- 균일 침전법에 의한 MWNT/SnO2 나노복합음극재의 제조
- ㆍ 저자명
- 한원규,좌용호,오승탁,조진기,강성군,Han. Won-Kyu,Choa. Yong-Ho,Oh. Sung-Tag,Cho. Jin-Ki,Kang. Sung-Goon
- ㆍ 간행물명
- 한국재료학회지
- ㆍ 권/호정보
- 2008년|18권 4호|pp.187-192 (6 pages)
- ㆍ 발행정보
- 한국재료학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Multi-walled carbon nanotube (MWNT)/$SnO_2$ nano-composite (MSC) for the anode electrode of a Li-ion battery was prepared using a homogeneous precipitation method with $SnCl_2$ precursors in the presence of MWNT. XRD results indicate that when annealed in Ar at $400^{circ}C$, $Sn_6O_4(OH)_4$ was fully converted to $SnO_2$ phases. TEM observations showed that most of the $SnO_2$ 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-$SnO_2$ 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.