Magnesium alloy anode material for water activated batteries and manufacture method thereof

A technology for anode materials and magnesium alloys, applied in electrode manufacturing, battery electrodes, circuits, etc., can solve problems such as few reports, achieve good discharge effect, low production cost, and extensive industrialization

Inactive Publication Date: 2009-09-09
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on magnesium anode materials belongs to the frontier of magnesium battery research, and there are few targeted research reports at home and abroad.

Method used

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  • Magnesium alloy anode material for water activated batteries and manufacture method thereof

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Effect test

Embodiment 1

[0025] Pure magnesium (Mg>99.8%), alloying elements aluminum (Al>99.9%) and gallium (Ga>99.9%) are made into an alloy according to the composition ratio: Al: 1%, Ga4%, Mg95%. First melt magnesium in a crucible made of low-carbon steel at a melting temperature of 750°C. After the magnesium is completely melted, add alloy components aluminum and gallium. After the aluminum and gallium are melted, stir the melt for 10 minutes and then let it stand After 10 minutes, it is poured into a steel mold to obtain a magnesium alloy anode material ingot.

[0026] The magnesium alloy anode material ingot was annealed at 350°C for 24 hours, so that the alloy components could diffuse evenly at high temperature. The uniformly diffused magnesium alloy ingot is preheated to 320°C, the extrusion die is heated to 400°C, and then extruded to obtain a profile. This profile can be used as a water-activated battery material, and its discharge performance is shown in Table 1.

Embodiment 2

[0028] Made of pure magnesium (Mg>99.8%), alloying elements aluminum (Al>99.9%), gallium (Ga>99.9%), according to the composition ratio: Al: 7%, Ga0.5%, Mg92.5%, made alloy. First melt magnesium in a crucible made of low-carbon steel at a melting temperature of 750°C. After the magnesium is completely melted, add alloy components aluminum and gallium. After the aluminum and gallium are melted, stir the melt for 40 minutes and then let it stand After 40 minutes, it was poured into a steel mold to obtain a magnesium alloy anode material ingot.

[0029] The magnesium alloy anode material ingot was annealed at 450°C for 12 hours to make the alloy components diffuse evenly at high temperature. The uniformly diffused magnesium alloy ingot is extruded. During extrusion, the cast billet is preheated to 400°C, the mold is heated to 500°C, and then extruded to obtain a profile. This profile can also be used as a water-activated battery, and its discharge performance is shown in Table...

Embodiment 3

[0031] Pure magnesium (Mg > 99.8%), alloy elements aluminum (Al > 99.9%), gallium (Ga > 99.9%), according to the composition ratio: Al: 6%, Ga2%, Mg92%, made into an alloy. First melt magnesium in a crucible made of low-carbon steel at a melting temperature of 750°C. After the magnesium is completely melted, add alloy components aluminum and gallium. After the aluminum and gallium are melted, stir the melt for 30 minutes and then let it stand After 30 minutes, it was poured into a steel mold to obtain a magnesium alloy anode material ingot.

[0032]The ingot of magnesium alloy anode material was annealed at 400°C for 24 hours, so that the alloy components could be diffused evenly at high temperature. The uniformly diffused magnesium alloy ingot is rolled. When rolling, preheat the cast ingot to 400°C in an electric furnace, and then carry out hot rolling while it is hot. The deformation of each pass of rolling does not exceed 35%. After one pass of rolling, the alloy material...

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Abstract

The invention discloses a magnesium alloy anode material for water activated batteries. Aluminum and gallium are added to melted and cast pure magnesium with the magnesium purity larger than 99.8 percent, wherein the content of the aluminum is from 1 percent to 7 percent, and the content of the gallium is from 0.5 percent to 4 percent. The material can be processed into different shapes by the metal material processing processes, such as casting, extruding, rolling, and the like, has excellent electrochemic property and can be used as a battery material by adopting water as (comprising acidulous water, neutral water and alkaline water) as an electrolyte, using magnesium alloy as an anode material and matching with different cathode materials so as to release needed electric energy. Either a sheet or a plate can be directly used as the magnesium alloy anode material for batteries, and the magnesium alloy anode material for batteries can also be manufactured by matching the extruding process with the rolling process so as to have evener performance and better discharge effect.

Description

technical field [0001] The invention relates to a magnesium alloy anode material for a battery activated by using water as an electrolyte and a manufacturing method thereof, and relates to the field of new anode materials and metal materials for batteries and their processing fields. Background technique [0002] Magnesium alloy has the advantages of high strength, good shock absorption performance, good electromagnetic shielding performance, good heat dissipation, easy processing, and recyclability. It is widely used in aerospace, automobiles, 3C products, power tools, optical equipment, and sporting goods. In addition to being used in the field of structural materials, magnesium alloys can also be used as functional materials. At present, a battery assembled with a magnesium alloy anode material can be developed, and water can be used as the electrolyte to activate the battery discharge. The magnesium alloy battery anode material includes a seawater activated battery magn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01M6/32C22C23/02C22C23/00H01M4/04C22C1/02C22F1/06
CPCY02E60/12Y02E60/10
Inventor 余琨
Owner CENT SOUTH UNIV
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