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High-performance nano magnesium-based hydrogen storage material and preparation method thereof

A hydrogen storage material and nano-magnesium technology, which is applied in the fields of nanotechnology, nanotechnology, and nanotechnology for materials and surface science, can solve the problems of unsatisfactory hydrogen absorption and desorption kinetic performance and high hydrogen desorption temperature.

Inactive Publication Date: 2016-05-18
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although through unremitting efforts, the hydrogen absorption temperature of magnesium-based hydrogen storage materials can be reduced to 373K, but its hydrogen absorption and desorption kinetics are still not ideal; in addition, magnesium-based hydrogen storage materials need to be around 573K to fully desorb hydrogen. Hydrogen release temperature is still high

Method used

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  • High-performance nano magnesium-based hydrogen storage material and preparation method thereof
  • High-performance nano magnesium-based hydrogen storage material and preparation method thereof
  • High-performance nano magnesium-based hydrogen storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment l95

[0057] Preparation of Example 195Mg-1.5Pd-1.5Ni-2GN Nano Magnesium-based Hydrogen Storage Material

[0058] (1) Preparation of graphene-supported nickel and palladium powders:

[0059] (a) Putting graphene nanosheets into concentrated HNO 3 In the solution, reflux at 140°C for 8 hours, cool to room temperature, wash with deionized water to neutrality and dry to obtain functionalized graphene powder;

[0060] (b) 0.4g functionalized graphene powder and 1.4865g Ni(NO 3 ) 2 ·6H 2 O (the mass ratio of nickel to graphene is 3:4) was added to 30mL of acetone reagent, mixed ultrasonically and then dried; the dried powder was calcined in an argon atmosphere at 400°C for 4h, and then heated at 450°C Reduction in a hydrogen atmosphere for 4 hours, and finally cooled naturally to room temperature to obtain graphene-supported nano-nickel particle powder;

[0061](c) Mix 0.7g of graphene-loaded nano-nickel particle powder with ethylene glycol reagent, and ultrasonically mix for 1h to ...

Embodiment 295

[0093] Embodiment 295Mg-1.4Pd-1.4Ni-2.2GN

[0094] (1) Preparation of graphene-supported nickel and palladium powders:

[0095] (a) Putting graphene nanosheets into concentrated HNO 3 In the solution, reflux at 140°C for 8 hours, cool to room temperature, wash with deionized water to neutrality and dry to obtain functionalized graphene powder;

[0096] (b) Add 0.6g of functionalized graphene powder and 1.97g of Ni(NO3)2·6H2O (the mass ratio of nickel to graphene is 2:3) into 30mL of acetone reagent, and dry it after ultrasonic mixing; The final powder was calcined in an argon atmosphere at 400°C for 4h, then reduced in a hydrogen atmosphere at 450°C for 4h, and finally cooled naturally to room temperature to obtain a graphene-loaded nickel nanoparticle powder;

[0097] (c) 1.0g graphene-loaded nano-nickel particle powder is mixed with 30mL ethylene glycol reagent, and ultrasonic 1h mixes homogeneously to make mixed solution; 0.668gPdCl Powder (nickel and palladium content ma...

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Abstract

The invention discloses a high-performance nano magnesium-based hydrogen storage material and a preparation method thereof. The high-performance nano magnesium-based hydrogen storage material is prepared from the following components in percentage by mass: 93-97% of magnesium, and 3-7% of a graphene nickel and palladium supported catalyst. The preparation method for the high-performance nano magnesium-based hydrogen storage material comprises a ball-milling pretreatment step; a hydriding combustion synthesis step and a strong ball-milling after-treatment step. The nano magnesium-based hydrogen storage material prepared by the preparation method has high activity, high capacity and excellent hydrogen absorption and desorption performances.

Description

technical field [0001] The invention belongs to the field of material preparation, and relates to a nano-magnesium-based hydrogen storage material, in particular to a high-performance nano-magnesium-based hydrogen storage material catalyzed by graphene-loaded palladium and nickel bimetals and a preparation method thereof. Background technique [0002] Energy is one of the three pillars of the world today and the source of human social activities. With the continuous progress and development of human society, the energy crisis caused by the massive consumption of fossil energy such as coal, oil and natural gas and the resulting environmental problems are the most severe test that mankind faces in the 21st century. Seeking and developing clean and renewable new energy sources to replace traditional fossil energy sources and realize the sustainable development of human society is a severe challenge for all human beings, especially for some oil-poor countries. Due to its large ...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/10B82Y30/00
CPCC22C23/00B82Y30/00C22C1/1084
Inventor 原建光李李泉武英朱云峰况春江周少雄
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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