Aluminum alloy anode material for batteries and preparation method of aluminum alloy anode material

A technology of negative electrode material and aluminum alloy, which is applied in the application field of new energy materials, can solve the problems such as the drop of discharge voltage of negative electrode material and the loss of battery service function, and achieve the effects of uniform distribution, easy control of process parameters and low production cost.

Active Publication Date: 2017-05-31
CHANGSHA XUNYANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the content of the patent invention, it can be seen that the aluminum alloy negative electrode material is at 100mA/cm 2 The discharge voltage value obtained by discharging for 10 hours under the condition of current density

Method used

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  • Aluminum alloy anode material for batteries and preparation method of aluminum alloy anode material
  • Aluminum alloy anode material for batteries and preparation method of aluminum alloy anode material
  • Aluminum alloy anode material for batteries and preparation method of aluminum alloy anode material

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Embodiment 1

[0045] An aluminum alloy negative electrode material for batteries, which is composed of the following components in mass percentage: 0.001% lanthanum (La), 0.001% gallium (Ga), 0.001% magnesium (Mg), 0.001% indium (In), and the balance is aluminum. The purity requirement of all components is ≥99.9%.

[0046] The preparation method of the above-mentioned aluminum alloy negative electrode material for batteries comprises the following steps:

[0047] S1: According to the composition ratio of the set aluminum alloy negative electrode material, weigh the corresponding mass of aluminum and several other alloy elements (lanthanum, gallium, magnesium, indium) on the electronic balance;

[0048] S2: Heat the high-purity graphite crucible to 720°C in a resistance furnace, put metal aluminum in it, and add lanthanum to the aluminum melt after the aluminum melts, and add magnesium, indium, and gallium in order after melting; alloy elements The order of addition is from high to low acc...

Embodiment 2

[0053] An aluminum alloy negative electrode material for batteries, which is composed of the following components in mass percentage: 1% lanthanum (La), 1% gallium (Ga), 1% magnesium (Mg), 1% indium (In), and the balance is aluminum. The purity of all components is required to be ≥99.9%.

[0054] The preparation method of the above-mentioned aluminum alloy negative electrode material for batteries comprises the following steps:

[0055] S1: According to the composition ratio of the set aluminum alloy negative electrode material, weigh the corresponding mass of aluminum and alloy elements (lanthanum, gallium, magnesium, indium) on the electronic balance;

[0056] S2: Heat the high-purity graphite crucible to 750°C in a resistance furnace, put metal aluminum in it, and add lanthanum to the aluminum melt after the aluminum is melted, and add magnesium, indium, and gallium in order after melting; alloy elements The order of addition is added sequentially according to the melting...

Embodiment 3

[0061] An aluminum alloy negative electrode material for batteries, consisting of the following components in mass percentage: 0.02% lanthanum (La), 0.05% gallium (Ga), 0.05% magnesium (Mg), 0.05% indium (In), and the balance is Aluminum; purity of all components ≥99.99%.

[0062] The preparation method of the above-mentioned aluminum alloy negative electrode material for batteries comprises the following steps:

[0063] S1: According to the composition ratio of the set aluminum alloy negative electrode material, weigh the corresponding mass of aluminum and alloy elements (lanthanum, gallium, magnesium, indium) on the electronic balance;

[0064] S2: Heat the high-purity graphite crucible to 730°C in a resistance furnace, put metal aluminum in it, and add lanthanum to the aluminum melt after the aluminum is melted, and add magnesium, indium, and gallium in order after melting; alloy elements The order of addition is added sequentially according to the melting point temperatur...

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Abstract

The invention discloses an aluminum alloy anode material for batteries. The aluminum alloy anode material is prepared from the following components in percentage by mass: 0.001-1% of lanthanum, 0.001-1% of gallium, 0.001-1% of magnesium, 0.001-1% of indium and the balance of aluminum. The invention further provides a preparation method of the aluminum alloy anode material for batteries. According to the preparation method, three types of different thermal treatment processes such as high temperature and long time, medium temperature and short time and low temperature and long time are matched with a deformation process, and optimal regulation and control on material components, texture structures and alloy phase of the aluminum alloy anode material are achieved. The addition of alloy elements is appropriately adjusted, and with the combination of appropriate plastic formation processes and thermal treatment processes of the aluminum alloy anode material, optimal matching of multiple elements can be achieved, and requirements of power source discharge can be met under a large current density of 500mA/cm<2>/1000mA/cm<2>. The aluminum alloy anode material disclosed by the invention is short in production process procedure, easy in process parameter control, good in aluminum alloy anode product quality, low in production cost and beneficial to on-scale production.

Description

technical field [0001] The invention relates to an aluminum alloy negative electrode material for batteries and a preparation method thereof, belonging to the technical field of application of new energy materials. Background technique [0002] Metal aluminum is a very active anode material, its standard potential is very negative, it is -2.4V in alkaline electrolyte solution (vs standard hydrogen electrode), and it is -1.6V in neutral electrolyte solution (vs standard hydrogen electrode ). The electrochemical equivalent of aluminum is very large, 2980Ah / Kg, and the reserves of aluminum are abundant, the cost is low, and the reaction products will not cause environmental pollution, so it is an ideal negative electrode material for batteries. [0003] In the electrolyte solution, the chemical activity of aluminum is high, and its surface is easily protected by the film layer of aluminum oxide, which makes it difficult for the electrochemical reaction to continue, resulting i...

Claims

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Application Information

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IPC IPC(8): H01M4/46
CPCH01M4/463Y02E60/10
Inventor 余鹏
Owner CHANGSHA XUNYANG NEW MATERIAL TECH CO LTD
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