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Vibration aging treatment method of copper-aluminum-silicon nano alloy material and application of vibration aging treatment method

A technology of vibration aging and treatment methods, which is applied in the direction of negative electrodes, electrical components, electrochemical generators, etc., can solve the problems of short cycle life, low first-week efficiency, long charge and discharge time, etc., achieve reasonable particle size distribution, meet coating Cloth requirements, unique effect of microstructure

Inactive Publication Date: 2018-03-06
산시우테하이머뉴매테리얼스테크놀러지컴퍼니리미티드
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the negative electrode material of the existing lithium battery is nano-scale, and there is basically no stress relief step and process. The main problems when using silicon as the negative electrode material are: short cycle life, low efficiency in the first week and long charge and discharge time

Method used

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  • Vibration aging treatment method of copper-aluminum-silicon nano alloy material and application of vibration aging treatment method
  • Vibration aging treatment method of copper-aluminum-silicon nano alloy material and application of vibration aging treatment method
  • Vibration aging treatment method of copper-aluminum-silicon nano alloy material and application of vibration aging treatment method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0057] (1) Ingredients of Cu-Al-Si alloy,

[0058] Cut pure copper into φ50mm×100mm rods, pre-treat with pickling and vacuum drying before use, and control the drying temperature at 110±5°C; cut pure aluminum into 50mm×50mm×30mm small aluminum plates, and use acid before use Washing plus vacuum drying pretreatment, the drying temperature is controlled at 200±5°C; the block size of metal silicon is controlled at 5-30mm, pickling before use to remove surface impurities, and then vacuum drying, the drying temperature is controlled at 180± 5°C. The total weight of ingredients is 20Kg, of which by weight: 22-27.5 parts of silicon, 60-70 parts of copper, 0.5-10 parts of aluminum, 0-5 parts of impurities, impurities include: titanium, cobalt, nickel, manganese, iron, boron , phosphorus, carbon, etc., first add part of the silicon, then add copper and aluminum, then add the remaining silicon, and start heating.

[0059] (2) Smelting of Cu-Al-Si alloy:

[0060] Select the technical ...

Embodiment 2

[0081] Example 2, the composition of the copper-aluminum-silicon alloy is by weight: 27.5-32 parts of silicon, 58-63 parts of copper, 1-11 parts of aluminum, 0-5 parts of other impurities, molten copper - The temperature of the aluminum-silicon alloy is 1550±50°C, other steps and methods are basically similar to those in Example 1, Figure 6-10 Shown, the performance of the final product of this embodiment and embodiment 1 is basically the same.

Embodiment 3

[0082] Example 3, the composition of the copper-aluminum-silicon alloy is by weight: 32-39 parts of silicon, 54-59 parts of copper, 1-8 parts of aluminum, 0-5 parts of impurities, molten copper- The temperature of the aluminum-silicon alloy is 1650 ± 50 ° C, and other steps and methods are basically similar to those in Example 1, Figure 11-20 Shown, the performance of the final product of this embodiment and embodiment 1 is basically the same.

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Abstract

The invention discloses a vibration aging treatment method of a copper-aluminum-silicon nano alloy material and application of the vibration aging treatment method, and belongs to the technical fieldof lithium battery cathode material preparation. To overcome defects of the prior art, the invention provides the vibration aging treatment method of the copper-aluminum-silicon nano alloy material and application of the vibration aging treatment method. According to the technical scheme, the vibration aging treatment method is implemented after a step of vacuum drying after steps of blending, smelting, powdering, separation and screening, dried copper-aluminum-silicon nano alloy powder is subjected to vibration aging treatment, an electromagnetic vibration aging instrument is adopted, the electromagnetic vibration efficiency is 3000-5000Hz, and the vibration time is 24-150 hours; a copper-aluminum-silicon nano alloy comprises the following components in parts by weight: 22-70 parts of silicon, 20-70 parts of copper, 0.5-15 parts of aluminum and 0-5 parts of impurities, and the particle size of the alloy is less than or equal to 80mu m. The vibration aging treatment method can be widely applied to the field of lithium battery cathode materials.

Description

technical field [0001] The invention discloses a copper-aluminum-silicon nano-alloy material vibration aging treatment method and its application, belonging to the technical field of lithium battery negative electrode material preparation. Background technique [0002] New materials and clean energy are both key development directions at the national level. Lithium-ion batteries are currently the most widely used energy storage cells in energy storage technology. Improving the energy storage density of cells is the goal pursued by the world. The energy density of cells is The improvement mainly depends on the development and progress of its positive and negative electrode materials, but it is also related to the progress of the positive and negative electrode current collectors, positive and negative electrode binders, electrolytes and separators of lithium-ion batteries. [0003] The core part of the lithium-ion battery is the positive and negative electrode materials, whic...

Claims

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Application Information

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IPC IPC(8): C22C9/10C22F3/00H01M4/38H01M4/62H01M10/0525
CPCC22C9/10C22F3/00H01M4/38H01M4/386H01M4/626H01M10/0525H01M2004/021H01M2004/027Y02E60/10
Inventor 王宥宏刘忆恩
Owner 산시우테하이머뉴매테리얼스테크놀러지컴퍼니리미티드
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