Metal-boron-nitrogen-hydrogen hydrogen storage material and preparation method thereof

A hydrogen storage material and hydrogen material technology, applied in the field of hydrogen storage technology and new material synthesis, can solve the problems of single type of synthetic material, complex process, difficult to control, etc., and achieve the effect of simple preparation process, simple process and easy operation

Inactive Publication Date: 2012-07-11
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF2 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a metal (M)-boron (B)-nitrogen (N)-hydrogen (H) hydrogen storage material and its preparation method, which solves the pro

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
  • Metal-boron-nitrogen-hydrogen hydrogen storage material and preparation method thereof
  • Metal-boron-nitrogen-hydrogen hydrogen storage material and preparation method thereof
  • Metal-boron-nitrogen-hydrogen hydrogen storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] with 2NH 3 BH 3 +MgH 2 As the starting material, Mg(NH 2 BH 3 ) 2 1.7NH 3 Research on hydrogen storage materials and hydrogen release performance.

[0031] The raw material used is: NH 3 BH 3 (purity 97wt.%), MgH 2 (purity 98wt.%), ammonia (volume purity 99.99%). In an argon atmosphere glove box, a 2:1 molar ratio of NH 3 BH 3 / MgH 2 Put the mixture and stainless steel balls into a stainless steel ball mill tank, cover and seal; then vacuumize the ball mill tank, fill it with ammonia gas for several times, fill it with 2.14bar ammonia gas, and press the molar ratio of NH 3 BH 3 / MgH 2 / NH 3 2:1:1.7; finally, the ball mill jar was placed on a Fritsch 7 planetary ball mill, and ground at a room temperature of 25° C. for 2 hours, with a ball-to-material mass ratio of 40:1.

[0032] X-ray testing equipment and conditions: Rigaku D / max 2500, Cu Ka rays. figure 1 The X-ray images of the samples after ball milling are given. NH after ball milling 3 BH 3 and...

Embodiment 2

[0037] with 2NH 3 BH 3 +MgH 2 As the starting material, Mg(NH 2 BH 3 ) 2 1.4NH 3 Hydrogen storage material.

[0038] The raw material used is: NH 3 BH 3 (purity 97wt.%), MgH 2 (purity 98wt.%), ammonia (volume purity 99.99%). Fill the ball mill tank with 1.4 bar of ammonia, according to molar ratio NH 3 BH 3 / MgH 2 / NH 3 The ratio is 2:1:1.5, and the other sample preparation conditions are the same as in Example 1. Figure 5 The X-ray diffraction spectrum of the sample after ball milling is given, and its molecular formula is Mg(NH 2 BH 3 ) 2 1.4NH 3 . and figure 1 The comparison of the results shows that as the amount of ammonia gas in the ball mill tank is reduced, the structure and composition of the generated compound are changed, which shows that the formation of metal ammonia borane can be modulated by changing the amount of reactive ammonia gas The amount of ammonia complexed by the compound can achieve the purpose of modulating the composition and pe...

Embodiment 3

[0040] with 2NH 3 BH 3 +CaH 2 As starting material, Ca(NH 2 BH 3 ) 2 2NH 3 Research on hydrogen storage materials and hydrogen release performance.

[0041] The raw material used is: NH 3 BH 3 (purity 97wt.%), CaH 2 (purity 99.99wt.%), ammonia (volume purity 99.99%). Fill the ball mill tank with 2.2 bar of ammonia, by molar ratio of NH 3 BH 3 / CaH 2 / NH 3 The ratio is 2:1:2.1, and the other sample preparation conditions are the same as in Example 1. Image 6 The X-ray diffraction spectrum of the sample after ball milling is given, and its molecular formula is Ca(NH 2 BH 3 ) 2 2NH 3 . This result is consistent with Chen Ping et al. using the amino salt Ca(NH 2 ) 2 Ca(NH 2 BH 3 ) 2 2NH 3 This shows that the preparation method provided by the present invention has wide applicability, not only can synthesize existing compounds, but also can synthesize metal ammonia borane compounds of many new complex ammonia that cannot be synthesized by other methods, Ex...

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 relates to the field of hydrogen storage technique and new material synthesis, particularly discloses a metal (M)-boron(B)-nitrogen(N) hydrogen storage material and a preparation method thereof, for solving the problems complicated process, high cost, simple types of synthetic materials, difficulties in regulating and controlling the amount of ammonia complexes in the prior art. The preparation method comprises the following steps: in the presence of inert atmosphere, putting powdery ammonia borane (NH3BH3) with metal (M) or metal hydride (MHx) in a ball milling pot as a reaction vessel according to the mole ratio, adding a cover for sealing, then carrying out vacuum pumping and ammonia gas inflationon for replacement on the ball milling pot for several times, and finally carrying out ball milling under the proper amount of responsive atmosphere of ammonia gas to obtain the metal (M)-boron(B)-nitrogen(N) hydrogen storage material of M(NH2BH3)x.yNH3, wherein x is no less than 1 and no larger than 6, y is no less than 1 and no larger than 10, and the mole ratio of NH3BH3 to M to MHx is 1:1-6:1. The preparation method has the advantages of simple process, low cost, and easy operation, and is suitable for large scale preparation, and the material components can be controlled by controlling the amount of ammonia gas filled in the ball milling pot.

Description

Technical field [0001] The invention relates to the field of hydrogen storage technology and new material synthesis, in particular to a metal (M)-boron (B)-nitrogen (N)-hydrogen (H) hydrogen storage material and a preparation method thereof. Background technique [0002] Hydrogen is recognized as the most ideal clean energy carrier, with significant advantages such as high gravimetric energy storage density, wide range of sources, recyclable utilization and no negative environmental effects in the process of energy utilization. At present, promoting the application of hydrogen energy has become a prominent focus of the energy strategies of many developed countries. The large-scale commercial application of hydrogen energy involves technical links such as hydrogen production, hydrogen storage / transportation, and hydrogen use. Among them, the hydrogen storage / transportation link is recognized for its comprehensive performance indicators in terms of hydrogen storage density, op...

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): C01B6/21C01B6/23
Inventor 王平康向东
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap