Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Magnesium hydride (MgH2) and ferrum-containing sulfide composite hydrogen storage material and preparation method thereof

A hydrogen storage material and sulfide technology, applied in the production of hydrogen and other directions, can solve the problems of high price, limitation, and insignificant improvement of dehydrogenation temperature, and achieve the effects of low cost, low energy consumption, and easy industrialization and promotion.

Inactive Publication Date: 2013-10-23
YANSHAN UNIV
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Documents I.E.Malka, M.Pisarek, T.Czujko, J.Bystrzycki.Journal of Hydrogen Energy.36(2011) 12909-12917 proposed that MgH 2 Adding a series of transition metal halides in the alloy, the hydrogen absorption and desorption rate of the alloy obtained by ball milling has been improved, but the dehydrogenation temperature is not significantly improved. At the same time, some transition metal halides such as NbF 5 The price is relatively expensive, which limits its practicality

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
  • Magnesium hydride (MgH2) and ferrum-containing sulfide composite hydrogen storage material and preparation method thereof
  • Magnesium hydride (MgH2) and ferrum-containing sulfide composite hydrogen storage material and preparation method thereof
  • Magnesium hydride (MgH2) and ferrum-containing sulfide composite hydrogen storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In an argon-protected glove box, the MgH 2 Powder and Fe 3 S 4 The powder is mixed according to the mass ratio of 4:1 and placed in a ball mill tank. The ball quality is stainless steel. The ball mill is a Pulverisette6 planetary ball mill. The time is 2 hours, and then filled with 0.1MPa high-purity argon gas, adopts high-energy ball milling method, after the ball milling is completed, it is naturally cooled to room temperature, and packaged under an argon-protected glove box. MgH prepared by ball milling 2 Composite hydrogen storage materials were tested for hydrogen absorption rate, and the results were as follows: figure 1 shown. It can be seen from the hydrogen absorption rate curve at 423K in the figure that the MgH 2 Fe 3 S 4 The composite hydrogen storage material prepared after ball milling can reach 80% of the maximum hydrogen absorption capacity in 30s, and in about 25 minutes, the hydrogen absorption capacity is 3.5 times that of the alloy without add...

Embodiment 2

[0025] In an argon-protected glove box, the MgH 2 Powder and Fe 3 S 4 The powder is mixed according to the mass ratio of 9:1 and placed in a ball mill tank. The ball quality is stainless steel. The ball mill is a Pulverisette6 planetary ball mill. The time is 3 hours, and then filled with 0.5MPa high-purity argon gas, using high-energy ball milling method, after the ball milling is completed, it is naturally cooled to room temperature, and packaged under an argon-protected glove box. MgH prepared by ball milling 2 Composite hydrogen storage materials were tested for hydrogen absorption rate, and the results were as follows: figure 2 shown. It can be seen from the hydrogen absorption rate curve at 473K in the figure that the MgH 2 Fe 3 S 4 The composite hydrogen storage material prepared after ball milling can reach 80% of the maximum hydrogen absorption capacity in 30s, without adding Fe 3 S 4 MgH 2 It takes 900 seconds for the sample to reach 80% of the maximum hyd...

Embodiment 3

[0027] In an argon-protected glove box, the MgH 2 Powder and Fe 3 S 4 The powder is mixed and placed in a ball mill tank with a mass ratio of 7:3. The ball quality is stainless steel. The ball mill is a Pulverisette6 planetary ball mill. The time is 3 hours, and then filled with 0.1MPa high-purity argon gas, using high-energy ball milling method, after the ball milling is completed, it is naturally cooled to room temperature, and packaged under an argon-protected glove box. MgH prepared by ball milling 2 Composite hydrogen storage materials were tested for hydrogen desorption rate, and the results were as follows: image 3shown. It can be seen from the hydrogen desorption rate curve at 573K in the figure that the MgH 2 Fe 3 S 4 The composite hydrogen storage material prepared after ball milling can reach 80% of the maximum hydrogen release capacity in 200s, without adding Fe 3 S 4 MgH 2 It takes 1000s to reach 80% of the maximum hydrogen release. It can be seen that...

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

No PUM Login to View More

Abstract

The invention discloses a magnesium hydride (MgH2) and ferrum-containing sulfide composite hydrogen storage material and a preparation method thereof. The composite hydrogen storage material comprises MgH2 and 10-30 wt% of ferrum-containing sulfide, wherein the ferrum-containing sulfide is Fe3S4 or FeS or FeS2. The method comprises the following steps of: adding the ferrum-containing sulfide which serves as an additive into MgH2, and carrying out ball milling at the pressure of 0.1-0.5MPa in the atmosphere of high-purity argon to prepare the composite hydrogen storage material. The hydrogen absorption and desorption rate of the MgH2 and ferrum-containing sulfide composite hydrogen storage material is over 2 times higher that that of the MgH2 hydrogen storage material which contains no ferrum-containing sulfide. The MgH2 and ferrum-containing sulfide composite hydrogen storage material is simple in preparation process, has stable performances and can be used for storing hydrogen in the field of fuel cells.

Description

technical field [0001] The invention relates to a magnesium metal hydride-containing iron sulfide composite hydrogen storage material and a preparation method thereof, belonging to the technical field of hydrogen storage materials. Background technique [0002] With the development of society, hydrogen energy, as a new type of energy, has received extensive attention. The use of hydrogen storage materials to store hydrogen is considered to be safe and efficient, and the current ideal is Mg / MgH 2 Although the system has high hydrogen storage capacity and low cost, its kinetic performance is poor and the requirements for hydrogen absorption and desorption are relatively high, which hinders its practical application. [0003] In recent years, many researchers have introduced MgH 2 Add additives to improve the hydrogen absorption / desorption performance of magnesium hydrogen storage materials. The product mentioned in the patent application with application number 201210045648...

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
IPC IPC(8): C01B3/06
CPCY02E60/362Y02E60/36
Inventor 韩树民程颖张伟赵鑫李靖
Owner YANSHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com