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Ultrathin metal lithium foil production device and method

A technology of ultra-thin metal and production equipment, which is applied in the direction of electrode manufacturing, electrical components, battery electrodes, etc., can solve the problems of limited space for specific capacity development, achieve the effect of improving production efficiency and ensuring product quality

Pending Publication Date: 2019-05-24
CHINA ENERGY LITHIUM
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Ultrathin metal lithium foil production device and method

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Embodiment Construction

[0013] In order to further understand the content of the invention, features and effects of the present invention, the following embodiments are exemplified and described in detail with the accompanying drawings as follows:

[0014] see figure 1 , an ultra-thin metal lithium foil production device, comprising a rolling mill 3, at least two lithium foil strip unwinding devices 2 are arranged in front of the rolling mill 3, above and below each lithium foil strip unwinding device 2 Each is provided with a lining film strip unwinding device 1; at least two lithium foil strip winding devices 7 are arranged behind the rolling mill 3, and above and below each lithium foil strip winding device 7 are respectively provided A liner tape take-up device 6 .

[0015] In this embodiment, an unwinding tension control device I is provided behind the lithium foil tape unwinding device 2 , and a winding tension control device I is provided in front of the lithium foil tape rewinding device 7 ....

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Abstract

The invention discloses an ultrathin metal lithium foil production device, and the device comprises a rolling mill. At least two lithium foil strip unwinding devices are arranged in front of the rolling mill, and two lining film strip unwinding devices are respectively arranged above and below each lithium foil strip unwinding device. At least two lithium foil strip winding devices are arranged behind the rolling mill, and two lining film strip winding device are respectively arranged above and below each lithium foil strip winding device. The invention further discloses a method for producingthe ultrathin metal lithium foil by adopting the ultrathin metal lithium foil production device. At least two layers of lithium foil are stacked together to be horizontally rolled, and a layer of lining film is arranged on each of the upper surface and the lower surface of each layer of lithium foil. By the adoption of the method, an ultrathin metal lithium electrode strip with the thickness of 0.01 mm or below can be obtained, and automatic coiling production can be achieved, small-batch sheet production can also be conducted, the production efficiency can be greatly improved, the product quality can be well guaranteed, and a foundation is laid for research and development and follow-up production of the high-capacity lithium ion secondary battery.

Description

technical field [0001] The invention belongs to the field of lithium ion secondary batteries, and particularly relates to an ultra-thin metal lithium foil production device and method. Background technique [0002] In recent years, with the demand for high-energy-density chemical power sources for electrical products such as smartphones, tablet computers, and electric vehicles, the specific capacity requirements for lithium-ion secondary batteries are also increasing. However, due to the limitation of materials, the existing lithium-ion secondary batteries have limited development space for specific capacity. Therefore, research on high-capacity battery materials is urgently needed. In addition, due to its light weight, large theoretical specific capacity (3860mAh / g), and low electrode potential (-3.045V), lithium metal has many advantages as a negative electrode material for high-capacity batteries. Turn to the research on secondary batteries with lithium as the negative e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1395H01M4/04
CPCY02E60/10
Inventor 贾振勇贾海涛
Owner CHINA ENERGY LITHIUM
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