화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.49, No.6, 846-850, December, 2011
Export Citation
주석-니켈 나노입자 복합체의 리튬 이차전지 음전극 특성
Anode Properties of Sn-Ni Nanoparticle Composites for Rechargeable Lithium Batteries
김광만†, 강근영, 최민규, 이영기
  • 한국전자통신연구원 융합부품소재부문 전력제어소자팀, 305-700 대전광역시 유성구 가정로 218
Kwang Man Kim†, Kun-Young Kang, Min Gyu Choi, and Young-Gi Lee
  • Research Team of Power Control Devices, Electronics and Telecommunications Research Institute (ETRI), 218 Gajung-ro, Yuseong-gu, Daejeon 305-700, Korea
E-mail:
초록
주석과 니켈 나노입자를 함량별로 혼합하여 습식법으로 리튬 이차전지용 복합체 음전극을 제조하고 그 물성과 전기화학적 특성을 조사하였다. 이 음전극은 초기 방전시 최대 700 mAh g^(-1)의 우수한 방전용량을 나타내었지만 사이클 특성은 심각한 열화를 보였다. 이것은 나노입자간 단순혼합만으로는 전극판의 기공성과 Ni 성분이 충방전에 따르는 Sn 성분의 팽창/수축에 대한 기계적 완충제 역할이 충분하지 않았기 때문이며, 차후 이를 보완하는 나노구조체 Sn-Ni 음전극의 설계와 시험이 필요하다.
Nanocomposite anodes for rechargeable lithium battery are prepared by mixing tin and nickel nanoparticles via wet method and their electrochemical properties are examined. The Sn-Ni nanocomposite anode shows a maximum discharge capacity of 700 mAh g^(-1) at the first cycle but very poor cycle performance. This means that the electrode porosity and the Ni component formed by the simple mixing of nanoparticles no longer play the role of buffering the volume expansion/contraction of Sn component during charge-discharge. To solve the cycle performance problem, a novel nanostructured Sn-Ni anode should be designed and tested.
Keywords:Tin-nickel Composite;Anode Properties;Lithium Secondary Battery
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