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

A technology for aluminum-air batteries and anode materials, applied in battery electrodes, fuel cell-type half-cells, primary battery-type half-cells, circuits, etc., can solve the problems of poor efficiency, poor electrochemical performance, and complex composition structure problems such as low cost, low self-corrosion rate, and simple preparation process

Active Publication Date: 2021-02-05
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nisancioglu et al. have done a lot of research on a series of binary, multi-component and commercial aluminum alloys, and found that after the Al-Pb alloy was quenched at 600°C for 60 minutes, the electrode potential shifted negatively, at 0.1m A / cm 2 When the current density is discharged, the potential negative shift of Al-0.003Pb alloy after heat treatment reaches 300mV. This is mainly because after high-temperature heat treatment, Pb will melt, diffuse and enrich in the interface between the metal and the oxide film, making the oxide film loose. Thereby activating the anode, but the efficiency of the aluminum alloy sacrificial anode has not been effectively improved
To sum up, the existing aluminum alloy sacrificial anodes generally have disadvantages such as complex composition structure, low capacitance, unreasonable price, and poor electrochemical performance.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An aluminum-air battery anode material, the composition and mass percentage of which are: bismuth (Bi) 0.10wt%, lead (Pb) 0.15wt%, gallium (Ga) 0.02wt%, and the balance is Al.

[0022] The preparation method of the aluminum-air battery anode material of this embodiment comprises the following steps:

[0023] (1) Ingredients: Weigh Bi, Pb, Ga, and Al according to the material components. The weighing operation is completed in a vacuum glove box at 5°C. The weighed materials are wrapped with aluminum foil with a purity of 99.99% and stored in a vacuum In the drying oven, the vacuum degree of the vacuum drying oven is 60Pa, the temperature is -5°C, the purity of Bi, Pb, Ga, and Al raw materials are all 99.99%, and the weight of aluminum foil is included in the total weight of aluminum;

[0024] (2) Melting: In a nitrogen atmosphere, preheat the graphite crucible to 200°C, add aluminum ingots, continue heating to 740°C and heat for 45 minutes after the aluminum is melted. ...

Embodiment 2

[0028] An aluminum-air battery anode material, the composition and mass percentage of which are: bismuth (Bi) 0.15wt%, lead (Pb) 0.10wt%, gallium (Ga) 0.035wt%, and the balance is Al.

[0029] The preparation method of the aluminum-air battery anode material of this embodiment comprises the following steps:

[0030] (1) Ingredients: Weigh Bi, Pb, Ga, and Al according to the material components. The weighing operation is completed in a vacuum glove box at 6°C. The weighed materials are wrapped with aluminum foil with a purity of 99.99% and stored in a vacuum In the drying oven, the vacuum degree of the vacuum drying oven is 70Pa, the temperature is 0°C, the purity of Bi, Pb, Ga, and Al raw materials are all 99.99%, and the weight of aluminum foil is included in the total weight of aluminum;

[0031] (2) Melting: In a nitrogen atmosphere, preheat the graphite crucible to 180°C, add aluminum ingots, continue to heat to 720°C and heat it for 50 minutes after the aluminum is melted...

Embodiment 3

[0035] An aluminum-air battery anode material, the composition and mass percentage of which are: bismuth (Bi) 0.12wt%, lead (Pb) 0.12wt%, gallium (Ga) 0.015wt%, and the balance is Al.

[0036] The preparation method of the aluminum-air battery anode material of this embodiment comprises the following steps:

[0037] (1) Ingredients: Weigh Bi, Pb, Ga, and Al according to the material components, and the weighing operation is completed in a vacuum glove box at 8°C. The weighed materials are wrapped with aluminum foil with a purity of 99.99% and stored in a vacuum In the drying oven, the vacuum degree of the vacuum drying oven is 55Pa, the temperature is -2°C, the purity of Bi, Pb, Ga, and Al raw materials are all 99.99%, and the weight of aluminum foil is included in the total weight of aluminum;

[0038] (2) Melting: In an argon atmosphere, preheat the graphite crucible to 230°C, add aluminum ingots, continue heating to 760°C and heat for 60 minutes after the aluminum melts, ad...

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Abstract

The invention discloses an aluminum air battery anode material and a preparing method thereof. The aluminum air battery anode material comprises, by mass percent, 0.10%-0.15% of bismuth, 0.10%-0.15% of lead, 0.015%-0.035% of gallium and the balance aluminum. The anode material is prepared through the machining processes of mixing, smelting, rolling and heat treatment. The anode material componentdesign is reasonable, the cost is low, the product performance is good, the preparing process is simple, and the aluminum air battery anode material and the preparing method of the aluminum air battery anode material are suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to an aluminum-air battery anode material and a preparation method thereof, and belongs to the technical field of development and preparation of new anode materials for high-power chemical power sources. Background technique [0002] Aluminum-air batteries have a series of advantages such as high specific energy, long cycle life, safety and reliability, and environmental friendliness. However, the passivation film on the surface of the aluminum substrate reduces the anode activation ability, and the self-corrosion rate of the aluminum anode is high. These two major defects It directly affects the rapid development and commercialization of aluminum-air batteries. Aluminum itself is an extremely active metal. When it is exposed to the air, a dense oxide film will be formed on the surface. During the electrode polarization process of aluminum, a layer of oxide film will also be formed on the surface. This layer of oxide film will hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C1/06C22C21/00C22F1/02C22F1/04H01M4/46H01M12/06B21B37/16
CPCB21B37/16C22C1/026C22C1/06C22C21/00C22F1/02C22F1/04H01M4/463H01M12/06Y02E60/10
Inventor 周生刚泉贵岭徐阳曹勇焦增凯罗开亮马双双彭斌
Owner KUNMING UNIV OF SCI & TECH
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