Composition for forming coating layer, separator using same, and electrochemical device comprising same

A coating layer composition with inorganic particles, a polymer binder, and a maleic acid monomer addresses uniformity and heat resistance issues in electrochemical devices, enhancing dispersibility and reducing defects for improved battery performance.

WO2026089549A1PCT designated stage Publication Date: 2026-04-30LG ENERGY SOLUTION LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-10-24
Publication Date
2026-04-30

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Abstract

An electrochemical device separator of the present invention comprises: a porous polymer substrate; and a coating layer which is provided on at least one surface of the porous polymer substrate and which includes inorganic particles, a polymer binder and a dispersant. The coating layer is formed of a coating layer composition, wherein the coating layer composition includes inorganic particles, a polymer binder and a dispersant, the dispersant including a maleic acid monomer.
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Citation Information

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