All-solid-state secondary battery and method for manufacturing the same
By using a laminated body structure of a negative electrode active material precursor and a solid electrolyte layer in an all-solid secondary battery, and compressing the positive electrode active material layer after charging, the problem of insufficient battery capacity and energy density is solved, and a high-performance all-solid secondary battery is realized.
CN113748543BActive Publication Date: 2025-03-21FUJIFILM CORP
10 Cites 0 Cited by
Patent Information
- Application Number
- CN202080023512.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-03-27
- Filing Date
- 2020-03-16
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2040-03-16
AI Technical Summary
Technical Problem
In an all-solid secondary battery, it is difficult to fill the solid electrolyte layer into the holes generated in the positive electrode active material layer, resulting in insufficient battery capacity and energy density.
Method used
The battery capacity and energy density of the battery are improved by making a laminate of a positive electrode active material layer and a solid electrolyte layer containing a negative electrode active material precursor, and compressing the positive electrode active material layer after charging.
Benefits of technology
A fully solid-state secondary battery with high battery capacity and high energy density is realized, avoiding the damage of the solid electrolyte layer and the generation of dendrites.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention provides a method for manufacturing an all-solid-state secondary battery, and an all-solid-state secondary battery manufactured by the manufacturing method. The all-solid-state secondary battery has a solid electrolyte layer containing particles of an inorganic solid electrolyte and a positive electrode active material layer on one surface of the solid electrolyte layer. The manufacturing method of the all-solid-state secondary battery comprises: a process of forming a positive electrode active material layer on one surface of the solid electrolyte layer using a positive electrode composition containing a positive electrode active material and a negative electrode active material precursor; a process of charging a stack including the formed positive electrode active material layer and the solid electrolyte layer; and a process of compressing at least the positive electrode active material layer by applying pressure.
Need to check novelty before this filing date? Find Prior Art