Aluminum air battery anode material, preparing method thereof and aluminum air battery

A technology for aluminum-air batteries and anode materials, applied in battery electrodes, fuel cell half-cells, primary battery-type half-cells, negative electrodes, etc., can solve environmental pollution, large pieces of aluminum are difficult to clean, and aluminum anode plates are prone to occurrence Breakage and other problems, achieve uniform distribution, help to stabilize output, and solve the effect of component segregation

Active Publication Date: 2019-11-22
宁波烯铝新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most domestic and foreign experts suppress the hydrogen evolution reaction by adjusting the alloy composition or adding Hg, Pt and other elements. However, in the actual application process of the stack, the middle or upper part of the aluminum anode plate is prone to fracture, which not only affects the utilization rate of the aluminum anode, but also causes residual The large pieces of aluminum are difficult to clean, which seriously affects the efficiency of the battery, and the addition of Hg and Pt elements will cause serious pollution to the environment

Method used

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  • Aluminum air battery anode material, preparing method thereof and aluminum air battery
  • Aluminum air battery anode material, preparing method thereof and aluminum air battery
  • Aluminum air battery anode material, preparing method thereof and aluminum air battery

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preparation example Construction

[0036] In the second aspect, the embodiment of the present application proposes a method for preparing the above-mentioned anode material for an aluminum-air battery, including:

[0037] The batching method adopted in the embodiment of the present application is: Mg, Ga, Bi, In and Al are added in the form of pure substances, Sn is added in the form of Al-50Sn master alloy, Ti is added in the form of Al-10Ti master alloy, and the burning loss of Mg is as follows: 5% calculation, the above metal purity requirement is above 99.95%. In this application, Sn is added in the form of Al-50Sn master alloy, which effectively avoids the specific gravity segregation in the casting process, and the uniformity of composition also plays a vital role in the stability of the discharge current.

[0038] Casting. Put the aluminum block into the graphite crucible and heat it with an intermediate frequency furnace. When the temperature rises to 690°C-710°C, add the Ai-10Ti alloy and stir slowly ev...

Embodiment 1

[0048] This embodiment provides an anode material for an aluminum-air battery and a preparation method thereof, including:

[0049] 1. According to the following alloy composition (mass percentage): Mg: 0.50%, Ga: 0.07%, Sn: 0.03%, In: 0.02%, Bi: 0.16%, Ti: 0.05%, and the rest is Al;

[0050] 2. Put the aluminum block into the graphite crucible and heat it with an intermediate frequency furnace. When the temperature rises to 690°C, add the Ai-Ti alloy and stir evenly. When the temperature rises to 710°C, add Mg, and the temperature drops to 700°C Add Al-Sn, Bi, Ga and In metals at the same time, and slowly introduce argon inert gas into the melt, keep it at 710-720°C for 5 minutes to remove the scum on the surface of the melt, and cast it in a water-cooled copper mold. Cool naturally to room temperature to obtain ingots, and the tool materials such as stirring and slag removal used above are titanium alloys;

[0051] 3. Place the ingot in a suspension furnace at 540°C for 10 ...

Embodiment 2

[0056] This embodiment provides an anode material for an aluminum-air battery and a preparation method thereof, including:

[0057] 1. According to the following alloy composition (mass percentage): Mg: 0.65%, Ga: 0.05%, Sn: 0.01%, In: 0.04%, Bi: 0.10%, Ti: 0.05%, and the rest is Al;

[0058] 2. Put the aluminum block into the graphite crucible and heat it with an intermediate frequency furnace. When the temperature rises to 700°C, add the Ai-Ti alloy and stir evenly. When the temperature rises to 710°C, add Mg, and the temperature drops to 695°C Add Al-Sn, Bi, Ga and In metals at the same time, and slowly introduce argon inert gas into the melt, keep it at 710-720°C for 5 minutes to remove the scum on the surface of the melt, and cast it in a water-cooled copper mold. Cool naturally to room temperature to obtain ingots, and the tool materials such as stirring and slag removal used above are titanium alloys;

[0059] 3. Place the ingot in a suspension furnace at 540°C for 10 ...

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Abstract

The invention relates to an aluminum air battery anode material, a preparing method thereof and an aluminum air battery, and belongs to the technical field of metal air batteries. The aluminum air battery anode material comprises 0.15 to 2.10% of Mg, 0.01 to 0.1% of Ga, 0.01 to 1.10% of Sn, 0.01 to 0.10% of In, 0.01 to 0.50% of Bi, 0.01 to 0.30% of Ti and the balance Al. Sn, Ga and In in the alloycan form low-temperature, in the discharge process, the eutectoid can be attached in a surface oxidation film of an aluminum anode plate to form holes, surface oxidation film fracturing is promoted,activation mass points are formed, current stable output is ensured, through the heat treatment and rolling process, anode plate components and a grain structure are uniform, aluminum air battery anode plate reaction uniformity is ensured, in the reaction process, the aluminum plate surface is not broken or opened, current stable output is achieved, and the anode use rate can be effectively improved.

Description

technical field [0001] The present application relates to the technical field of metal-air batteries, and in particular to an anode material for an aluminum-air battery, a preparation method thereof, and an aluminum-air battery. Background technique [0002] Aluminum-air batteries mainly face problems such as serious self-corrosion (hydrogen evolution reaction) and unstable discharge performance. Most domestic and foreign experts suppress the hydrogen evolution reaction by adjusting the alloy composition or adding Hg, Pt and other elements. However, in the actual application process of the stack, the middle or upper part of the aluminum anode plate is prone to fracture, which not only affects the utilization rate of the aluminum anode, but also causes residual Large pieces of aluminum are difficult to clean, seriously affecting the efficiency of the battery, and the addition of Hg and Pt elements will cause serious pollution to the environment. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C1/03C22F1/047C21D9/46H01M4/46H01M4/62H01M12/06B21B3/00B21B37/00
CPCB21B3/00B21B37/00B21B2003/001C21D9/46C22C1/026C22C1/03C22C21/06C22F1/047H01M4/463H01M4/628H01M12/06H01M2004/027Y02E60/10
Inventor 何立子付海朋夏礼灿李世华刘旺刘兆平李谢华
Owner 宁波烯铝新能源有限公司
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