Normal-temperature plastic deformation-rapid solidification magnesium alloy anode material as well as preparation method and application thereof

A technology of plastic deformation and anode materials, which is applied in the direction of fuel cell half-cells and secondary battery-type half-cells, battery electrodes, structural parts, etc., and can solve the problems of poor stability of the discharge platform, difficulty in shedding of corrosion products, and low discharge voltage. and other problems, to achieve the effect of removing stress, improving comprehensive electrochemical performance and reducing alloy defects

Active Publication Date: 2019-11-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the magnesium alloy anode material in the prior art, the corrosion product is difficult to fall off, the discharge platform stability is poor, and the defect or deficiency of the discharge voltage is small, and a kind of room temperature plastic deformation-rapidly consolidated magnesium alloy anode material is provided. Preparation

Method used

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  • Normal-temperature plastic deformation-rapid solidification magnesium alloy anode material as well as preparation method and application thereof
  • Normal-temperature plastic deformation-rapid solidification magnesium alloy anode material as well as preparation method and application thereof
  • Normal-temperature plastic deformation-rapid solidification magnesium alloy anode material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a magnesium alloy anode material, the preparation method of which is as follows.

[0042] 1. The composition of the cerium of the present embodiment, yttrium modified AP65 magnesium alloy is 6.1wt.% Al, 5.1wt.% Pb, 0.13wt.% Ce, 0.13wt.% Y, 88.54wt.% Mg. Among them, magnesium and aluminum are pure metals with a purity of 99.99wt.%, and cerium and yttrium are added in the form of magnesium-rare earth master alloy.

[0043] 2. Put the magnesium, aluminum, lead, magnesium-cerium and magnesium-yttrium intermediate alloys into the high-purity graphite crucible at one time, pump the air pressure in the furnace to 1.5Pa and then fill it with argon until the air pressure reaches 0.05MPa, Then the fully stirred melt is cast in a stainless steel crucible in the furnace to obtain a cast AP65 magnesium alloy ingot with a size of 400mm×200mm×(30-50)mm.

[0044] 3. Place the as-cast AP65 magnesium alloy ingot in a glove box filled with high-purity argon, use...

Embodiment 2

[0051] This embodiment provides a magnesium alloy anode material, the preparation method of which is as follows.

[0052] 1. The composition of the cerium of the present embodiment, yttrium modified AP65 magnesium alloy is 6.1wt.% Al, 5.1wt.% Pb, 0.13wt.% Ce, 0.13wt.% Y, 88.54wt.% Mg. Among them, magnesium and aluminum are pure metals with a purity of 99.99wt.%, and cerium and yttrium are added in the form of magnesium-rare earth master alloy.

[0053] 2. Put the magnesium, aluminum, lead, magnesium-cerium and magnesium-yttrium intermediate alloys into the high-purity graphite crucible at one time, pump the air pressure in the furnace to 1.5Pa and then fill it with argon until the air pressure reaches 0.05MPa, Then the fully stirred melt is cast in a stainless steel crucible in the furnace to obtain a cast AP65 magnesium alloy ingot with a size of 400mm×200mm×(30-50)mm.

[0054] 3. Place the as-cast AP65 magnesium alloy ingot in a glove box filled with high-purity argon, use...

Embodiment 3

[0061] This embodiment provides a magnesium alloy anode material, the preparation method of which is as follows.

[0062] 1. The composition of the cerium of the present embodiment, yttrium modified AP65 magnesium alloy is 6.2wt.% Al, 4.8wt.% Pb, 0.05wt.% Ce, 0.15wt.% Y, 88.8wt.% Mg. Among them, magnesium and aluminum are pure metals with a purity of 99.99wt.%, and cerium and yttrium are added in the form of magnesium-rare earth master alloy.

[0063] 2. Put the magnesium, aluminum, lead, magnesium-cerium and magnesium-yttrium intermediate alloys into the high-purity graphite crucible at one time, pump the air pressure in the furnace to 1.5Pa and then fill it with argon until the air pressure reaches 0.05MPa, Then the fully stirred melt is cast in a stainless steel crucible in the furnace to obtain a cast AP65 magnesium alloy ingot with a size of 400mm×200mm×(30-50)mm.

[0064] 3. Place the as-cast AP65 magnesium alloy ingot in a glove box filled with high-purity argon, use ...

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Abstract

The invention relates to a normal-temperature plastic deformation-rapid solidification magnesium alloy anode material as well as a preparation method and application thereof. The preparation method comprises the following steps that S101, as-cast AP65 magnesium alloy is treated into magnesium chips, grains are refined through high-energy ball milling, and powder is obtained and ground; S102, in avacuum environment, spark plasma sintering is carried out after pretreatment, and the material is obtained, or S201, the as-cast AP65 magnesium alloy is treated into magnesium chips, grains are refined through high-energy ball milling, powder is obtained and ground; and S202, after spark plasma sintering is conducted, heat treatment is conducted under the vacuum condition, and the material is obtained. According to the invention, high-energy ball milling, spark plasma sintering and consolidation technology and the like are adopted, the magnesium alloy anode material is promoted to be rapidly and uniformly dissolved under low current density, and peeling off of a corrosion product is accelerated, so that the discharge voltage of the magnesium alloy is improved, the voltage fluctuation is reduced, stable work of an electric appliance is facilitated, and the comprehensive electrochemical performance of the magnesium alloy anode material is further improved.

Description

technical field [0001] The invention belongs to the field of chemical power electrode materials, and in particular relates to a normal temperature plastic deformation-rapid consolidation magnesium alloy anode material and its preparation method and application. Background technique [0002] Magnesium-air battery has the characteristics of high energy density, little damage to the air electrode by using neutral electrolyte, high safety in use, wide operating temperature range (-20 ~ 80 ℃), abundant reserves and low cost, and can be widely used in Outdoor backup power supply, disaster relief emergency power supply, etc. AP65 magnesium alloy (Mg-6wt.%Al-5wt.%Pb) is used as magnesium-air battery anode, relative to active magnesium anode materials such as Mg-Hg-Ga, Mg-Al-Hg, Mg-Al-Tl, AP65 The alloy has relatively little pollution to the environment, has a high open circuit voltage and discharge voltage, and has a high current density (≥100mA cm -2 ) The lower anode utilization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/46H01M12/08B22F3/105B22F9/04C22C23/02
CPCB22F3/105B22F9/04B22F2003/1051B22F2009/043B22F2998/10C22C23/02H01M4/466H01M12/08Y02E60/10
Inventor 黄益祥王乃光施志聪李文平李冠洲
Owner GUANGDONG UNIV OF TECH
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