Production method of composite lithium ribbon

Abstract

The invention discloses a production method of a composite lithium ribbon. Roll forming is adopted, a protection film is adopted to cover a lithium ribbon or a lithium alloy ribbon during rolling, and the protection film, the lithium ribbon or the lithium alloy ribbon and a current collector synchronously run during roll production. A rolling machine is adopted for roll forming and provided with a rack, an upper roller and a lower roller are mounted on the rack, a current collector unwinding device, a lithium ribbon unwinding device and a protection film unwinding device are arranged on the upper reach of the rollers, an unwinding guide roller is arranged on the lower reach of the protection film unwinding device, a composite lithium ribbon winding device and a protection film winding device corresponding to the protection film unwinding device are arranged on the lower reach of the rollers, and a winding guide roller is arranged on the uppe reach of the protection film winding device. Rolling technology is adopted, the protection film is adopted to protect the lithium ribbon or the lithium alloy ribbon in the process of production, automatic roll production can be realized, small-amount piece production can be realized, production efficiency can be improved greatly, and product quality is well guaranteed.

Description

Technical field [0001] The invention belongs to the field of lithium ion secondary batteries, and particularly relates to a production method of a composite lithium belt. Background technique [0002] In recent years, with the demand for high-energy density chemical power supplies from electrical products such as smart phones, tablet computers, and electric vehicles, the requirements for the specific capacity of lithium-ion secondary batteries have also become greater. However, the existing lithium ion secondary batteries are limited by materials and have limited space for specific capacity development. Therefore, there is an urgent need to study high-capacity battery materials. Because of its light weight, large theoretical specific capacity (3860mAh / g), and low electrode potential (-3.045V), lithium composite tape has many advantages as a negative electrode material for high-capacity batteries. Therefore, many research institutes and colleges at home and abroad Colleges and un...

AI Technical Summary

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.

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