1. Advanced Batteries Research Center, Korea Electronics Technology Institute, Seongnam, Gyeonggi 463-816, Republic of Korea
2. Department of Chemical
and Biological Engineering, Korea University, Seoul 136-701, Republic of Korea
3. Department of Chemical Engineering, Dong-A University, Busan 604-714, Republic of Korea
4. Cheorwon Plasma Research Institute, Cheorwon, Gangwon 269-802, Republic of Korea
5. Green School, Korea University, Seoul 136-701, Republic of Korea
6. School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea