Solid secondary battery and method for manufacturing it

DE602024005571T2Active Publication Date: 2026-06-24SAMSUNG SDI CO LTD
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Patent Information

Application Number
DE602024005571
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2023-08-17
Filing Date
2024-02-07
Publication Date
2026-06-24
Estimated Expiration
2044-02-07

AI Technical Summary

Technical Problem

Lithium batteries using liquid electrolytes are prone to overheating and flammability risks, necessitating the development of solid secondary batteries with improved safety and stability.

Method used

A solid secondary battery design incorporating a cathode layer with a composite cathode active material comprising M2S, an alkali metal salt, and a two-dimensional carbonaceous structure, such as graphene, to enhance electronic conductivity and mitigate volume changes during charging and discharging.

Benefits of technology

The composite cathode active material improves the battery's initial efficiency, energy density, and lifespan characteristics by maintaining a robust electronic conduction network and reducing internal resistance.

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