation method for rapidly activating a hydrogen storage alloy by utilizing a hydrogen-containing compound, and relates to the field of hydrogen storage materials. The method comprises the following steps: putting a hydrogen storage alloy material and an active additive into a container, and uniformly mixing in a reaction atmosphere to obtain an activatedhydrogen storage alloy material, wherein the hydrogen storage alloy material is selected from one or more of rare earth ABX type hydrogen storage alloy powder, ferrotitanium AB type hydrogen storagealloy powder, titanium zirconium AB2 type hydrogen storage alloy powder, magnesium A2B type hydrogen storage alloy powder and titanium vanadium solid solution type hydrogen storage alloy powder, and the active additive is metal hydride. The hydrogen storage material prepared by the method not only completes the activation process, but also can absorb and desorb hydrogen without high-temperature orhigh-pressure activation process so that the production efficiency is improved, the production cost is reduced, and meanwhile, the original hydrogen storage capacity is maintained; the method is simple, quick and efficient, is particularly suitable for the activation process of the solid hydrogen storage material for the low-pressure hydrogen refueling station, and has important practical value for applying the hydrogen storage alloy material to hydrogen energy engineering.

Description

technical field [0001] The invention relates to the field of hydrogen storage materials, in particular to a short-flow preparation method for rapidly activating a hydrogen storage alloy by using a hydrogen-containing compound. Background technique [0002] Since the beginning of this century, hydrogen energy has attracted widespread attention for its clean combustion products and high calorific value. However, due to many technological challenges in the preparation, storage and application of hydrogen, the construction of a hydrogen fuel system is still immature. In particular, the construction of hydrogen energy infrastructure has become one of the key factors restricting the development of the hydrogen energy industry. For example, in the construction of hydrogen refueling stations, my country's national strategic plan clearly states that 1,000 hydrogen refueling stations are expected to be built by 2030. Most of the hydrogen refueling stations under construction and in ...

Claims

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Application Information

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IPC IPC(8): C01B3/00B22F1/00B22F9/04
CPCC01B3/0078C01B3/0031C01B3/0057B22F9/04B22F2009/043B22F1/14Y02E60/32
Inventor 梁飞王立民吴耀明程勇尹东明李守良任明安
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI