Anode, Composition for Anode Dam Coating, and Lithium Secondary Battery

DRIVE April 23, 2026
Source
A composition for coating a negative electrode dam includes an aqueous binder, wherein the aqueous binder includes one or two or more compounds selected from the group consisting of polyacrylamide (PAM), polyvinyl alcohol, polyacrylic acid, polyethylene glycol, and polyacrylonitrile. The composition for coating a negative electrode dam may also include a cellulose-based compound and inorganic particles. A surface tension of the composition suppresses the occurrence of a fat-edge in the negative electrode. Furthermore, the dam coating layer formed from the composition for coating a negative electrode dam shortens the sliding length of the negative electrode active material layer, thereby reducing the risk of NP-ratio inversion of the lithium secondary battery.

Discussion in the ATmosphere

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