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A kind of anode material for seawater aluminum-air battery and preparation method thereof

An anode material and air battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of complex production process of anode materials, low high-power discharge efficiency, high battery cost, etc., and increase the effective utilization of alloys , Improving current efficiency and inhibiting hydrogen evolution corrosion

Active Publication Date: 2020-08-25
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the Chinese patent application (publication number: CN101901893A) relates to an aluminum alloy anode material for batteries, using pure aluminum as a raw material, adding alloying elements Mg (0.5-2.0wt%), Ga (0.005-0.5wt%), Bi (0.005-1.0wt%) %), Sn(0.005~1.0wt%), In(0.005~0.2wt%), Ca(0.005~0.05wt%); Chinese patent application (publication number: CN106340612A) relates to the aluminum alloy anode material for batteries, with pure aluminum as Raw materials, adding alloying elements Ga (0.01-1.0wt%), Sn (0.1-2.0wt%), Bi (0.01-2.0wt%), Pb (0.01-2.0wt%), In (0.05-1.0wt%), Although this type of aluminum alloy anode material has good activity, its self-corrosion rate is relatively high, and the high-power discharge efficiency is low; in addition, most of this type of electrodes use high-purity Al as raw material, which contains more noble metals such as Ga and In. , and the production process of anode materials is complex, resulting in high battery costs. In addition, In, Pb, etc. can cause pollution to water bodies and are harmful to the environment

Method used

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  • A kind of anode material for seawater aluminum-air battery and preparation method thereof

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Embodiment 1

[0038] According to the composition and ingredients of sample A in Table 1, commercially pure aluminum (99.8wt% Al) was put into the melting furnace and melted (760°C) to form an aluminum alloy melt, and argon gas was introduced during the above process for protection. When the melt temperature is 730°C, use a graphite pressure cover to press the low melting point alloy elements Sn (99.9%), Ga (99.99%), Mg (99.85%), Zn (99.8wt%) (wrapped in aluminum foil) into the melt for 3 minutes, The completely melted aluminum alloy melt was stirred by electromagnetic for 10 min. Then the melt is introduced into a static furnace at 740°C, and a mixed gas composed of argon and hexachloroethane powder (hexachloroethane 50g / m 3 ) for 5 minutes, then inject pure argon for 10 minutes, the pressure of argon is 0.1MPa, and then stand still for 15 minutes to remove the oxidation scum on the surface of the aluminum alloy melt with a graphite tool. Cast the melt in the static furnace at a casting t...

Embodiment 2

[0040] According to the composition and ingredients of sample B in Table 1, industrial pure aluminum (99.8wt% Al) was put into the melting furnace and melted (760°C) to form an aluminum alloy melt. When the melt temperature is 730°C, use a graphite pressure cover to press the low melting point alloy elements Sn (99.9%), Ga (99.99%), Mg (99.85%), Zn (99.8wt%) (wrapped in aluminum foil) into the melt for 3 minutes, The completely melted aluminum alloy melt was stirred by electromagnetic for 10 min. Then the melt is introduced into a static furnace at 740°C, and a mixed gas composed of argon and hexachloroethane powder (hexachloroethane 50g / m 3 ) for 5 minutes, then inject pure argon for 10 minutes, the pressure of argon is 0.1MPa, and then stand still for 15 minutes to remove the oxidation scum on the surface of the aluminum alloy melt with a graphite tool. Cast the melt in the standing furnace at a casting temperature of 730°C, a casting speed of 300mm / min, and a cooling water...

Embodiment 3

[0042] According to the composition and ingredients of sample C in Table 1, commercially pure aluminum (99.8wt% Al) was put into a melting furnace and melted (760°C) to form an aluminum alloy melt, and argon gas was introduced for protection during the above process. When the melt temperature is 730°C, use a graphite pressure cover to press the low melting point alloy elements Sn (99.9%), Ga (99.99%), Mg (99.85%), Zn (99.8wt%) (wrapped in aluminum foil) into the melt for 3 minutes, The completely melted aluminum alloy melt was stirred by electromagnetic for 10 min. Then the melt is introduced into a static furnace at 740°C, and a mixed gas composed of argon and hexachloroethane powder (hexachloroethane 50g / m 3 ) for 5 minutes, then inject pure argon for 10 minutes, the pressure of argon is 0.1MPa, and then stand still for 15 minutes to remove the oxidation scum on the surface of the aluminum alloy melt with a graphite tool. Cast the melt in the static furnace at a casting tem...

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Abstract

The invention relates to an anode material for seawater aluminum-air batteries and a preparation method thereof, and belongs to the field of chemical batteries. An anode material for seawater aluminum-air batteries. The anode material is an aluminum alloy and consists of the following components in mass percentage: Sn: 0.5~1.5%, Ga: 0.005~0.05%, Mg: 0.2~1%, Zn :0.5~1.5%, impurity content ≤0.30%, the balance is aluminum. The anode material for the seawater aluminum-air battery of the present invention uses industrial pure aluminum as raw material and contains a small amount of Ga, which reduces the production cost; it abandons In and Pb alloy elements that are seriously harmful to the environment, is environmentally friendly and healthy, and increases the market Competitiveness. The anode is produced by a semi-continuous casting method. The production process is simple and suitable for batch production. It also reduces the anode material sinking, improves the yield, reduces energy consumption, reduces production costs, and has good economic benefits.

Description

technical field [0001] The invention relates to an anode material for a seawater aluminum-air battery and a preparation method thereof, belonging to the field of chemical batteries. Background technique [0002] Due to the depletion of fossil fuels such as coal and oil, the increase in global energy demand, and the environmental pollution caused by the use of fossil fuels, human beings urgently need new energy sources to meet human production and life. Metal-air batteries have the characteristics of high efficiency and cleanliness, and have been mentioned as new energy storage devices. The metal-air battery is a metal fuel cell that uses metal as the anode and oxygen in the air as the cathode, and uses a neutral or alkaline electrolyte as a medium to generate electrical energy through a chemical reaction under the action of a catalyst. [0003] Since the 1960s, aluminum has become the most attractive anode material for metal-air batteries because of its high electrochemical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04H01M4/46
CPCC22C1/026C22C21/00C22F1/002C22F1/04H01M4/463Y02E60/10
Inventor 张海涛吴子彬郭成王东涛秦克班春燕崔建忠
Owner NORTHEASTERN UNIV LIAONING
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