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전고체 배터리 모델링 변수 값을 도출하기 위한 전기화학적 임피던스 분석
박서완(Seowan Park),문장혁(Janghyuk Moon) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Recently, all-solid-state batteries (ASSBs) have received a lot of attention to solve the safety issues of commercial lithium-ion batteries and to achieve larger capacity. To design ASSBs, a physics-based model is needed. However, parameters for the ASSBs model are insufficient and difficult to obtain from experiments. To demonstrate this challenge, the electrochemical impedance spectroscopy (EIS) was used. The EIS from the ASSBs models was matched with the EIS of experimental results using the least square fitting. Based on the fitted values of ASSBs model, we analyzed the performance of ASSBs under various design conditions. This work can give good design guidance for ASSBs.