Magnesium-base hydrogen storage material having added transition metal oxide

A technology of transition metals and hydrogen storage materials, applied in the field of magnesium-based hydrogen storage materials, can solve the problems that the research level cannot meet people's requirements

Inactive Publication Date: 2003-07-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing research leve

Method used

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Embodiment Construction

[0008] 1. Take pure magnesium powder, accounting for 95% of the total weight; nickel powder accounting for 3%; MnO 2 2%.

[0009] 2. Put the above powder into the QM-1SP planetary ball mill, vacuumize and fill it with 5atm hydrogen with a purity of 99.999%, the rotation speed of the ball mill tank is 20-400rpm, and the milling time depends on the structure of the ball mill. For -1SP and Frisch-P5, the ball milling time is between 30-95 hours.

[0010] 3. Control the rotational speed of the ball mill at 330rpm. Ball milled for 80 hours. Samples were taken every 20 hours for analysis. All manipulations were performed in a glove box filled with argon.

[0011] 4. Take out the powder, the diameter of the powder particles is between 50-100 nanometers. The powder can be used directly to store hydrogen. No activation is required.

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Abstract

A Mg-base hydrogen-bearing material containing oxide of transition metal is prepared from pure Mg, powdered transition metal, and the oxide of transmition metal, such as Cr2O3, MnO2, Fe2O5, V2O5, TiO2, Fe3O4, NiO, MnO, or V2O3. Its advantages are high kinetic and thermodynamic performance of filling and releasing hydrogen, high hydrogen filling speed, and high hydrogen-bearing capacity.

Description

Technical field: [0001] The invention proposes a material, specifically a magnesium-based hydrogen storage material in which a transition metal oxide is added to the magnesium-based hydrogen storage material. Background technique: [0002] Hydrogen storage material is an extremely important functional material, which plays a very important role in the field of secondary energy. It is the basic material for fuel cells, rechargeable batteries. Due to the large thermal effect (62KJ / mol) in the hydrogen absorption and desorption process, it has a wide range of applications in thermal mercury, air conditioning, constant temperature, etc., especially for future electric vehicles, which cannot do without hydrogen storage materials. It is also a material with strategic value. As a component of fuel cells, it will be widely used in submarines, satellites, rockets, and aircraft power systems. The International Energy Agency (IEA) has determined that it will be a new type of hydrogen...

Claims

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Application Information

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IPC IPC(8): C22C1/04C22C23/00
Inventor 王尔德于振兴刘祖岩胡连喜房文斌
Owner HARBIN INST OF TECH
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