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Aluminum alloy anode material for aluminum-air battery and preparation method

An anode material, air battery technology, applied in battery electrodes, negative electrodes, active material electrodes, etc., to achieve the effects of high energy density, high anode efficiency, and smooth morphology

Pending Publication Date: 2021-06-11
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the problems existing in the existing aluminum alloy anode materials, and propose an aluminum alloy anode material for aluminum-air batteries with good discharge activity and high anode efficiency and its preparation method

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  • Aluminum alloy anode material for aluminum-air battery and preparation method
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Examples

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preparation example Construction

[0025] The present invention also provides a method for preparing the above-mentioned aluminum alloy anode material. The aluminum alloy anode material is obtained through smelting, degassing, slag removal, casting, homogenization, rolling, heat treatment and post-treatment processes, specifically , which includes the following steps:

[0026] Melting: Dosing according to the alloy composition, adding industrial pure aluminum to the medium frequency induction furnace, heating to 740-780°C to melt, then controlling the temperature at 720-740°C, adding aluminum scandium-zirconium master alloy and aluminum manganese to the melt For intermediate alloys, after 30-60 minutes of heat preservation, electromagnetically stir the melt for 10-30 minutes; then control the temperature of the above-mentioned melt at 700-720°C, and add low-melting point alloy elements (Mg, Sn, Ga) in sequence, low-melting point alloys The elements are pressed into the melt with graphite rods in order of meltin...

Embodiment 1

[0035] This embodiment provides an aluminum alloy anode material for an aluminum-air battery. The composition is: 0.5% Mg, 0.15% Sn, 0.2% Mn, 0.2% Sc, 0.1% Zr, and the balance is Al.

[0036] Its specific preparation method:

[0037] (1) Dosing according to the alloy composition, add industrial pure aluminum to the medium frequency induction furnace, heat to 760°C to melt, then control the temperature at 740°C, add Al2ScZr master alloy and Al10Mn master alloy to the melt, keep it for 40min , electromagnetically stir the melt for 15 minutes; then control the temperature of the above melt at 720°C, add pure industrial pure magnesium and industrial pure tin in turn, keep warm for 10 minutes, and then electromagnetically stir the melt for 10 minutes;

[0038] (2) At 740°C, the above-mentioned melt is introduced into a static furnace, and a mixture of argon and hexachloroethane powder is introduced into the static furnace (the concentration of hexachloroethane is 40 to 60 g / m 3 ) ...

Embodiment 2

[0045] The difference between this example and Example 1 lies in the composition of the aluminum alloy anode material. This example provides an aluminum alloy anode material for an aluminum-air battery. The composition is: 0.1% Mg, 0.005% Sn, 0.05% Mn, 0.05% Sc, 0.025% Zr, the balance is Al.

[0046] The preparation method of this embodiment is the same as that of Example 1.

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Abstract

The invention provides an aluminum alloy anode material for an aluminum-air battery and a preparation method, and the aluminum alloy anode material comprises the following components in percentage by mass: 0.1%-3.6% of Mg; 0.005% to 2.0% of Sn; 0.05% to 0.50% of Mn; 0.05% to 1.0% of Sc; 0.025% to 0.50% of Zr; 0 to 2.0% Ga; and the balance of Al. The aluminum alloy anode material is prepared through the procedures of smelting, degassing, slagging-off, casting, homogenizing, rolling and heat treatment, the aluminum alloy anode material adopts industrial pure aluminum as a raw material, Mg and Sn alloy elements capable of improving the corrosion resistance and activity of the anode material are added, and a Mn alloy element capable of eliminating the adverse effect of impurity Fe is added; in addition, Sc and Zr alloy elements capable of refining grains and improving the alloy anode structure uniformity are further added, and the aluminum alloy anode material has the advantages of being good in discharge activity, high in anode utilization efficiency, long in service life, good in discharge process stability, easy to prepare and the like.

Description

technical field [0001] The invention relates to the field of anode materials for metal air, in particular to an aluminum alloy anode material for an aluminum-air battery and a preparation method thereof. Background technique [0002] Nowadays, due to the rapid depletion of fossil energy sources and growing environmental concerns, efficient and sustainable energy storage devices are receiving more and more attention. At present, lithium-ion batteries are the most advanced and mature energy storage devices, and have the advantages of long life and high energy density. However, insufficient lithium reserves and inherent safety risks limit its use in large-scale energy storage. Compared with traditional batteries, disposable and mechanically rechargeable metal-air batteries using metals such as Al, Zn, and Mg as anode materials have the advantages of low cost, environmental friendliness, high recyclability, safety, and ultra-high energy density. . [0003] Among these metal-a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/46H01M4/62H01M12/06B22D25/04C22C1/02C22C21/06C22F1/047
CPCH01M4/463H01M4/628H01M12/06C22C21/06C22C1/026B22D25/04C22F1/047H01M2004/027Y02E60/10
Inventor 张海涛吴子彬杨东辉赵浩郑玉倩邹晶李越朗秦克班春燕崔建忠
Owner NORTHEASTERN UNIV
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