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Polymer wrapped nano magnesium based hydrogen storage material and preparation method thereof

A technology for hydrogen storage materials and polymers, applied in transportation and 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, alleviate volume shrinkage, and reduce particle size.

Active Publication Date: 2017-04-19
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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  • Polymer wrapped nano magnesium based hydrogen storage material and preparation method thereof
  • Polymer wrapped nano magnesium based hydrogen storage material and preparation method thereof
  • Polymer wrapped 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 wrapped nano magnesium based hydrogen storage material and a preparation method thereof, and belongs to the technical field of hydrogen storage material preparation. The hydrogen storage material is prepared from the following components in percentage by weight: 80 to 98% of magnesium-nickel alloy, and 2 to 20% of polymer. Magnesium powder and nickel powder are taken as the raw materials and then are mixed and preprocessed; the mixture is hydrogenated, burned, and synthesized, and finally the product and polymers are fiercely and mechanically ball-milled to prepare the hydrogen storage material. The hydrogen storage material has excellent low temperature hydrogen absorption / desorption dynamics performances: at a temperature of 473K, the hydrogen absorption amount can reach 3.73 wt.% with 60 minutes; the hydrogen desorption amount can reach 1.02 wt.% within 120 minutes; at a temperature of 523 K, the hydrogen absorption amount is as high as 4.04 wt.% within 60 minutes, and the hydrogen desorption amount can reach 2.18 wt.% within 120 minutes. The hydrogen storage material can be used to store / transport hydrogen and prepare hydrogen fuel battery.

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 Applications(China)
IPC IPC(8): C22C23/00B22F1/00
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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