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Aluminum-containing composite hydrogen storage alloy and its preparation method, composite solid hydrogen storage tank and hydrogen storage and discharge performance test method

A hydrogen storage alloy and aluminum composite technology, applied in fixed-capacity gas storage tanks, hydrogen technology, mechanical equipment, etc., can solve problems such as cracking damage, deformation of hydrogen storage tanks, safety accidents, etc., to achieve fast heat transfer rate, reduce crystal grains Growth, reducing the effect of grain boundary migration

Active Publication Date: 2022-02-11
JIANGSU JICUI ANTAI CHUANGMING ADVANCED ENERGY MATERIALS RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the volume of the hydrogen storage alloy expands by about 25% after hydrogen absorption, and the volume shrinks after dehydrogenation. Therefore, after multiple hydrogen absorption and desorption cycles, the hydrogen storage alloy will gradually pulverize. In the middle, it is very easy to flow with the flow of hydrogen gas, resulting in accumulation, so that the hydrogen storage device partially loses the gap, resulting in the deformation of the hydrogen storage tank during the hydrogen absorption and expansion of the hydrogen storage alloy, and even cracking and damage, causing safety accidents

Method used

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  • Aluminum-containing composite hydrogen storage alloy and its preparation method, composite solid hydrogen storage tank and hydrogen storage and discharge performance test method
  • Aluminum-containing composite hydrogen storage alloy and its preparation method, composite solid hydrogen storage tank and hydrogen storage and discharge performance test method
  • Aluminum-containing composite hydrogen storage alloy and its preparation method, composite solid hydrogen storage tank and hydrogen storage and discharge performance test method

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preparation example Construction

[0070] The preparation steps of hydrogen storage alloy powder; specifically, it includes smelting raw materials to prepare hydrogen storage alloy ingots, and then performing vacuum annealing and homogenization treatment on the alloy ingots, controlling the melting temperature to 1300°C to 1500°C, annealing and homogenization treatment The temperature is 800-1150° C., and the annealing time is 5-10 hours; the hydrogen-storage alloy ingot after the annealing is crushed and ball-milled to obtain hydrogen-storage alloy powder, and the particle size of the hydrogen-storage alloy powder is 75-300 μm.

[0071] Prepare aluminum material:

[0072] The aluminum material is spherical aluminum powder, and the hydrogen storage alloy powder and the spherical aluminum powder are mechanically stirred and mixed (you can use a mixer to mix and stir, and the stirring time can be set to 1-5 hours according to the amount of raw materials, which can be 1h, 2h, 3h, 4h , 5h), to be filled into the hy...

Embodiment 1

[0103] Prepare the aluminum material: select spherical aluminum powder with a particle size of 1-10 μm as the aluminum material.

[0104] Preparation of aluminum-containing composite hydrogen storage alloy powder: take 3200g of the above-mentioned hydrogen storage alloy powder, weigh 565g of spherical aluminum powder, the aluminum powder accounts for 15% of the total mass of the composite material (i.e. hydrogen storage alloy powder and aluminum powder), mix the two with a mixer Mixing is carried out for 2 hours, and then all the aluminum-containing composite hydrogen storage alloy powder is filled into the hydrogen storage tank body, and the aluminum-containing composite hydrogen storage alloy powder accounts for about 80% of the volume of the hydrogen storage tank body.

[0105] Charge hydrogen and activate the aluminum-based hydrogen storage alloy powder in the hydrogen storage tank: install the hydrogen storage tank on the hydrogen storage tank hydrogen charging and activat...

Embodiment 2

[0109] Prepare aluminum material: choose aluminum foil with a thickness of 0.3mm as the composite aluminum material, and divide it into strips with a length of 270mm and a width of 80mm.

[0110] Preparation of aluminum-based hydrogen storage alloy powder: Weigh 80g of hydrogen storage alloy powder and spread it on the aluminum foil, continue to spread aluminum foil of the same size on the alloy powder, continue to weigh the same mass of hydrogen storage alloy powder and spread it on the aluminum foil, Carry out the above operations in sequence until the number of layers of aluminum foil and hydrogen storage alloy powder reaches 40 layers, that is, the uppermost layer is the hydrogen storage alloy powder layer, and all 40 layers of aluminum foil alloy powder "sandwiches" are filled into the hydrogen storage tank with the opening at the top of the straight cylinder. tank, and then seal the hydrogen storage tank.

[0111] Charge hydrogen and activate the aluminum-based hydrogen ...

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Abstract

The invention relates to an aluminum-containing composite hydrogen storage alloy and a preparation method thereof, a composite solid hydrogen storage tank and a hydrogen storage and discharge performance testing method. The aluminum-containing composite hydrogen storage alloy is made of 80%-98% hydrogen storage alloy powder and 2%-20% aluminum material in terms of mass percentage. The composite solid hydrogen storage tank provided by the present invention can discharge hydrogen at a flow rate of 8L / Min at 50°C, the hydrogen discharge time can reach 60min, the hydrogen discharge volume can reach 480L, and the maximum hydrogen discharge volume can reach the hydrogen storage capacity of the hydrogen storage tank 90% of.

Description

technical field [0001] The invention belongs to the technical field of preparation of hydrogen storage materials, and in particular relates to an aluminum-containing composite hydrogen storage alloy made based on an aluminum material combined with a hydrogen storage alloy, a preparation method of an aluminum-containing composite hydrogen storage alloy, and a preparation method using the aluminum-containing composite hydrogen storage alloy A composite solid-state hydrogen storage tank and a method for testing the hydrogen storage performance of the composite solid-state hydrogen storage tank. Background technique [0002] The depletion of fossil energy and the crisis of environmental pollution force human beings to develop renewable and clean energy. Hydrogen is a clean secondary energy and an ideal carrier of renewable primary energy. In the 1970s, General Motors of the United States put forward the concept of "hydrogen economy era" to describe the future where hydrogen wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F5/00B22F7/04F17C11/00G01N7/16H01M8/04082
CPCB22F7/04B22F5/00G01N7/16H01M8/04216F17C11/005F17C2201/0104F17C2201/058F17C2203/0646F17C2203/0648F17C2221/012F17C2225/0123F17C2265/01F17C2265/04F17C2250/0439F17C2250/043F17C2250/0473Y02P90/45Y02E60/32Y02E60/50
Inventor 原建光武英张宝阎有花周少雄
Owner JIANGSU JICUI ANTAI CHUANGMING ADVANCED ENERGY MATERIALS RES INST CO LTD
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