Method for producing ultra-thin metal lithium strip

A technology of ultra-thin metals and production methods, applied in the direction of metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of limited space for specific capacity development, achieve the effect of improving production efficiency and ensuring product quality

Inactive Publication Date: 2017-08-18
CHINA ENERGY LITHIUM
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  • Abstract
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Problems solved by technology

However, due to the limitation of materials, the existing lithium-ion secondary batteries have limited space for specific capacity development. Therefore, it is urgent to study high-capacity battery materials.

Method used

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  • Method for producing ultra-thin metal lithium strip

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Embodiment Construction

[0017] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0018] see figure 1 , a kind of production method of ultra-thin metal lithium strip, adopts the following steps: 1) coating lubricant on the base material surface, the base material surface is processed, to avoid sticking with roll when rolling. The thickness of the substrate may be 0.1 mm.

[0019] 2) Rolling.

[0020] 3) trimming.

[0021] 4) Clean the oil on the surface of the lithium belt.

[0022] 5) Air-dry the lithium strip and remove surface impurities to obtain an ultra-thin metal lithium strip.

[0023] The above-mentioned production method has relatively strict requirements on the relative humidity of the environment, preferably below 1%. After rolling, the lithium strip is cleaned and dried to ensure that the surface of the m...

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Abstract

The invention discloses a method for producing an ultra-thin metal lithium strip. The method includes the following steps that (1) the surface of a base material is coated with a lubricating agent; (2) rolling is conducted; (3) edge cutting is performed; (4) oil stains on the surface of the lithium strip are cleaned; and (5) the lithium strip is subjected to air drying, and surface impurities are removed. By the adoption of the method, the rolling technology is adopted, the base material is subjected to surface treatment before rolling, cleaning and air drying are carried out after rolling, the thickness of the obtained ultra-thin metal lithium battery strip can reach 0.02mm or below, and the lithium strip is mainly applied to high-capacity secondary batteries like a lithium-sulfur battery, a lithium air battery, a lithium negative electrode full-solid-state battery, a lithium polymer battery and other secondary batteries using lithium as the negative electrode; and automatic coiling production can be achieved, small-batch slicing production can also be conducted, production efficiency can be greatly improved, product quality is well guaranteed, and a foundation is laid for research, development and follow-up production of the high-capacity lithium ion secondary batteries.

Description

technical field [0001] The invention belongs to the field of lithium-ion secondary batteries, and in particular relates to a production method of an ultra-thin metal lithium strip. Background technique [0002] In recent years, with the demand for high-energy-density chemical power sources in electrical products such as smartphones, tablet computers, and electric vehicles, the specific capacity requirements for lithium-ion secondary batteries are also increasing. However, the existing lithium-ion secondary batteries have limited space for specific capacity development due to material limitations. Therefore, it is urgent to study high-capacity battery materials. And because metallic lithium has light weight, large theoretical specific capacity (3860mAh / g), and low electrode potential (-3.045V), it has many advantages as a high-capacity battery anode material. Therefore, many research institutes and colleges at home and abroad have begun to Turn to research on secondary batte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B1/40B21B45/02
CPCB21B1/22B21B1/40B21B45/0239B21B45/0269
Inventor 陈强牟瀚波程滋平贾振勇郇庆娜
Owner CHINA ENERGY LITHIUM
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