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A kind of mg-ti hydrogen storage alloy powder and preparation method thereof

A technology of hydrogen storage alloy powder and alloy powder, which is applied in the direction of electrical components, circuits, battery electrodes, etc., can solve the problems of unstable cycle, poor kinetic performance, and difficult preparation, and achieve chemical properties that are inactive and good storage Hydrogen performance and the effect of improving the safety factor

Active Publication Date: 2017-07-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a Mg-Ti hydrogen storage alloy powder and its preparation aiming at the disadvantages of existing magnesium-based hydrogen storage alloys, such as poor kinetic performance, unstable cycle performance, low safety factor, high cost, and difficult preparation. method

Method used

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  • A kind of mg-ti hydrogen storage alloy powder and preparation method thereof
  • A kind of mg-ti hydrogen storage alloy powder and preparation method thereof
  • A kind of mg-ti hydrogen storage alloy powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The particle size of pure magnesium powder is 100-210nm, and the particle size of pure titanium powder is 50-100nm;

[0045] FeCl 3 The particle size of the powder is 0.8-1.5 μm.

[0046] Multi-walled carbon nanotubes have a diameter of 10-50 nm.

[0047] Powder mixing: according to the ratio of mass ratio pure magnesium powder: pure titanium powder=55:45 (converted into atomic number ratio: 71.3:28.7), weigh the element powder and put it into the ball mill jar, inject alcohol into the ball mill jar, and Make sure the alcohol fills the entire mill jar with no air trapped. Add ZrO at a ball-to-material ratio of 20:1 2 Grinding balls, the ball milling process is set as: the ball milling speed is 800r / min, and the ball milling time is 40h. After ball milling is finished, treat that ball mill jar is cooled, take powder in the glove box that argon gas atmosphere protects, will obtain Mg-Ti alloy powder (the median diameter of powder is about 146nm), put into vacuum oven,...

Embodiment 2

[0050] The particle size of pure magnesium powder is 100-150nm, and the particle size of pure titanium powder is 60-90nm;

[0051] FeCl 3 The particle size of the powder is 0.8-1.0 μm.

[0052] Multi-walled carbon nanotubes have a diameter of 10-15 nm.

[0053] Organic solvent, by mass ratio, absolute ethanol: butane: pentane=100:5:1

[0054] Powder mixing: Weigh the element powder according to the mass ratio of pure magnesium powder: titanium powder=55:45 (converted into atomic number ratio: 71.3:28.7) and put it into the ball mill jar, inject the organic solvent into the ball mill jar, and Make sure that the organic solvent fills the entire mill jar without air entrapment. Add ZrO at a ball-to-material ratio of 20:1 2 Grinding balls, the ball milling process is set as: the ball milling speed is 800r / min, and the ball milling time is 40h. After ball milling is finished, treat that ball mill tank is cooled, take powder in the glove box that argon gas atmosphere protects, ...

Embodiment 3

[0057] The particle size of pure magnesium powder is 160-200nm, and the particle size of pure titanium powder is 60-80nm;

[0058] FeCl 3 The particle size of the powder is 1.0-1.5 μm.

[0059] Multi-walled carbon nanotubes have a diameter of 25-30 nm. In addition, the multi-walled carbon nanotubes are doped with nitrogen element, and the doping amount of nitrogen element is 3.5 at%.

[0060] Organic solvent, dehydrated alcohol by mass ratio: butane: pentane=100:10:2.

[0061] Powder mixing: Weigh the element powder according to the mass ratio of pure magnesium powder: titanium powder = 70:30 (converted atomic ratio 82:18) and put it into the ball mill jar, inject alcohol into the ball mill jar, and ensure that the alcohol fills the entire ball mill tank, no air remains. Add ZrO at a ball-to-material ratio of 15:1 2 Grinding balls, the ball milling process is set as: the ball milling speed is 800r / min, and the ball milling time is 30h. After the ball milling is completed...

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Abstract

The invention relates to an Mg-Ti hydrogen storage alloy powder and a preparation method thereof, belonging to the technical field of new energy material preparation and development. The alloy designed by the invention comprises the following components in percentage by weight: 70-92 percent of Mg-Ti alloy, 5-16 percent of FeCl3 and 1-15 percent of carbon nano tubes; in the Mg-Ti alloy, the content of Mg is 65-85 atomic percent, and the rest is Ti. The preparation method comprises the following steps: adding a magnesium source and a titanium source prepared according to the designed components into a ball milling jar full of an organic solvent for ball milling, then carrying out drying, and thus obtaining Mg-Ti alloy powder; then, uniformly mixing the FeCl3 powder, the carbon nano tubes; and the Mg-Ti alloy powder prepared according to the designed components, and thus obtaining the Mg-Ti hydrogen storage alloy. The organic solvent is selected from one of alcohols and hydrocarbons. The preparation process is simple, and the obtained Mg-Ti hydrogen storage alloy powder has good performance and is convenient for industrial production and application.

Description

technical field [0001] The invention relates to a Mg-Ti hydrogen storage alloy powder and a preparation method thereof, belonging to the technical field of preparation and development of new energy materials. Background technique [0002] Compared with fossil energy, hydrogen energy has the advantages of wide source, clean, high calorific value, and good combustion performance. Therefore, since the 1970s, hydrogen energy conversion and hydrogen economy have become the focus of attention of researchers all over the world. In the development and application of hydrogen energy, the preparation, storage and utilization of hydrogen are the three main research directions. At present, it seems that the storage and transportation of hydrogen is the key to the promotion of hydrogen energy. [0003] To solve the problem of hydrogen storage, in fact, it is to find a reliable and efficient hydrogen storage material. Most metals react with hydrogen to form the corresponding metal hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F9/04C22C23/00C22C30/00H01M4/46H01M4/38
CPCY02E60/10
Inventor 吴宏李开洋刘咏兰小东陈紫瑾
Owner CENT SOUTH UNIV
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