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제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and characterization of Silicon/reduced Graphene oxide composite film as anode for lithium ion batteries

2016년 8월 24일 10시 01분 40초
ANAL1.O-19 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
목 10시 : 41분
분석화학 - Oral Presentation of Young Analytical Chemists Ⅰ
저자 및
이상훈, 김용재, 손빛나, 최진영, 이호춘1, 이창섭*
계명대학교 화학과, Korea
1DGIST 에너지시스템공학, Korea
Silicon (Si) has been used as one of the most attractive anode materials for lithium-ion batteries because of its large theoretical capacity, high safety, low cost and environmental benignity. However, Silicon-based anode material needs to overcome the structural change of the solid-electrolyte interphase due to the large volume change during cycling. To resolve these problems, we have synthesized Si/rGO composite using graphene with superior conductivity, large specific surface area and flexibility. The Graphene oxide(GO) solution was deposited on the copper foil for 10 min to form a GO layer. Then the Si-containing solution was deposited for 5 min to form a Si-doped layer. Finally, the multi-layered structure was obtained by depositing GO and Si-doped layers alternately. After heat treatment by thermal chemical vapor deposition(CVD), the resulted Si/rGO composite film on copper foil was obtained. The characteristics of Si/rGO composite were analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The electrochemical characteristics of Si/rGO as anodes of Li ion batteries were investigated using coin cell and battery tester.