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

An aluminum-air battery and anode alloy technology, which is applied to fuel cell type half cells and secondary battery type half cells, battery electrodes, circuits, etc., can solve problems such as poor anode utilization, and achieve long service life, The effect of suppressing hydrogen evolution reaction and negative discharge potential

Active Publication Date: 2020-04-24
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing multi-component aluminum alloy anode materials still have the problem of poor anode utilization.

Method used

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

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preparation example Construction

[0041] In addition, the present application also provides a method for preparing the above-mentioned anode alloy material, which includes melting and casting components of the above-mentioned anode alloy material into a billet, and performing annealing treatment on the billet. Specifically, it includes the following steps:

[0042] S1, smelting.

[0043] First melt the aluminum ingot, then add alloy elements Mg, Sn, Ce, B and Ti, add refining agent, refine and stand for 30 minutes, then pour to make a billet.

[0044] Specifically, the aluminum ingot is first melted and heated to 700-800°C, kept for 10-40min, then Mg, Sn, Ce, B and Ti are added, Mg and Sn are added in the form of pure metal; Ce is added in the form of Al-Ce master alloy The form is added; B and Ti are added in the form of Al-Ti-B master alloy. Subsequently, continue to heat up to 720-820°C and keep it warm for 30-60min, and then pour at 710-810°C to make a cast slab.

[0045] When the alloying elements in t...

Embodiment 1

[0052] This embodiment provides an anode alloy material, the composition of which includes: 4.2% Mg, 1.3% Sn, 0.8% Ce, 0.0007% B, 1.1% Ti, and the rest is Al.

[0053] Its preparation method includes:

[0054] In the smelting furnace, 99.99% pure aluminum ingots are first melted and heated to 770°C, kept for 25 minutes, and then pure Mg, pure Sn and Al-Ce, Al-Ti-B master alloys are successively added according to the composition requirements. After adding alloying elements, the alloy melt is heated to 780°C and held for 50 minutes. After refining and standing, it is poured to make a billet, and the pouring temperature is 750°C.

[0055] Carry out homogenization annealing on the slab, and raise the temperature to the homogenization annealing temperature of 480°C at a heating rate of 20°C / min and keep it for 19h; after removing the oxide layer on the surface of the ingot, roll the slab to 2.0mm, and then perform heat treatment and annealing at a temperature of 20 The heating ra...

Embodiment 2-3

[0057] Embodiment 2-3 is substantially the same as embodiment 1, the difference is that the mass percentages of its components are different:

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Abstract

The invention discloses an anode alloy material, a preparation method thereof, an anode for an aluminum-air battery and the aluminum-air battery, and relates to the field of anode materials for air batteries. The anode alloy material comprises aluminum and alloy elements added into the aluminum, wherein the alloy elements comprise, by mass, 0.01%-5.5% of Mg, 0.01%-3.0% of Sn, 0.01%-2.5% of Ce, 0.0001%-0.0010% of B and 0.01%-2.0% of Ti. The preparation method comprises the steps of preparing the anode alloy material from the raw materials according to the component matching ratio. The components of the anode alloy material are limited, the dosage of each component of the anode alloy material is adjusted, the optimal component dosage ratio is obtained, the hydrogen evolution reaction of thealuminum alloy anode material can be effectively inhibited, and the anode alloy material with negative average discharge potential and high anode utilization rate is developed.

Description

technical field [0001] The invention relates to the field of anode materials for air batteries, in particular to an anode alloy material, a preparation method thereof, an anode for an aluminum-air battery, 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, communicati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C1/03C22F1/047H01M4/46H01M12/08
CPCC22C1/026C22C1/03C22C21/06C22F1/047H01M4/463H01M12/08Y02E60/10
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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