Supercharge Your Innovation With Domain-Expert AI Agents!

MgH2/Mg transition metal boride composite hydrogen storage material and preparation method thereof

A technology of transition metals and hydrogen storage materials, applied in the production of hydrogen, etc., to achieve safe storage and transportation, improve kinetic performance, and reduce hydrogen storage temperature

Inactive Publication Date: 2014-11-05
NANKAI UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the addition of transition metal borides to magnesium-based hydrogen storage alloy materials to prepare magnesium-based composite hydrogen storage materials has not been reported.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • MgH2/Mg transition metal boride composite hydrogen storage material and preparation method thereof
  • MgH2/Mg transition metal boride composite hydrogen storage material and preparation method thereof
  • MgH2/Mg transition metal boride composite hydrogen storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] MgH 2 Preparation and Kinetic Properties of +5wt%NiB Composite Hydrogen Storage Materials

[0026] In an anhydrous and oxygen-free glove box, magnesium hydride powder (purity 98%) and NiB were mixed according to MgH 2 The ratio of +5wt%NiB is mixed and added to the ball mill tank, put stainless steel balls, the weight ratio of the ball to material is 40:1, and seal; the ball mill tank is vacuumed, filled with argon and hydrogen for cleaning three times, and then filled with 2Mpa The high-purity hydrogen gas is milled for 1 hour by high-energy ball milling at a speed of 450 r / min to obtain the desired product.

[0027] Pure MgH was prepared under the same conditions 2 Compared with composite hydrogen storage materials.

[0028] figure 1 MgH prepared for ball milling 2 The XRD pattern of +5wt%NiB before and after dehydrogenation, it can be seen from the XRD pattern that the sample after ball milling is mainly MgH 2 , while the sample after dehydrogenation is mainly ...

Embodiment 2

[0033] MgH 2 Preparation and Kinetic Properties of +15wt%NiB Composite Hydrogen Storage Material

[0034] In an anhydrous and oxygen-free glove box, magnesium hydride powder (purity 98%) and NiB were mixed according to MgH 2 The ratio of +15wt%NiB is mixed and added to the ball mill tank, put stainless steel balls, the weight ratio of the ball to material is 20:1, and seal; the ball mill tank is vacuumed, filled with argon and cleaned three times, and then filled with 0.1Mpa high-purity Argon, using high-energy ball milling at a speed of 200r / min for 15 hours to obtain the desired product. The prepared hydrogen storage alloy can release hydrogen at 450K, and 5.6wt% hydrogen can be released within 15 minutes at 573K.

Embodiment 3

[0036] MgH 2 Preparation and Kinetic Properties of +15wt%CoB Composite Hydrogen Storage Material

[0037] Magnesium hydride powder (purity 98%) and CoB according to MgH 2 The ratio of +15wt% CoB is mixed and added to the ball mill tank, put stainless steel balls, the weight ratio of the ball to material is 40:1, and seal; the ball mill tank is vacuumed and filled with argon and hydrogen for three times, and then filled with 0.1Mpa For high-purity hydrogen, the desired product is obtained after high-energy ball milling at a speed of 200r / min for 15 hours.

[0038] Figure 6 is MgH 2 The hydrogen desorption kinetic curves of +15wt% CoB at different temperatures and 0.01Mpa hydrogen pressure, it can be seen from the figure that at 503K, the composite hydrogen storage material can desorb 3.83wt% hydrogen within 80min. As the temperature increases, the hydrogen release rate also increases. At 573K, the amount of hydrogen released within 15min is 5.06wt%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an MgH2 / Mg transition metal boride composite hydrogen storage material and a preparation method thereof; the composite hydrogen storage material has the general formula of MgH2 / Mg+xwt% MB, wherein MB is transition metal boride, and x is more than or equal to 0 and less than or equal to 15. The preparation method of the material comprises the following steps of: evenly mixing magnesium hydride powder or magnesium metal powder and the transition metal boride according to a certain weight percent, and then synthesizing the composite hydrogen storage material by ball-milling for 1-15h under the protective atmosphere of 0.1-2 Mpa argon or hydrogen under the conditions of 200-450rpm and the ball-to-powder weight ratio of (20-40):1. According to the invention, the transition metal boride is added, so that the dynamics performance of the composite hydrogen storage material is greatly improved, and the hydrogen storage temperature of the composite hydrogen storage material is also reduced.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage materials, in particular to a MgH 2 / Mg transition metal boride composite hydrogen storage material and preparation method thereof. Background technique [0002] After entering the 21st century, sustainable energy development and environmental protection have become hot issues of concern to human society. Traditional fossil energy is gradually exhausted due to its non-renewability, forcing people to seek and develop renewable and clean new energy sources. Among them, hydrogen energy is recognized as an ideal secondary energy source with the most development potential for human beings in the future due to its cleanliness, high efficiency, and wide range of sources, which has attracted extensive research from all over the world. However, in the current hydrogen energy system, the safe and efficient storage and transportation of hydrogen is still one of the bottlenecks in the development of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/04C01B3/08
CPCY02E60/364Y02E60/36
Inventor 王一菁袁华堂焦丽芳刘光李丽仇方圆闫超
Owner NANKAI UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com