Finishing tapes for all-solid-state rechargeable batteries and all-solid-state rechargeable batteries

WO2026155285A1PCT designated stage Publication Date: 2026-07-23SAMSUNG SDI CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SAMSUNG SDI CO LTD
Filing Date
2025-02-20
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

Lithium-ion batteries using flammable organic solvents pose safety risks such as explosion or fire due to collisions or penetrations, and all-solid-state secondary batteries using solid electrolytes need protection against overheating and collisions to ensure stability and safety.

Method used

A finishing tape for all-solid-state secondary batteries incorporating a substrate layer with an adhesive layer containing a fire extinguishing capsule that releases a fire extinguishing agent upon temperature rise, preventing ignition or explosion.

Benefits of technology

The finishing tape effectively suppresses or delays ignition and explosion in all-solid-state secondary batteries by releasing a fire extinguishing agent, ensuring excellent stability and safety while maintaining battery performance.

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Abstract

The present invention relates to finishing tapes for all-solid-state rechargeable batteries and all-solid-state rechargeable batteries comprising same, each finishing tape comprising a base layer and an adhesive layer disposed on the base layer, wherein at least one of the base layer and the adhesive layer contains fire-extinguishing capsules in an amount of 20 wt% to 50 wt%.
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