Affiliation: | 1. Fuel cell Research Center, Korea Institute of Science and Technology (KIST), 39-1 Hawolgok-dong, P.O. Box 131, Seongbuk-gu, Cheongyang, Seoul 130-650, South Korea;2. School of Chemical & Biological Engineering and Institute of Chemical Process, Seoul National University, San 56-1, Shillim-dong, Kwanak-ku, Seoul 151-744, South Korea;3. Corporate R&D Center, LG Chem, Ltd., Munji-dong, Yuseong-gu, Daejeon 305-380, South Korea |