Synthesis of functionalized PEO derivatives based solid polymer electrolytes via ring anionic polymerization and click reaction for Li-ion batteries
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초록
내용
As the use of lithium batteries in electronic devices has increased, there has been much increasing attention on the development of highly stable electrolytes. PEO-based solid polymer electrolytes are the most studied due to diverse advantages such as high chain flexibility, low Tg and so on. But, in case of linear PEO, As the temperature is decreased to room temperature, ion conductivity is sharply decreased because of crystallization. The synthesize of grafted PEO is one of the way to overcome these problem. In this study, we synthesized grafted PEO functionalized by high dielectric constant group via anionic polymerization and click reaction. Not only can this polymer prevent crystallization, it can also increase ion conductivity by helping dissociation of lithium salt. Further, we introduced diels-alder reaction to make solid state electrolytes which have self-healing property via crosslinking.