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Method for manufacturing aluminum alloy anode metal plate of aluminum-air battery

A technology of aluminum-air battery and aluminum alloy, which is applied in the direction of fuel cell half-cell and primary battery half-cell, metal material coating process, coating, etc., which can solve the problem of long preparation cycle and low specific contact area of ​​electrolyte , high cost of metal electrode production and other issues, to achieve the effect of low cost, low price, and reduced production cost

Inactive Publication Date: 2015-11-18
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high production cost of metal electrodes of aluminum-air battery, low specific contact area of ​​metal electrode surface and electrolyte, and long preparation cycle, the invention provides an aluminum alloy with chips obtained from industrial aluminum processing as raw material and large specific contact area with electrolyte. Preparation method of alloy anode metal plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Preparation method of aluminum alloy anode metal plate for aluminum-air battery

[0033] Possession includes the following steps:

[0034] 1) Soak the aluminum chips in 20% sodium bicarbonate solution for 30 minutes to remove the oil stains, then use a high-pressure water gun to clean the aluminum chips and impurities, and dry them in a dryer.

[0035] 2) Put the aluminum chips into a ball mill with alloy steel balls with a diameter of 30 mm and mill them for 2 hours to obtain uniform aluminum chips with an average diameter of 4 mm.

[0036] 3) Mix 149.865g of aluminum scrap particles with 0.135g of zinc powder. The mass fraction of zinc powder in the mixture is 0.09%. Mix and stir in the mixer for 15 minutes to make it evenly stirred.

[0037] 4) Put the zinc-aluminum scrap mixture particles into the 100mm×100mm×6mm square section mold cavity of the press, and press it under 170MPa to a thickness of 6mm and a density of 2500~2600kg / m 3 zinc-aluminum chipbo...

Embodiment 2

[0041] Example 2: Preparation method of aluminum alloy anode metal plate for aluminum-air battery

[0042] Possession includes the following steps:

[0043] 1) Wash the aluminum chips with 30% sodium bicarbonate solution for 3 times to remove oil stains, then spray water with a high-pressure water gun to clean the aluminum chips impurities, and let it stand in a dry room for 2 days to dry.

[0044] 2) Put the aluminum chips into a ball mill with alloy steel balls with a diameter of 25 mm and mill them for 2.5 hours to obtain uniform aluminum chips particles with an average diameter of 3 mm.

[0045] 3) Mix 149.85g of aluminum scrap particles with 0.15g of zinc powder. The mass fraction of zinc powder in the mixture is 0.1%. Mix and stir in a mixer for 15 minutes to make it evenly stirred.

[0046] 4) Put the zinc-aluminum scrap mixture particles into the 100mm×120mm×5.5mm rectangular section mold cavity of the press, and press it under 180MPa to a thickness of 5.5mm and a den...

Embodiment 3

[0051] Example 3: Preparation method of aluminum alloy anode metal plate for aluminum-air battery

[0052] Possession includes the following steps:

[0053] 1) Soak the aluminum chips with 15% sodium bicarbonate solution for 1 hour to remove oil stains, then spray water with a high-pressure water gun to clean the aluminum chips impurities, stand in a dry room for 2 days, and dry.

[0054] 2) Put aluminum chips into a ball mill with alloy steel balls and mill for 3 hours to obtain relatively uniform aluminum chips particles with an average diameter of 2 mm.

[0055] 3) Wash the aluminum chip board once with 25% dilute hydrochloric acid to reduce the thickness of the oxide film on the surface of the aluminum chip on the aluminum chip board.

[0056] 4) Mix 149.835g of aluminum scrap particles with 0.165g of zinc powder. The mass fraction of zinc powder in the mixture is 0.11%. Mix and stir in a mixer for 15 minutes.

[0057] 5) Put the zinc-aluminum scrap mixture particles int...

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Abstract

The invention discloses a method for manufacturing an aluminum alloy anode metal plate of an aluminum-air battery, and belongs to the field of aluminum-air battery electrodes. Aluminum skimmings produced due to industrial aluminum machining are adopted to serve as raw materials, and the aluminum alloy anode metal plate is obtained in the steps that water drainage and oil removal are carried out, the skimmings are smashed, mixed with zinc powder, compacted and formed, and thermal treatment and thermal spraying are carried out. The aluminum skimmings produced due to metal cutting serve as the raw materials, so that the problem of waste aluminum recycle is solved, the process that the aluminum skimmings are electrolyzed again is omitted, and manufacturing cost of metal electrodes is reduced. The surface of an aluminum skimmings plate formed by pressing the aluminum skimmings is provide with holes, the specific contact area of electrolyte is large, and electrode discharge reaction is enhanced. Gallium, tin and bismuth are added and little in required amount, and electrode activity can be effectively improved.

Description

technical field [0001] The invention relates to a method for preparing an aluminum-air battery aluminum alloy anode metal plate, belonging to the field of aluminum-air battery electrodes. Background technique [0002] Aluminum metal electrodes are an important part of aluminum-air batteries. Existing aluminum-air batteries mainly use pure aluminum or aluminum alloy as the metal electrode negative electrode. Whether it is pure aluminum or aluminum alloy, it is necessary to use high-purity aluminum metal. Industrial aluminum production mainly adopts the method of electrolytic alumina. The cost of electrolysis of one ton of aluminum is more than 16,000 yuan, which is high cost. This is one aspect that limits the commercialization of aluminum-air batteries. [0003] Pure aluminum is easy to form a dense oxide film when it contacts with oxygen. When it is used as an electrode, it needs to consume the oxide film on the surface first, reduce the activity of the electrode, and pas...

Claims

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Application Information

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IPC IPC(8): B22F7/04C23C4/12C23C4/06H01M12/06
Inventor 郭文亮丁艳红杨文通聂勇徐灵岩田富强孙瑞光郭政韩念琛张杰李月敏宁磊
Owner TAIYUAN UNIV OF TECH
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