Heat treatment method for solid electrolyte thin film and lithium core structure

Abstract

The invention relates to the technical field of lithium batteries, and provides a heat treatment method for a solid electrolyte thin film and a lithium core structure. The heat treatment method for the solid electrolyte thin film comprises the following steps: providing a to-be-treated solid electrolyte thin film with a certain thickness, wherein the to-be-treated solid electrolyte thin film is formed on an electrode structure; carrying out heat treatment on the to-be-treated solid electrolyte thin film by using a pulse light source with specific pulse parameters for a preset time; and coolingthe solid electrolyte thin film after the solid electrolyte thin film is subjected to heat treatment. The to-be-treated solid electrolyte thin film is subjected to heat treatment by the pulse light source with the specific pulse parameter, the to-be-treated solid electrolyte thin film has good absorption performance on photons transmitted from the pulse light source, the temperature of the to-be-treated solid electrolyte thin film is increased, therefore, the crystalline phase structure of the to-be-treated solid electrolyte thin film is changed, then the bulk phase and the grain boundary resistance of the solid electrolyte thin film are changed to improve the conduction property of conductive ions on the solid electrolyte thin film after the solid electrolyte thin film is subjected to heat treatment, and the electric conduction property is improved.

Description

【Technical field】 [0001] The invention relates to the technical field of lithium batteries, in particular to a heat treatment method for a solid electrolyte film and a lithium battery core structure. 【Background technique】 [0002] In the process of preparing lithium batteries, it is necessary to treat the solid electrolyte film according to actual needs. Among them, the heat treatment technology can change the characteristics of the solid electrolyte film, reduce the grain boundary impedance of the solid electrolyte film, thereby improving the conduction of conductive lithium ions; secondly, the heat treatment technology can also improve the interface contact performance between the solid electrolyte film and the electrode. Improve and reduce interface impedance, thereby improving battery performance. [0003] The existing technology mainly uses a heater to heat the solid electrolyte film. Due to the uncontrollability of the heating process, it is easy to have a great impa...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the current problem that the capacity retention rate and structural stability of the electrode material are reduced when the solid electrolyte film is heated, the present invention provides a lithium battery that can realize rapid heat treatment of the solid electrolyte film and maintain the conductivity of the electrode material well. Heat treatment method for battery solid electrolyte film

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