08MC3300, Development of Sensor Tag and Sensor Node Technologies for RFID/USN,
Cheol Sig Pyo
Abstract
1991년 lithium-ion battery(LIB)가 상용화된 이후, 초기 전해질은 주로 lithium cobalt oxide(LiCoO2) 양극과 graphite 음극의 특성에 집중되어 연구되어 왔다. 또한 전극과 전해질 간의 적합성에 대한 다양한 연구들이 이들 간의 계면에서 활발히 진행되었다. 이후 Si, Sn 등의 비탄소계 음극소재와 3성분(Ni, Mn, Co)계, spinel, olivine 등의 양극 소재를 리튬 2차전지에 채용하려 함에 따라 기존 전해질 재료들도 많은 도전에 직면하게 되었다. 특히, 안전성 문제가 최근심각하게 부각됨에 따라 전해질의 요구특성은 점점 복잡해지고 까다로워지고 있다. 본 고에서는이러한 전극소재 변화에 따른 전해질 소재의 다양한 변화와 그 특성에 대하여 구성요소 별로 연구및 개발 동향을 정리하였다
KSP Keywords
Ion batteries, Lithium cobalt oxide, lithium-ion batteries(LIBs)
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