Aluminum foil for 1100C lithium battery and preparation method of aluminum foil

A lithium battery and aluminum foil technology, applied in metal rolling and other directions, can solve the problems of low tensile strength and low elongation of aluminum foil, and achieve the effect of overcoming difficult control of plate shape, high degree of work hardening, and improving tensile strength

Active Publication Date: 2022-04-22
华北铝业新材料科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an aluminum foil for 1100C lithium battery, which solves the problems of low tensile strength and low elongation of the existing aluminum foil

Method used

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  • Aluminum foil for 1100C lithium battery and preparation method of aluminum foil
  • Aluminum foil for 1100C lithium battery and preparation method of aluminum foil
  • Aluminum foil for 1100C lithium battery and preparation method of aluminum foil

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preparation example Construction

[0035] The preparation method of above-mentioned 1100C lithium battery aluminum foil, comprises the following steps:

[0036] S1. Ingredients, weigh the corresponding raw materials according to the composition design. The raw materials include aluminum alloy scrap with a mass percentage not higher than 25%, and the rest of the aluminum is pure aluminum ingots. The use of the aluminum alloy scrap can realize the reuse of the scrap and reduce the material cost.

[0037] S2, smelting, putting the prepared raw materials into a melting furnace for smelting, and refining the aluminum alloy liquid after the raw materials are completely melted. The hydrogen content in aluminum water is less than or equal to 0.12ml / 100gAl, and the refining agent is sprayed into the melt with pure argon for refining, refining in the melting furnace for 1-2 times, and the refining time in the melting furnace is more than 30min / time; refining in a static furnace for 1 time -2 times, the refining time in...

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Abstract

The invention discloses an aluminum foil for a 1100C lithium battery, and belongs to the technical field of aluminum foils for lithium batteries. The aluminum foil for the 1100C lithium battery comprises the following components in percentage by mass: 0.4-0.6% of Si, 0.5-0.8% of Fe, less than or equal to 0.05% of Cu, less than or equal to 0.05% of Mn, less than or equal to 0.03% of Mg, less than or equal to 0.05% of Zn, less than or equal to 0.05% of V, less than or equal to 0.03% of Ti, less than or equal to 0.03% of other single impurity elements and the balance of aluminum. And the mass percent of aluminum is greater than or equal to 98.8%. The invention also discloses a preparation method of the aluminum foil for the 1100C lithium battery. By adopting the aluminum foil for the 1100C lithium battery and the preparation method of the aluminum foil, the problems of low tensile strength and low elongation of the existing aluminum foil can be solved.

Description

technical field [0001] The invention relates to the technical field of lithium battery aluminum foil, in particular to an aluminum foil for a 1100C lithium battery and a preparation method thereof. Background technique [0002] Lithium-ion batteries are more and more widely used in today's society, especially with the increasing environmental pollution and energy crisis, lithium-ion batteries, as a representative of green and renewable energy, play an increasingly important role . In recent years, lithium-ion battery technology used in consumer products such as mobile phones and notebook computers is relatively mature, but lithium-ion batteries that can be used for power and have excellent performance are still the key and difficulty in the development of lithium-ion battery technology. To develop power lithium-ion batteries with high safety, high energy density, high capacity, high power density, and long cycle life, the quality and performance of the key component materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22F1/04B21B1/40C22C1/02C22C1/06
CPCC22C21/00C22C1/026C22C1/06C22F1/04B21B1/40Y02E60/10
Inventor 曹建峰温倩佟颖夏卫华刘建星李晋王庆华张硕李鹏飞刘富强
Owner 华北铝业新材料科技有限公司
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