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A kind of high-capacity magnesium-based composite hydrogen storage material and its preparation method

A hydrogen storage material and high-capacity technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve problems such as restricting the rapid development of hydrogen energy, and achieve good hydrogen absorption and desorption kinetic performance, high degree of hydrogenation, and material size. uniform effect

Active Publication Date: 2022-04-29
ADVANCED TECHNOLOGY & MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, how to store and transport hydrogen safely, efficiently and at low cost still restricts the rapid development of hydrogen energy

Method used

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  • A kind of high-capacity magnesium-based composite hydrogen storage material and its preparation method
  • A kind of high-capacity magnesium-based composite hydrogen storage material and its preparation method
  • A kind of high-capacity magnesium-based composite hydrogen storage material and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0041] The high-capacity Mg of the present invention x Al 100-x - A method for preparing a y(z wt%Ni@Gn) composite hydrogen storage material, comprising the steps of:

[0042] (1) Mix 30ml of concentrated nitric acid with 1g of graphene nanosheets, heat and stir in an oil bath at 120°C for 6h, then dilute the obtained mixed solution to neutrality and filter, dry in an oven, and set aside;

[0043] (2) with the graphene material after the above-mentioned treatment and nickel nitrate hexahydrate, control the mass ratio of nickel in graphene and nickel nitrate hexahydrate to be 20:80 (that is, the content of Ni accounts for the proportion of the graphene material and nickel nitrate hexahydrate 80wt% of the total amount), added into acetone for ultrasonic dissolution for 1h, then placed in an oven at 52°C for 24h, and set aside;

[0044] (3) The dry product obtained in step (2) is placed in a tube furnace, calcined at 400° C. for 4 h under an argon atmosphere, and then calcined ...

Embodiment 2

[0054] The high-capacity Mg of the present invention x Al 100-x - A method for preparing a y(z wt%Ni@Gn) composite hydrogen storage material, comprising the steps of:

[0055] (1) Mix 30ml of concentrated nitric acid with 1g of graphene nanosheets, heat and stir in an oil bath at 120°C for 6h, then dilute the obtained mixed solution to neutrality and filter, dry in an oven, and set aside;

[0056] (2) With the above-mentioned treated graphene material and nickel nitrate hexahydrate, the mass ratio of nickel in graphene and nickel nitrate hexahydrate is controlled to be 20:80, add in acetone and carry out ultrasonic dissolution for 1h, then place it in an oven at 52 ℃ to dry for 24h, set aside;

[0057] (3) The dry product obtained in step (2) is placed in a tube furnace, calcined at 400° C. for 4 h under an argon atmosphere, and then calcined at 450° C. for 4 h under a hydrogen atmosphere to obtain a product that is a graphene-supported nickel catalyst. spare;

[0058] (4)...

Embodiment 3

[0062] The high-capacity Mg of the present invention x Al 100-x - A method for preparing a y(z wt%Ni@Gn) composite hydrogen storage material, comprising the steps of:

[0063] (1) Mix 30ml of concentrated nitric acid with 1g of graphene nanosheets, heat and stir in an oil bath at 120°C for 6h, then dilute the obtained mixed solution to neutrality and filter, dry in an oven, and set aside;

[0064] (2) With the above-mentioned treated graphene material and nickel nitrate hexahydrate, the mass ratio of nickel in graphene and nickel nitrate hexahydrate is controlled to be 20:80, add in acetone and carry out ultrasonic dissolution for 1h, then place it in an oven at 52 ℃ to dry for 24h, set aside;

[0065] (3) The dry product obtained in step (2) is placed in a tube furnace, calcined at 400° C. for 4 h under an argon atmosphere, and then calcined at 450° C. for 4 h under a hydrogen atmosphere to obtain a product that is a graphene-supported nickel catalyst. spare;

[0066] (4)...

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Abstract

The invention belongs to the technical field of hydrogen storage materials, in particular to a high-capacity magnesium-based composite hydrogen storage material, and more particularly to a high-capacity Mg-based composite hydrogen storage material x Al 100‑x ‑y(z wt% Ni@Gn) composite hydrogen storage material, and its preparation method is further disclosed. The high-capacity magnesium-based Mg of the present invention x Al 100‑x ‑y(z wt% Ni@Gn) composite hydrogen storage material with main phase MgH 2 It is granular, and phases such as Ni, Al, and graphene are distributed in MgH 2 Around the particles, and each phase is uniformly distributed, the composition is uniform, the material size is relatively uniform, and the hydrogen storage capacity is as high as 5.85wt%. Compared with pure magnesium and other comparative samples, the magnesium-based composite hydrogen storage of the present invention has better absorption The kinetic performance of hydrogen desorption can be used in mobile power supply devices, hydrogen supply sources for vehicle-mounted hydrogen storage systems, etc.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage materials, in particular to a high-capacity magnesium-based composite hydrogen storage material, more specifically to a high-capacity Mg x Al 100-x -y(z wt% Ni@Gn) composite hydrogen storage material, and further discloses its preparation method. Background technique [0002] In recent decades, the use of fossil fuels has promoted the development of the world, but it is also accompanied by problems such as resource depletion and environmental pollution. As a viable energy carrier in the future, hydrogen is considered to be an ideal substitute for fossil fuels due to its high energy density and non-polluting emissions. However, due to the low density of hydrogen at normal temperature and pressure, this also seriously hinders its practical application. Hydrogen storage materials are a class of materials that have good adsorption properties for hydrogen or can reversibly react with hydrog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/12B22F9/04B22F3/23C22C29/00C22C1/05C01B3/00
CPCB22F1/0003B22F9/04B22F3/23C22C29/00C22C1/05C01B3/0078C01B3/0031B22F2009/043Y02E60/32
Inventor 武英原建光张宝阎有花黄海翔
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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