In-situ Polymerized Solid-State Electrolytes with Molecular Weight-Controlled Crosslinkers for Stable Lithium Metal Anodes
발표자
주현준 (성균관대학교)
연구책임자
김수찬 (성균관대학교)
공동저자
주현준 (성균관대학교), 김수찬 (성균관대학교)
초록
내용
Polydioxolane (PDOL)-based solid-state electrolytes prepared via in situ polymerization have attracted attention for lithium metal batteries due to their favorable ionic transport properties. However, insufficient mechanical stability limits their practical application and cycling durability. In this work, poly(ethylene glycol) diglycidyl ether (PEGDE) is introduced as a crosslinker, where its polyether backbone facilitates lithium-ion coordination and diglycidyl groups enable uniform crosslinking with PDOL via situ ring-opening polymerization, forming a 3D polymer network. PEGDE crosslinkers with different molecular weights are employed to systematically compare ion transport pathways while maintaining similar crosslink density. The optimized crosslinked structure effectively suppresses lithium dendrite growth and enhances electrochemical stability, demonstrating that molecular weight-controlled in situ crosslinking is a promising strategy for stable lithium metal batteries.