화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.18, No.4, 187-192, April, 2008
DOI10.3740/MRSK.2008.18.4.187  Export Citation
균일 침전법에 의한 MWNT/SnO2 나노복합음극재의 제조
Preparation and Characteristics of MWNT/SnO2 Nano-Composite Anode by Homogeneous Precipitation Method
한원규, 좌용호1, 오승탁2, 조진기3, 강성군†
  • 한양대학교 신소재공학부
  • 1한양대학교 정밀화학공학과
  • 2서울산업대학교 신소재공학과
  • 3한국 산업기술 대학교 신소재 공학부
Won-Kyu Han, Yong-Ho Choa1, Sung-Tag Oh2, Jin-Ki Cho3, and Sung-Goon Kang†
  • Division of Materials Science and Engineering, Hanyang University, Seoul 133-791, South Korea
  • 1Department of Fine Chemical Engineering, Hanyang University, Ansan 426-791, Korea
  • 2Department of Materials Science and Engineering, Seoul National University of Technology, Seoul 139-743, Korea
  • 3Department of advanced materials Engineering, Korea Polytechnic University, 2121 Siheung, Kyonggi-do, krea, Korea
E-mail:
Multi-walled carbon nanotube (MWNT)/SnO2 nano-composite (MSC) for the anode electrode of a Li-ion battery was prepared using a homogeneous precipitation method with SnCl2 precursors in the presence of MWNT. XRD results indicate that when annealed in Ar at 400oC, Sn6O4(OH)4 was fully converted to SnO2 phases. TEM observations showed that most of the SnO2 nanoparticles were deposited directly on the outside surface of the MWNT. The electrochemical performance of the MSC electrode showed higher specific capacities than a MWNT and better cycleability than a nano-SnO2 electrode. The electrochemical performance of the MSC electrode improved because the MWNT in the MSC electrode absorbed the mechanical stress induced from a volume change during alloying and de-alloying reactions with lithium, leading to an increase in the electrical conductivity of the composite material.
Keywords:MWNT/SnO2 nano-composite;battery;anode;SnO2
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