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

Rare earth hydrogen storage material and preparation method thereof

A hydrogen storage material and rare earth technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problems of alloy structure change, capacity decline, etc., to reduce hydrogen-induced amorphization, increase hydrogen storage capacity, and reduce hydrogen disproportionate effect

Active Publication Date: 2020-09-11
GRIMAT ENG INST CO LTD
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual hydrogen storage capacity is only about 1.7wt.%, the alloy structure changes after hydrogen absorption and desorption, and the capacity drops significantly

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
  • Rare earth hydrogen storage material and preparation method thereof
  • Rare earth hydrogen storage material and preparation method thereof
  • Rare earth hydrogen storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The following examples are provided to further explain the present invention, but the protection scope of the present invention is not limited to the following examples.

[0026] A rare earth hydrogen storage material, the rare earth hydrogen storage material is composed of the general formula Y a A b Mg c Ni x B y The yttrium-magnesium-nickel-based hydrogen storage material; in its general formula, A is one or several elements in La, Ce, Pr, Nd, Sm, Gd, and B is Al, V, Mn, Fe, Co, Cu , One or several elements in Zn, where 0.3≤a<1, 0

[0027] A rare earth hydrogen storage material of the present invention has AB 2 Type(Y,A,Mg)(Ni,B) 2 Phase, A 2 B 4 Type(Y,A)Mg(Ni,B) 4 Phase and AB 3 Type(Y,A,Mg)(Ni,B) 3 The mixed-phase structure of the phase; the mixed-phase structure starts with AB 2 Type(Y,A,Mg)(Ni,B) 2 Phase is the...

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 rare earth hydrogen storage material and a preparation method thereof, and relates to AB2-type yttrium-magnesium-nickel base rare earth hydrogen storage materials. The rare earth hydrogen storage material thereof is a yttrium-magnesium-nickel base hydrogen storage material having a general formula of YaAbMgcNixBy, and the material has a mixed-phase structure that regardsthe AB2-type (Y,A,Mg)(Ni,B)2 phase as a main phase, and contains the A2B4-type (Y,A)Mg(Ni,B)4 phase and AB3-type (Y,A,Mg)(Ni,B)3 phase at the same time. The preparation method thereof adopts a methodof induction melting, and anneals the obtained alloy ingot in a vacuum or argon atmosphere. In the AB2-type yttrium-magnesium-nickel base rare earth hydrogen storage material provided by the invention, A side is replaced by the Mg part, which can obviously improve the structural stability of AB2 phase in alloys and reduce hydrogen-induced amorphization and hydrogen-induced disproportionation of alloys; at the same time, Al, Mn and the like with a larger atomic radius are used to replace Ni elements to increase the unit cell volume of alloys, thereby increasing the hydrogen storage capacity ofalloys; and the material has good characteristic of reversible hydrogen absorption and desorption, and the maximum hydrogen storage capacity is greater than 1.6wt.%.

Description

technical field [0001] A rare earth hydrogen storage material and a preparation method thereof, relate to a hydrogen storage material, especially an AB 2 Type yttrium-magnesium-nickel-based rare earth hydrogen storage material and preparation method thereof. Background technique [0002] In recent years, in the process of traditional development and utilization of non-renewable resources such as coal, oil and natural gas, there have been a series of problems such as energy shortage, resource competition and environmental pollution caused by excessive use of energy. It is urgent to establish a new energy system and find new energy sources that are non-polluting, safe, reliable and sustainable. [0003] As a green and efficient energy carrier, hydrogen energy has attracted more and more attention due to its abundant reserves, high calorific value of combustion, non-polluting products, being an energy storage medium, and being widely used. The storage and transportation of hy...

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 Applications(China)
IPC IPC(8): C22C19/03C22C30/00C22C30/02C22C30/06C22C1/02C22F1/10C22F1/02C01B3/00
CPCC22C19/03C22C19/007C22C30/00C22C30/02C22C30/06C22C1/023C22F1/10C22F1/02C01B3/0057Y02E60/32
Inventor 苑慧萍沈浩蒋利军王树茂李志念郝雷叶建华
Owner GRIMAT ENG INST CO LTD
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