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Carbonic composite hydrogen storage alloy and preparation method thereof, composite solid hydrogen storage tank and hydrogen storage performance testing method

A hydrogen storage alloy and hydrogen storage tank technology, which is applied in fixed-capacity gas storage tanks, mechanical equipment, reactant parameter control, etc., can solve problems such as safety accidents, deformation of hydrogen storage tanks, cracking damage, etc. The effect of fast heat transfer rate and high hydrogen storage density

Active Publication Date: 2020-02-14
JIANGSU JICUI ANTAI CHUANGMING ADVANCED ENERGY MATERIALS RES INST CO LTD
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  • Abstract
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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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  • Carbonic composite hydrogen storage alloy and preparation method thereof, composite solid hydrogen storage tank and hydrogen storage performance testing method
  • Carbonic composite hydrogen storage alloy and preparation method thereof, composite solid hydrogen storage tank and hydrogen storage performance testing method
  • Carbonic composite hydrogen storage alloy and preparation method thereof, composite solid hydrogen storage tank and hydrogen storage performance testing method

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preparation example Construction

[0040] The preparation steps of hydrogen storage alloy powder: specifically include melting raw materials to prepare hydrogen storage alloy ingots, and then performing vacuum annealing homogenization treatment on the alloy ingots, the temperature of the melting is 1300 ° C ~ 1500 ° C The homogenization treatment temperature is 800-1150° C., and the annealing time is 5-10 hours; then, the annealed hydrogen storage alloy ingot is crushed and ball milled to obtain the hydrogen storage alloy powder with a particle size of 75-300 μm.

[0041] Prepare carbon materials;

[0042] When the carbon material is a graphite material, the graphite material can be one or more of high-purity graphite, expanded graphite and flake graphite balls, and its particle size is in the order of μm, preferably 100-500 μm, more preferably 100-500 μm. 200 μm; when the carbon material is activated carbon, the activated carbon can be one or more of black powder or block, granular, and honeycomb activated car...

Embodiment 1

[0069] Preparation of carbon material: micron-sized spherical high-purity graphite of 100-200 μm is selected as the carbon material.

[0070] Preparation of composite hydrogen storage alloy powder: take 3200g of the above hydrogen storage alloy powder, 355.6g of high-purity graphite, high-purity graphite accounts for 10% of the total mass of the composite material, mix the two with a mixer, and the mixing time is 2h, and then the composite material Filled into the hydrogen storage tank, the composite hydrogen storage alloy powder accounts for about 80% of the volume of the hydrogen storage tank.

[0071] Charge hydrogen and activate the composite hydrogen storage alloy powder in the hydrogen storage tank: install the hydrogen storage tank on the hydrogen storage tank hydrogen charging and activation treatment device, put the hydrogen storage tank in the heating jacket, and control the temperature at 90°C. Connect with the vacuum pump, open the ball valve and vacuum pump, pump ...

Embodiment 2

[0075] Preparation of carbon material: Activated carbon with a particle size of 100-200 μm is selected as the carbon material.

[0076] Preparation of composite hydrogen storage alloy powder: Take 3200g of the above hydrogen storage alloy powder, 355.6g of powdered activated carbon ink, powdered activated carbon accounts for 10% of the total mass of the composite material, mix the two with a mixer, the mixing time is 2h, and then the composite The material is filled into the hydrogen storage tank, and the composite hydrogen storage alloy powder accounts for about 80% of the volume of the hydrogen storage tank.

[0077] Charge hydrogen and activate the composite hydrogen storage alloy powder in the hydrogen storage tank: install the hydrogen storage tank on the hydrogen storage tank hydrogen charging and activation treatment device, put the hydrogen storage tank in the heating jacket, and control the temperature at 90°C. Connect with the vacuum pump, open the ball valve and vac...

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Abstract

The invention discloses a carbonic composite hydrogen storage alloy and a preparation method thereof, a composite solid hydrogen storage rank made from the carbonic composite hydrogen storage alloy, and a method for performing hydrogen storage performance testing on the composite solid hydrogen storage tank. The carbonic composite hydrogen storage alloy is prepared from, by mass, 90-98% of hydrogen storage alloy powder and 2-10% of carbon materials. The method for preparing the carbonic composite hydrogen storage alloy comprises the following steps of preparing the hydrogen storage alloy powder, preparing the carbon materials and mixing the carbon materials and the hydrogen storage alloy powder to obtain the carbonic composite hydrogen storage alloy. The prepared composite solid hydrogen storage tank can be used for the fields of hydrogen purification, fuel cell hydrogen source storage, fixed energy storage and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of hydrogen storage materials, and in particular relates to a carbon-containing composite hydrogen storage alloy based on a carbon material combined with a hydrogen storage alloy, a method for preparing a carbon-containing composite hydrogen storage alloy, and a method for preparing a carbon-containing composite hydrogen storage alloy using the carbon-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...

Claims

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Application Information

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