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Copper-aluminum-silicon alloy material and application thereof

A technology of silicon alloy materials and alloy materials, applied in nanotechnology for materials and surface science, electrical components, electrochemical generators, etc., can solve the problems of long charge and discharge time, short cycle life, and low efficiency in the first week

Inactive Publication Date: 2018-02-23
산시우테하이머뉴매테리얼스테크놀러지컴퍼니리미티드
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the existing technology has the main problems when using silicon as the negative electrode material: short cycle life, low efficiency in the first week and long charge and discharge time

Method used

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  • Copper-aluminum-silicon alloy material and application thereof
  • Copper-aluminum-silicon alloy material and application thereof
  • Copper-aluminum-silicon alloy material and application thereof

Examples

Experimental program
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Embodiment 1

[0057] Embodiment 1, a copper-aluminum-silicon alloy material is composed of the following parts by weight: 22-27.5 parts of silicon, 60-70 parts of copper, 0.5-10 parts of aluminum, and 0-5 parts of impurities.

[0058] The preparation method of the copper-aluminum-silicon alloy material of the present embodiment is carried out according to the following steps:

[0059] (1) Ingredients of Cu-Al-Si alloy:

[0060] 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, according to the configuration of ...

Embodiment 2

[0080] In this embodiment, a copper-aluminum-silicon alloy material is composed of the following parts by weight: 27.5-32 parts of silicon, 58-63 parts of copper, 1-11 parts of aluminum, and 0-5 parts of impurities. And follow the steps below:

[0081] (1) Ingredients of Cu-Al-Si alloy:

[0082] 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 the ingredients is 20Kg, and the ingredients are as follows: 27.5-32 parts of silicon, 58-63 parts of copper, 1-11 parts of aluminum, 0-5 parts of impurities (including: titani...

Embodiment 3

[0098] The preparation method of the negative electrode material of the lithium ion battery of this embodiment is carried out according to the following steps:

[0099] (1) Ingredients of Cu-Al-Si alloy:

[0100] Cut pure copper into φ50×100mm rods, pre-treat with pickling and vacuum drying before use, and control the drying temperature at 110±5°C; cut pure aluminum into small aluminum plates of 50×50×30mm, 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, and the proportion of ingredients: silicon 32-39%, copper 54-59%, aluminum 2-11%, other elements (titanium, cobalt, nickel, manganese, iron, boron, phosphorus, total carbon ≤ 5%) , first add part of the silicon, then add copper and aluminum, ...

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Abstract

The invention relates to a copper-aluminum-silicon alloy material and application thereof, and belongs to the technical field of alloy material. The defect of the prior art is overcome, and a high-performance copper-aluminum-silicon alloy material of a lithium battery and application of the copper-aluminum-silicon alloy material are provided. The copper-aluminum-silicon alloy material provided bythe technical scheme comprises the following constituents based on parts by weight: 22-70 parts of silicon, 20-70 parts of copper, 0.5-15 parts of aluminum and 0-5 parts of impurity. The copper-aluminum-silicon alloy material can be widely applied to the field of a lithium ion battery negative electrode material.

Description

technical field [0001] The invention relates to a copper-aluminum-silicon alloy material and its application, belonging to the technical field of alloy materials. 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, which directly determine the performance of the battery. Energy density, cycle l...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/38H01M4/46H01M4/62H01M10/0525B82Y30/00
CPCB82Y30/00H01M4/364H01M4/386H01M4/463H01M4/626H01M4/628H01M10/0525Y02E60/10
Inventor 王宥宏刘忆恩
Owner 산시우테하이머뉴매테리얼스테크놀러지컴퍼니리미티드
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