Design of Polymeric Binders for Sulfide-based All-Solid-State Batteries
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초록
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Sulfide-based all-solid-state batteries (ASSBs) have been featured as promising alternatives to current lithium-ion batteries, mainly due to their enhanced safety and potential for high energy density. However, sulfide-based ASSB technology remains in the research stage without established manufacturing schemes. In terms of manufacturing, the solution-based process can take advantage of the knowledge and infrastructure inherited from established lithium-ion batteries. Nevertheless, the dilemmatic issue of polarity mismatch among the slurry solvent, solid electrolyte, and binder necessitates attention in the solution processing of sulfide-based ASSBs electrodes. Herein, I developed design strategies for polymeric binders utilizing protection-deprotection chemistry and optimizing the adhesive-elastic unit relationship within a block copolymer. This approach achieved superior binder adhesion to the electrode, thereby enhancing electrochemical performance.