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Aluminum alloy anode material, and casting method and application thereof

An anode material, aluminum alloy technology, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of low electrochemical activity, high hydrogen evolution overpotential, low anode utilization rate, etc. Good chemical properties and reasonable ratio

Active Publication Date: 2017-07-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problems of low anode utilization rate and low electrochemical activity in existing aluminum-air batteries, the present invention provides an aluminum alloy anode material suitable for aluminum-air batteries and its casting method and application. The aluminum alloy anode The material has a lower overpotential and a higher hydrogen evolution overpotential, enabling the electrode to achieve high electrochemical activity and anode utilization during battery operation

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  • Aluminum alloy anode material, and casting method and application thereof

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Embodiment 1

[0030] In this embodiment, the aluminum alloy anode material is cast from Pb, Sn, Ga, Ti, and Al, and the specific casting steps are as follows:

[0031] 1. Refined alloy:

[0032] (1) According to the mass percentage of each component in Example 1 in Table 1, do the ingredients;

[0033] (2) Put a pure aluminum block with a purity of 99.99% into a pit furnace in multiple times and heat it to 750°C for melting;

[0034] (3) Afterwards, the four metal elements of Pb, Sn, Ga, and Ti that have been previously prepared are also added to the pit furnace;

[0035] (4) After all the components are completely melted, use a graphite rod to stir the molten aluminum alloy every 5 minutes and repeat it several times to make the metal elements in a uniform state;

[0036] (5) Finally, add hexachloroethane twice to remove the waste residue in the molten aluminum. The amount of hexachloroethane added is 8% of the total mass of the aluminum alloy.

[0037] 2. Casting:

[0038] (1) Coat a layer of release ...

Embodiment 2

[0042] In this embodiment, the aluminum alloy suitable for the aluminum-air battery is cast from Pb, Sn, Ga, Ti, and Al. The specific casting steps are as follows:

[0043] 1. Refined alloy:

[0044] (1) Make ingredients according to the mass percentage of each component in Example 2 in Table 1;

[0045] (2) Put a pure aluminum block with a purity of 99.99% into a pit furnace in multiple times and heat it to 700°C for melting;

[0046] (3) Afterwards, the four metal elements of Pb, Sn, Ga, and Ti that have been previously prepared are also added to the pit furnace;

[0047] (4) After all the components are completely melted, use a graphite rod to stir the molten aluminum alloy every 5 minutes and repeat it several times to make the metal elements in a uniform state;

[0048] (5) Finally, add hexachloroethane twice to remove the waste residue in the molten aluminum. The amount of hexachloroethane added is 6% of the total mass of the aluminum alloy.

[0049] 2. Casting:

[0050] (1) Coat a l...

Embodiment 3

[0054] In this embodiment, the aluminum alloy suitable for the aluminum-air battery is cast from Pb, Sn, Ga, Ti, and Al. The specific casting steps are as follows:

[0055] 1. Refined alloy:

[0056] (1) Make ingredients according to the mass percentage of each component in Example 3 in Table 1;

[0057] (2) Put a pure aluminum block with a purity of 99.99% into a pit furnace in multiple times and heat it to 700°C for melting;

[0058] (3) Afterwards, the four metal elements of Pb, Sn, Ga, and Ti prepared previously are also added to the pit furnace;

[0059] (4) After all the components are melted, use a graphite rod to stir the molten aluminum alloy every 5 minutes and repeat it many times to make the metal elements in a uniform state;

[0060] (5) Finally, add hexachloroethane twice to remove the waste residue in the molten aluminum. The amount of hexachloroethane added is 8% of the total mass of the aluminum alloy.

[0061] 2. Casting:

[0062] (1) Coat a layer of release agent on the ...

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Abstract

The invention discloses an aluminum alloy anode material, and a casting method and an application thereof. The aluminum alloy anode material is prepared through casting Pb, Sn, Ga, Ti and Al. The casting method concretely comprises the following steps: 1, refining alloy: (1) placing pure aluminum blocks in a shaft furnace in batches, and heating for melting the pure aluminum blocks; (2) adding trace metal elements into the high temperature shaft furnace after all the aluminum blocks are completely molten; (3) stirring all above components by a graphite rod after all the components are completely molten; and (4) adding hexachloroethane, and removing the waste residues in the molten aluminum; and 2, carrying out casting molding: (1) coating the internal surface of a die with a layer of a release agent, and carrying out heating and heat insulation; and (2) pouring the molten aluminum alloy into the die, and casting the aluminum alloy to form aluminum ingots. The aluminum alloy anode material has low overpotential and high hydrogen evolution overpotential, so an electrode made of the material has high electrochemical activity and high anode utilization efficiency during the running of a battery.

Description

Technical field [0001] The invention belongs to the technical field of metallurgy and material processing, and relates to a new type of five-element aluminum alloy and its casting method and application. Background technique [0002] With the shortage of non-renewable energy sources such as petroleum and the severe environmental problems in our country, people have begun to continuously develop new and green renewable energy sources. From the first-generation lead-acid batteries to lithium batteries to the highly anticipated metal-air batteries, the development of battery power systems has attracted more and more attention. As a new generation of green storage batteries, metal-air batteries have many advantages such as low manufacturing costs, high specific energy, environmental protection and non-toxicity. [0003] At present, the most researched metal-air batteries include zinc-air batteries, aluminum-air batteries, lithium-air batteries, etc. Among them, only zinc-air batteries...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/06B22D21/04H01M4/46
CPCB22D21/007C22C1/06C22C21/00H01M4/463Y02E60/10
Inventor 尹鸽平陈兴左朋建霍华高云智程新群杜春雨
Owner HARBIN INST OF TECH
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