1. Department
of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
2. Department
of Chemical and Biological Engineering, Hanbat National University, Daejeon 305-719, Republic of Korea
3. Battery R & D, LG Chem, Ltd., 104-1 Moonji dong, Yuseong-gu, Daejeon 305-380, Republic of Korea
4. Division
of Advanced Materials Engineering, Kongju National University, Cheonan-daero, Seobuk-gu, Cheonan, Chungnam 331-717, Republic of Korea