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A kind of rare earth-containing amorphous/nanocrystalline aluminum anode composite material, preparation method and aluminum-air battery

A technology of aluminum-air batteries and nanocrystalline aluminum, which is applied in the direction of fuel cell half-cells and primary battery-type half-cells, battery electrodes, circuits, etc. Air battery commercial application and other issues

Inactive Publication Date: 2016-05-04
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, aluminum-air batteries have not been commercialized like zinc-air batteries, mainly because some key problems of aluminum alloys as anodes have not been resolved.
For example, aluminum anodes can generate large currents in alkaline electrolytes, but the self-corrosion of aluminum anodes is severe, resulting in extremely low anode utilization
High-power aluminum-air batteries usually use alkaline electrolytes, and the self-corrosion problem of aluminum anodes in alkaline electrolytes has become a bottleneck hindering the development and application of aluminum-air batteries

Method used

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  • A kind of rare earth-containing amorphous/nanocrystalline aluminum anode composite material, preparation method and aluminum-air battery
  • A kind of rare earth-containing amorphous/nanocrystalline aluminum anode composite material, preparation method and aluminum-air battery

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Embodiment 1

[0029] In this embodiment, the rare earth-containing amorphous / nanocrystalline aluminum anode composite material is composed of the following components in percentage by weight: Mg0.5%, Sn2%, Ga1%, La0.5%, and the balance is Al, Al Purity≥99.8%.

[0030] The preparation method of the rare earth-containing amorphous / nanocrystalline aluminum anode composite material in this embodiment comprises the following steps:

[0031] (1) Under the protection of argon, when the temperature is 700 ° C, the aluminum ingots are completely melted in the crucible of the ZGJL0.01-40-4 induction melting furnace, and then magnesium ingots, lanthanum-containing aluminum rare earth master alloy (Al-10% La ), tin grains and corn grains, rotate the container while heating to mix the molten metal evenly, continue heating to 760°C, keep warm for 6 minutes, and pour into block-shaped flat ingots;

[0032] (2) After crushing the cast alloy ingot, put it into a quartz tube with a flat opening at the botto...

Embodiment 2

[0036] In this embodiment, the rare earth-containing amorphous / nanocrystalline aluminum anode composite material is composed of the following components in percentage by weight: Mg5%, Sn0.5%, Ga0.02%, La4%, and the balance is Al, Al Purity≥99.8%.

[0037] The preparation method of the rare earth-containing amorphous / nanocrystalline aluminum anode composite material in this embodiment comprises the following steps:

[0038] (1) Under the protection of argon, when the temperature is 710 ° C, the aluminum ingots are completely melted in the crucible of the ZGJL0.01-40-4 induction melting furnace, and then magnesium ingots, lanthanum-containing aluminum rare earth master alloy (Al-10% La ), tin grains and corn grains, rotate the container while heating to mix the molten metal evenly, continue heating to 750°C, keep warm for 10 minutes, and pour into block-shaped flat ingots;

[0039] (2) After crushing the cast alloy ingot, put it into a quartz tube with a flat opening at the bot...

Embodiment 3

[0043] In this embodiment, the rare earth-containing amorphous / nanocrystalline aluminum anode composite material is composed of the following components in weight percentage: Mg1%, Sn1%, Ga2%, La5%, and the balance is Al, and the purity of Al is ≥99.8%. .

[0044] The preparation method of the rare earth-containing amorphous / nanocrystalline aluminum anode composite material in this embodiment comprises the following steps:

[0045] (1) Under the protection of argon, when the temperature is 670 ° C, all the aluminum ingots are melted in the crucible of the ZGJL0.01-40-4 induction melting furnace, and then magnesium ingots, lanthanum-containing aluminum rare earth master alloy (Al-10% La ), tin grains and corn grains, rotate the container while heating to mix the molten metal evenly, continue heating to 770 ° C, keep warm for 5 minutes, and pour into block-shaped flat ingots;

[0046] (2) After crushing the cast alloy ingot, put it into a quartz tube with a flat opening at the ...

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Abstract

The present invention discloses a rare earth-containing amorphous / nanocrystal aluminum anode composite material, a preparation method and an aluminum air battery, and belongs to the techncial field of air batteries. The aluminum anode composite material comprises, by weight, 0.5-5% of Mg, 0.02-2% of Sn, 0.02-2% of Ga, 0.1-5% of La or Ce, and the balance of Al. According to the present invention, aluminum with the purity of more than or equal to 99.8% is adopted as the base, the trae amounts of Mg, Sn, Ga and the rare earth element La or Ce are added so as to reduce the self-corrosion rate and improve the electrochemical property and the surface dissolution uniformity of the alloy, especially the trae amount of the rare earth element is added to the aluminum alloy, and the addition of the rare earth element to the aluminum has effects of oxygen removing, hydrogen removing, desulfuration, melting rate accelerating, metal burning loss reducing, change of species distribution and refinement modification of iron and other harmful impurities, and the like so as to slow down the self-corrosion of the aluminum alloy, such that the anode utilization rate is improved.

Description

technical field [0001] The invention relates to a rare earth-containing amorphous / nanocrystalline aluminum anode composite material, a preparation method of the composite material, and an aluminum-air battery, belonging to the technical field of air batteries. Background technique [0002] Energy is an important material basis for the development of the national economy and the improvement of people's living standards. In view of the current tense situation of fossil energy, countries all over the world are stepping up to explore new sustainable energy utilization technologies. The metal-air battery has rich raw materials, high cost performance, stable performance, and no pollution. Therefore, it is called "green energy for the 21st century". Metal-air batteries use metal aluminum (or zinc) as the anode, oxygen in the air as the cathode active material, alkaline or neutral aqueous solution as the electrolyte, and oxygen in the air reaches the gas-solid-liquid through the gas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C21/06H01M4/38H01M4/46H01M12/06
CPCY02E60/10
Inventor 马景灵文九巴王喜然王悔改朱宏喜申晓妮
Owner HENAN UNIV OF SCI & TECH
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