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A polymer-coated nano-magnesium-based hydrogen storage material and preparation method thereof

A technology for hydrogen storage materials and polymers, used in transportation, packaging, metal processing equipment, etc., can solve the problem of high hydrogen absorption and desorption temperature, achieve excellent low temperature hydrogen absorption and desorption performance, ease volume shrinkage, and reduce grain boundary migration.

Active Publication Date: 2019-08-27
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the practical application of magnesium-based hydrogen storage alloys faces the main problem of high hydrogen absorption and desorption temperature (thermodynamic stability), usually above 573K

Method used

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  • A polymer-coated nano-magnesium-based hydrogen storage material and preparation method thereof
  • A polymer-coated nano-magnesium-based hydrogen storage material and preparation method thereof
  • A polymer-coated nano-magnesium-based hydrogen storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 Mg 95 Ni 5 Preparation of -5%PMMA nano-magnesium-based hydrogen storage material

[0043] (1) Put 9.5g of magnesium powder and 0.5g of nickel powder into a beaker for mixing pretreatment, add 40mL of acetone as a dispersant, use ultrasonic mixing for 1h, ultrasonic power is 1kW, and then dry at 80°C for 8h , to obtain magnesium-nickel mixed powder;

[0044] (2) The magnesium-nickel mixed powder is synthesized by hydrogenation combustion method. During the synthesis process, the magnesium-nickel mixed powder is heated to 580°C for 2h in a 2MPa hydrogen atmosphere, then cooled to 340°C for 4h, and finally cooled to room temperature to obtain a powder shaped magnesium-nickel alloy.

[0045] (3) Get 0.1g PMMA and put it into a beaker, add 20mL tetrahydrofuran, stir for 1h, be mixed with a polymer solution, get 1.9g of the powdered magnesium-nickel alloy obtained in step (2) and put it into a ball mill jar, and put the configured high Put the molecular solution...

Embodiment 2

[0049] Example 2 Mg 95 Ni 5 Preparation of -10%PMMA nano-magnesium-based hydrogen storage material

[0050] (1) Put 9.5g of magnesium powder and 0.5g of nickel powder into a beaker for mixing pretreatment, add 40mL of acetone as a dispersant, use ultrasonic mixing for 1h, ultrasonic power is 1kW, and then dry at 80°C for 8h, Obtain magnesium-nickel mixed powder;

[0051] (2) The magnesium-nickel mixed powder is synthesized by hydrogenation combustion method. During the synthesis process, the magnesium-nickel mixed powder is heated to 580°C for 2h in a 2MPa hydrogen atmosphere, then cooled to 340°C for 4h, and finally cooled to room temperature to obtain a powder shaped magnesium-nickel alloy.

[0052] (3) Get 0.2g PMMA and put it into a beaker, add 20mL tetrahydrofuran, stir for 1h, be mixed with a polymer solution, get 1.8g of the powdered magnesium-nickel alloy obtained in step (2) and put it into a ball mill jar, and put the configured high Put the molecular solution in...

Embodiment 3

[0056] Example 3 Mg 95 Ni 5 Preparation of -20%PMMA nano-magnesium-based hydrogen storage material

[0057] (1) Put 9.5g of magnesium powder and 0.5g of nickel powder into a beaker for mixing pretreatment, add 40mL of acetone as a dispersant, use ultrasonic mixing for 1h, ultrasonic power is 1KW, and then dry at 80°C for 8h , to obtain magnesium-nickel mixed powder;

[0058] (2) The magnesium-nickel mixed powder is synthesized by hydrogenation combustion method. During the synthesis process, the magnesium-nickel mixed powder is heated to 580°C for 2h in a 2MPa hydrogen atmosphere, then cooled to 340°C for 4h, and finally cooled to room temperature to obtain a powder shaped magnesium-nickel alloy.

[0059] (3) Get 0.4g PMMA and put it into a beaker, add 20mL tetrahydrofuran, stir for 1h, be mixed with a polymer solution, get 1.6g of the powdered magnesium-nickel alloy obtained in step (2) and put it into a ball mill jar, and put the configured high Put the molecular solutio...

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Abstract

The invention relates to a polymer-coated nano-magnesium-based hydrogen storage material and a preparation method thereof, belonging to the technical field of hydrogen storage material preparation. The polymer-coated nano-magnesium-based hydrogen storage material is made of the following components according to mass percentage: magnesium-nickel alloy: 80-98%, polymer: 2-20%; magnesium powder and nickel powder are used as raw materials after mixing It is prepared by pretreatment, hydrogenation combustion synthesis, and then with polymer through strong mechanical ball milling. The polymer-coated nano-magnesium-based hydrogen storage material provided by the present invention has excellent low-temperature hydrogen absorption and desorption kinetics properties: at 473K, within 60 minutes, the hydrogen absorption amount reaches 3.73wt.%, and within 120 minutes, the hydrogen release amount reaches 1.02 wt.%; at 523K, within 60 minutes, its hydrogen absorption is as high as 4.04wt.%, and within 120 minutes, its hydrogen release is as high as 2.18wt.%. It can be used for hydrogen storage and transportation and hydrogen fuel cells.

Description

technical field [0001] The invention relates to a high-performance nano-magnesium-based hydrogen storage material and a preparation method thereof, in particular to a polymer-coated nano-magnesium-based hydrogen storage material and a preparation method thereof, belonging to the technical field of hydrogen storage material preparation. 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. Hydrogen storage is the key to the development and utilization of hydrogen energy. At present, many developed countries have listed hydrogen storage technology research as a major scientific and technological plan project. Magnesium-based hydrogen storage materials, due to abundant resources, low price and large hydrogen storage capacity (MgH 2 Theoretical hydrogen storage is 7.6wt.%, which meets t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02
CPCC22C23/00C22C2202/04B22F1/102
Inventor 原建光武英李李泉朱云峰况春江周少雄
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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