1. Department
of Chemical Engineering and Applied Chemistry, Chungnam National University, 220 Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea
2. Institute
of Research and Development, Duy Tan University, R.809, K7/25 Quang Trung, Da Nang 550000, Viet Nam
3. Energy
Storage Research Center, Korea Institute of Science and Technology, P.O. Box 131,
Cheongryang, Seoul 130-650, Republic of Korea