Binder composition for separation membranes of electrochemical elements and separation membrane for electrochemical elements containing the same
The binder composition for electrochemical element separation membranes, using polyvinyl alcohol-based compounds and acrylic polymer resin, addresses adhesion and resistance issues, enhancing electrode bonding and electrolyte impregnation to improve battery performance and appearance.
JP2026521199APending Publication Date: 2026-06-26LG CHEM LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- LG CHEM LTD
- Filing Date
- 2024-06-19
- Publication Date
- 2026-06-26
Smart Images
Figure 2026521199000001_ABST
Abstract
The present invention provides a composition for a separation membrane of an electrochemical element, a separation membrane containing the same, and an electrochemical element containing the same, which can improve electrode adhesion and adhesion to an olefin polymer porous support while minimizing the content of binder polymers, and at the same time exhibit low resistance and excellent electrolyte impregnation. A binder composition for a separation membrane of an electrochemical element according to one embodiment of the present invention comprises a polyvinyl alcohol-based compound, a binder resin, and an aqueous dispersant, wherein the polyvinyl alcohol-based compound is contained in an amount of 0.01 wt% to 1.5 wt% of 100 wt% of the total solid content in the binder composition, and the binder resin contains at least one particulate acrylic polymer resin.
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