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Trace nickel composite layered magnesium composite material as well as preparation method and application thereof

A composite material and composite layer technology, applied in the field of micro-nickel composite layered magnesium composite material and its preparation, can solve the problems of high cost, little attention to the formation of new phases and interface structure changes, and complexity

Active Publication Date: 2022-04-29
XUZHOU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current technologies are relatively complex and costly, and at the same time, less attention has been paid to the formation of new phases and interface structure changes, as well as the role of these new phases formed by trace doping elements in the catalytic hydrogenation / dehydrogenation process

Method used

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  • Trace nickel composite layered magnesium composite material as well as preparation method and application thereof
  • Trace nickel composite layered magnesium composite material as well as preparation method and application thereof
  • Trace nickel composite layered magnesium composite material as well as preparation method and application thereof

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preparation example Construction

[0033] The present invention also provides the preparation method of the micro-nickel composite layered magnesium composite material according to the technical solution, comprising the following steps:

[0034] Magnesium powder, nickel salt and organic solvent are mixed, and the mixture is obtained after solid-liquid separation;

[0035] The mixture is calcined in a reducing atmosphere to obtain a micro-nickel composite layered magnesium composite material.

[0036] The invention adopts the conventional solid-phase method to prepare the trace nickel composite layered magnesium composite material, and the preparation method is simple and easy to operate.

[0037] In the present invention, magnesium powder, nickel salt and organic solvent are mixed, and the mixture is obtained after solid-liquid separation. In the present invention, the magnesium powder is preferably nano-magnesium, and the particle size is preferably 10-20 nm. In the present invention, the preparation method of...

Embodiment 1

[0047] Preparation of nanomagnesium: synthesis in an argon-filled glove box; first, 2 g of naphthalene, 0.1 g of Li, and 30 mL of tetrahydrofuran were added to a three-neck round-bottomed flask equipped with a mechanical stirrer and a reflux condenser, and the mixed solution was heated at 60 After refluxing at ℃ for 5 hours, lithium metal reacted with naphthalene to form lithium naphthalene, which was dark green; then, 50 mL of MeMgCl solution (concentration of 3.0 mol / L) was dropped into the above mixed solution, and stirred at 55 ℃ for 24 hours, in which Mg ions were reduced to Metal Mg core, and further aggregated into nanoparticles by Li-naphthalene in solution; after centrifugation, washing with THF, and drying under argon atmosphere to obtain magnesium powder; the oxygen and moisture content of the magnesium powder are maintained below 1ppm.

[0048] Preparation of Ni@Mg nanomaterials: Add 1 g of magnesium powder and 0.26 g of nickel acetylacetonate to the bottom of the ...

Embodiment 2

[0050] It is basically the same as Example 1, except that the mass of nickel acetylacetonate is adjusted from "0.26g" to "0.22g" during the preparation of Ni@Mg nanomaterials.

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Abstract

The invention provides a trace nickel composite layered magnesium composite material as well as a preparation method and application thereof, and relates to the technical field of composite materials. The invention provides a trace nickel composite layered magnesium composite material. The trace nickel composite layered magnesium composite material comprises a nanometer layered magnesium matrix and nanometer nickel distributed on the surface and between layers of the nanometer layered magnesium matrix. The trace nickel composite layered magnesium composite material provided by the invention has relatively high hydrogen storage capacity, high hydrogen absorption and desorption efficiency and good cycle stability.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a micro-nickel composite layered magnesium composite material and a preparation method and application thereof. Background technique [0002] Hydrogen is considered one of the best options for green energy due to its cleanliness and high energy density. One of the most important obstacles hindering the development of hydrogen energy is the lack of safe, efficient and economical hydrogen storage materials. Currently, the use of magnesium (Mg) to store hydrogen has a huge market prospect in the development of hydrogen energy vehicles. The outstanding advantages of magnesium are its high theoretical hydrogen storage density (7.6 wt%), abundant reserves, low cost, low density and low toxicity. However, magnesium suffers from two major disadvantages in terms of hydrogen absorption and desorption efficiency and cycling stability, namely, high desorption temperature and sl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/05C01B3/00B82Y40/00B82Y30/00
CPCC22C23/00C22C1/05C01B3/0042C01B3/0078B82Y30/00B82Y40/00C22C2202/04Y02E60/32C01P2004/64
Inventor 梁慧朱骏翔沈鑫慧耿宝章曹本亮邓嘉顺朱思航
Owner XUZHOU UNIV OF TECH
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