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Anode material for high-power aluminum air battery at low temperature and preparation method of anode material

An aluminum-air battery and anode material technology, which is applied in battery electrodes, fuel cell-type half-cells and primary battery-type half-cells, circuits, etc. The effect of utilization

Active Publication Date: 2022-04-15
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of poor discharge performance and unstable discharge of aluminum-air batteries at low temperatures, the present invention provides a high-power aluminum-air anode material suitable for low temperatures using industrial pure aluminum as a melting material and a preparation method thereof, with the purpose of improving aluminum-air battery The discharge performance of the air anode plate under low temperature conditions and the serious problem of self-corrosion of the anode plate with industrial pure aluminum as the melting material reduce production costs and are environmentally friendly

Method used

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  • Anode material for high-power aluminum air battery at low temperature and preparation method of anode material
  • Anode material for high-power aluminum air battery at low temperature and preparation method of anode material
  • Anode material for high-power aluminum air battery at low temperature and preparation method of anode material

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preparation example Construction

[0023] The above-mentioned preparation method for the high-power aluminum-air battery anode material at low temperature includes:

[0024] The batching method adopted is as follows: Mg, Mn, Bi and 997 industrial pure aluminum are added in block form, and Sn is added in the form of Al-50% Sn master alloy. Wrap with aluminum foil when adding to avoid burning phenomenon.

[0025] Put the cut 997 industrial pure aluminum block into the preheated graphite crucible and heat it with an intermediate frequency furnace. When the temperature rises to 710-740°C, add an intermediate alloy containing Mg, Mn, Bi and Al-50%Sn Elements of aluminum foil, and stir slowly to combine. At this time, the temperature will drop to 710-730°C, hold the temperature for 5-8 minutes, remove the slag, and cast it in a water-cooled copper mold to make an ingot.

[0026] The obtained ingot is placed in a suspension furnace, kept at 420-650°C for 1-3 hours, then water-cooled, the surface scale is milled off ...

Embodiment 1

[0029] A high-power aluminum-air battery anode material for low temperature, including: Mg0.4%, Sn0.05%, Bi0.1%, Mn0.3%, and the rest is 997 industrial pure aluminum.

[0030] The above-mentioned preparation method for the high-power aluminum-air battery anode material at low temperature comprises the following steps:

[0031] Put the 997 industrial pure aluminum block into the preheated graphite crucible, put the graphite crucible into the heating furnace and heat until all the pure aluminum is melted to form an aluminum melt;

[0032] Add Mg, Sn (Al-50% Sn intermediate alloy form), Bi, Mn aluminum foil to the molten aluminum melt at 720°C, and stir until the material is completely melted to obtain a mixed melt; The body contains 0.4% Mg, 0.05% Sn, 0.1% Bi, 0.3% Mn by mass percentage, and the rest is 997 industrial pure Al;

[0033] Heat at 720°C for 5 minutes and stir evenly;

[0034] After the heat preservation is over, remove the slag, and then cast it into a copper wate...

Embodiment 2

[0038] A high-power aluminum-air battery anode material for low temperature, including: Mg0.4%, Sn0.1%, Bi0.1%, Mn0.3%, and the rest is 997 industrial pure Al.

[0039] The above-mentioned preparation method for the high-power aluminum-air battery anode material at low temperature comprises the following steps:

[0040] Put the 997 industrial pure aluminum block into the preheated graphite crucible, put the graphite crucible into the heating furnace and heat until all the pure aluminum is melted to form an aluminum melt;

[0041] Add Mg, Sn (Al-50% Sn intermediate alloy form), Bi, Mn aluminum foil to the molten aluminum melt at 720°C, and stir until the material is completely melted to obtain a mixed melt; The body contains 0.4% Mg, 0.1% Sn, 0.1% Bi, 0.3% Mn by mass percentage, and the rest is 997 industrial pure Al;

[0042] Heat at 720°C for 5 minutes and stir evenly;

[0043] After the heat preservation is completed, remove the slag, and then cast it into a copper water-c...

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Abstract

The invention discloses a high-power aluminum air battery anode material used at a low temperature and a preparation method thereof, belongs to the technical field of metal air batteries, and provides a high-power aluminum air anode material which takes industrial pure aluminum as a melt and is suitable for the low temperature and a preparation method of the high-power aluminum air anode material aiming at the problems that the discharge performance of the aluminum air battery at the low temperature becomes poor and the discharge is unstable. The invention aims to improve the discharge performance of the aluminum air anode plate under a low-temperature condition and solve the problem of serious self-corrosion of the anode plate taking industrial pure aluminum as a melt, reduce the production cost, and is green and environment-friendly. Compared with the traditional anode material, the anode material provided by the invention has the advantages that the use temperature can be-45 DEG C to room temperature, the highest use temperature can reach + 60 DEG C, and the suitable low-temperature use temperature range is-35 to-25 DEG C. The anode material can keep good open-circuit voltage, current density, performance stability and other effects at low temperature, and has high anode utilization rate in use.

Description

technical field [0001] The invention belongs to the technical field of metal-air batteries, and in particular relates to a high-power aluminum-air battery anode material used at low temperature and a preparation method thereof. Background technique [0002] With the development of the economy, human beings consume more and more non-renewable energy such as fossil energy, and the pollution to the environment is becoming more and more serious. Searching for new green energy has become a key research direction. Metal fuel cells are a new type of pollution-free green energy, mainly including Li, Mg, Al, Zn and other metal fuel cells. Among them, metal aluminum has become one of the anode materials for metal fuel cells with great research prospects due to its high electrochemical equivalent, mass energy density, volumetric energy density and high electrochemical activity. At present, the research on aluminum anodes in the world is mainly in several aspects such as alloy composit...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C21/06C22C1/03C22F1/04C22F1/047H01M4/46H01M12/06
CPCY02E60/50
Inventor 何立子贾志明王月莹杨炳林王鑫高思睿刘宏亮
Owner NORTHEASTERN UNIV
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