Application of separator to lithium-ion batteries through amphiphilic polymer
발표자
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초록
내용
In recent years, many research on various energy storage devices is increasing, and research on lithium-ion batteries is also actively underway. Among them, cathodes, electrolyte, and seperator are being studied to solve the stability problem of Li ion battery, and this study aims to improve the stability through seperator. The goal of this study was to synthesize a amphiphilic polymer suitable for use in the seperator of lithium batteries. Through ATRP reaction, hydrophilic monomer was polymerized in hydrophobic backbone to synthesize grafted polymer, and these structure improve the movement of Li ion within the separator and inhibit the formation of Li dendrite, showing the stability improvement. PVDC was used for backbone and PHEMA was used for monomer. Composition was confirmed through FT-IR, GPC, and NMR, and CV and GCD measurements were performed by applying them to battery cells using Li metal to measure electrochemical performance after manufacturing the seperator.