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Alloy anode material for aluminum-air battery, preparation method thereof, and aluminum-air battery

An aluminum-air battery and alloy anode technology, applied in the field of electrochemistry, can solve problems such as low discharge potential, and achieve the effects of suppressing hydrogen evolution reaction, simple process, and high anode utilization rate

Active Publication Date: 2021-03-26
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still difficult to ensure that the reduction has a lower discharge potential while playing the above-mentioned role.

Method used

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  • Alloy anode material for aluminum-air battery, preparation method thereof, and aluminum-air battery
  • Alloy anode material for aluminum-air battery, preparation method thereof, and aluminum-air battery

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preparation example Construction

[0040] The method for preparing an alloy anode material for an aluminum-air battery provided in an embodiment of the present invention includes: preparing the alloy anode material for an aluminum-air battery from a raw material containing Pb, Bi, Ga, Li, B and Al, wherein Pb in the raw material is , Bi, Ga, Li, B and Al are configured according to the chemical composition of alloy anode materials for aluminum-air batteries.

[0041] Specifically include:

[0042] S1. First melt 99.99% pure aluminum ingot in the melting furnace and heat it up to 700-800°C, keep it warm for 10-40 minutes, and then add alloying elements to the molten aluminum, among which the alloying elements Pb, Bi, Ga, and B are pure metals respectively. The alloy element Li is added in the form of Al-Li master alloy. After adding alloy elements, the alloy melt is heated to 720-820°C and kept for 30-60 minutes. After refining and standing, it is poured to make a billet. The pouring temperature is 710-810°C. ...

Embodiment 1

[0050] The alloy anode material for an air battery provided in this embodiment has the following chemical composition by mass fraction: 1.4% Pb, 1.8% Bi, 0.8% Ga, 0.6% Li, 0.0008% B, and the rest is Al.

[0051] Its preparation method is as follows:

[0052] In the smelting furnace, 99.99% pure aluminum ingots are first melted and heated to 750°C, kept for 30 minutes, and then pure Pb, pure Bi, pure Ga, pure B and Al-Li intermediate alloys are successively added according to the composition requirements. After adding alloying elements, the alloy melt is heated to 760°C and held for 40 minutes. After refining and standing still, it is poured to make a billet. The pouring temperature is 740°C.

[0053] Perform homogenization annealing on the slab, the homogenization annealing temperature is 450°C, and the holding time is 18h; after removing the oxide layer on the surface of the ingot, the slab is rolled to 1.5mm, and then heat treated, the annealing temperature is 380°C, and the a...

Embodiment 2

[0055] The alloy anode material for an air battery provided in this embodiment has the following chemical composition by mass fraction: 0.01% Pb, 2.5% Bi, 0.01% Ga, 2% Li, 0.0001% B, and the rest is Al.

[0056] Its preparation method is as follows:

[0057] In the smelting furnace, 99.99% pure aluminum ingots are first melted and heated to 700°C, kept for 40 minutes, and then pure Pb, pure Bi, pure Ga, pure B and Al-Li intermediate alloys are successively added according to the composition requirements. After adding alloying elements, the alloy melt is heated to 720°C and held for 60 minutes. After refining and standing still, it is poured to make a slab, and the pouring temperature is 710°C.

[0058] Homogenizing annealing is carried out on the slab, the homogenizing annealing temperature is 420°C, and the holding time is 24h; after removing the oxide layer on the surface of the ingot, the slab is rolled to 1.5mm, and then heat treated, the annealing temperature is 350°C, an...

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Abstract

The invention relates to the technical field of electrochemistry, and discloses an alloy anode material for an aluminum-air battery, a preparation method of the alloy anode material and the aluminum-air battery. The alloy anode material for the aluminum-air battery comprises the following chemical components in percentage by mass: 0.01 to 2.0 percent of Pb, 0.01 to 2.5 percent of Bi, 0.01 to 1.5 percent of Ga, 0.01 to 2.0 percent of Li, 0.0001 to 0.0010 percent of B and the balance of Al. The preparation method of the alloy anode material for the aluminum-air battery comprises the step of preparing the alloy anode material for the aluminum-air battery by adopting the raw materials containing the chemical components. When the alloy anode material for the aluminum-air battery is used, the hydrogen evolution reaction on the surface is improved, the discharge potential is low, and the anode utilization rate is high. The aluminum-air battery comprises the alloy anode material for the aluminum-air battery, and is good in electrochemical performance.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, in particular to an alloy anode material for an aluminum-air battery, a preparation method thereof, and an aluminum-air battery. Background technique [0002] Aluminum-air battery is a metal fuel cell, which consists of three parts: positive electrode, negative electrode, and electrolyte. Research on aluminum-air batteries began in the 1960s. In 1962, S.Zaromb in the United States confirmed the technical feasibility of aluminum-air batteries with alkaline solution as the working medium. In 1979, Despic A R and others took the lead in studying the work and application of aluminum-air batteries in neutral salt water. Aluminum-air batteries have the advantages of high electrochemical equivalent, relatively negative electrode potential, and abundant aluminum resources. Aluminum-air batteries have broad application prospects in fields such as electric vehicles, communication base stations,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/92H01M4/88H01M12/06
CPCH01M4/8825H01M4/9058H01M4/921H01M12/06
Inventor 赵虎黄正华周楠杨莉李新涛黄惠兰
Owner GUANGDONG INST OF NEW MATERIALS
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