A kind of preparation method of aluminum-air battery anode material

A technology for aluminum-air batteries and anode materials, applied in battery electrodes, circuits, manufacturing tools, etc., can solve the problems of low utilization rate of anode materials, segregation of Sn elements, etc., to improve electrochemical activity, improve corrosion resistance, and improve utilization rate effect

Active Publication Date: 2021-12-03
CHINALCO SOUTHEAST MATERIALS (FUJIAN) TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the problems of serious segregation of Sn element and low utilization rate of anode material when the anode material of Al-Mg-Sn series aluminum-air battery is casted, and provides a method by optimizing conditions such as alloy design, alloy element addition method and heat treatment method. Efficient preparation method of aluminum-air battery anode material, which improves the utilization rate of aluminum-air battery anode material

Method used

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  • A kind of preparation method of aluminum-air battery anode material
  • A kind of preparation method of aluminum-air battery anode material

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Effect test

Embodiment 1

[0021] A method for preparing an aluminum-air battery anode material, comprising the following process steps:

[0022] (1) The chemical composition of the aluminum-air battery anode blank is: Mg: 0.40%, Ga: 0.020%, Sn: 0.04%, Bi: 0.02%, Zn: 0.5%, and the rest is Al. Mg, Ga, Bi, Zn and Al are added in the form of pure substances, Sn is added in the form of Al-50Sn master alloy, the burning loss of Mg is calculated as 5%, the purity of the above metals is required to be above 99.99%, and the impurity content is less than 0.01%;

[0023] (2) Put the aluminum block into the graphite crucible and heat it with an intermediate frequency furnace. When the temperature rises to 650°C, add Al-Sn, Ga, Bi and Zn metals, and stir slowly evenly. When the temperature rises to 710°C, add Mg, argon inert gas is slowly introduced into the melt, the slag is removed at 710°C for 5 minutes, cast in a water-cooled copper mold, and naturally cooled to room temperature. The materials used for stirring...

Embodiment 2

[0029] A method for preparing an aluminum-air battery anode material, comprising the following process steps:

[0030] (1) The chemical composition of the aluminum-air battery anode blank is: Mg: 0.45%, Ga: 0.030%, Sn: 0.04%, Bi: 0.05%, Zn: 0.8%, and the rest is Al. Mg, Ga, Bi, Zn and Al are added in the form of pure substances, Sn is added in the form of Al-50Sn master alloy, the burning loss of Mg is calculated as 5%, the purity of the above metals is required to be above 99.99%, and the impurity content is less than 0.01%;

[0031] (2) Put the aluminum block into the graphite crucible and heat it with an intermediate frequency furnace. When the temperature rises to 650°C, add Al-Sn, Ga, Bi and Zn metals, and stir slowly evenly. When the temperature rises to 710°C, add Mg, slowly inject argon inert gas into the melt, heat at 720°C for 5 minutes to remove slag, cast in a water-cooled copper mold, and naturally cool to room temperature. The materials used for stirring and slag...

Embodiment 3

[0037] A method for preparing an aluminum-air battery anode material, comprising the following process steps:

[0038] (1) The chemical composition of the aluminum-air battery anode blank is: Mg: 0.8%, Ga: 0.01%, Sn: 0.03%, Bi: 0.1%, Zn: 0.1%, and the rest is Al. Mg, Ga, Bi, Zn and Al are added in the form of pure substances, Sn is added in the form of Al-50Sn master alloy, the burning loss of Mg is calculated as 5%, the purity of the above metals is required to be above 99.99%, and the impurity content is less than 0.01%;

[0039] (2) Put the aluminum block into the graphite crucible and heat it with an intermediate frequency furnace. When the temperature rises to 650°C, add Al-Sn, Ga, Bi and Zn metals, and stir slowly evenly. When the temperature rises to 710°C, add Mg, argon inert gas is slowly introduced into the melt, the slag is removed at 710°C for 5 minutes, cast in a water-cooled copper mold, and naturally cooled to room temperature. The materials used for stirring and ...

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Abstract

The invention belongs to the technical field of metal materials, and in particular relates to a preparation method of an aluminum-air battery anode material. Select the chemical composition of the alloy: the alloy composition is calculated according to the mass percentage, Mg: 0.25~1.50%, Ga: 0.01~0.60%, Sn: 0.01~1.10%, Bi: 0.01~0.50%, Zn: 0.02~2.00%, and the rest are Al; Among them, by optimizing the alloy design, the addition method of alloy elements and the heat treatment method, a high-efficiency preparation method of aluminum-air battery anode material is provided, which improves the utilization rate of the anode material from the casting process and improves the electrochemical performance of the anode material. more stable.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a preparation method of an aluminum-air battery anode material. Background technique [0002] As a new type of energy battery, aluminum-air batteries have the advantages of high specific energy, high specific power, low cost, convenient cleaning and easy replacement of anode plates. Since the 1980s, many countries have invested in research and development and successfully applied them in transportation. , seaside emergency equipment and resident production and other fields. Among them, improving the electrochemical activity of the anode material in the electrolyte and reducing the self-corrosion rate in the medium are important indicators for improving the overall performance of the aluminum alloy anode. In recent years, researchers have developed Al-Sn-Gn-In, Al-Zn-Sn, Al-Ga-Sn-Mg and other multi-alloy anode materials have greatly improved the surface activi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C21/06C22C21/10C22F1/047C22F1/053C21D9/00H01M4/46
CPCC21D9/0081C22C1/026C22C1/03C22C21/06C22C21/10C22F1/047C22F1/053H01M4/463Y02E60/10
Inventor 刘旺付海朋何立子黄瑞银吴建新李谢华
Owner CHINALCO SOUTHEAST MATERIALS (FUJIAN) TECH CO LTD
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