A kind of heat treatment method of solid electrolyte thin film and lithium cell structure

Abstract

The invention relates to the technical field of lithium batteries, and relates to a heat treatment method for a solid electrolyte film and a lithium battery core structure. A heat treatment method for a solid electrolyte film, comprising the steps of: providing a solid electrolyte film to be processed with a certain thickness, the solid electrolyte film to be processed is formed on an electrode structure; using a pulse light source with specific pulse parameters to treat the solid state electrolyte film to be processed The electrolyte film is heat-treated for a predetermined time; the heat-treated solid electrolyte film is cooled. A pulse light source with specific pulse parameters is used to heat-treat the solid electrolyte film to be treated. The solid electrolyte film to be treated has better absorption performance for the photons emitted by the pulse light source, and the temperature of the solid electrolyte film to be treated is increased, thereby changing the solid electrolyte film to be treated. The crystal phase structure, and then change the bulk phase and grain boundary impedance of the solid electrolyte film, so as to improve the conductivity of the conductive ion in the solid electrolyte film after heat treatment, and improve the conductivity.

Description

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

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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