a
Department of Materials Science and Engineering, Seoul National University, Seoul 151-742, Korea
E-mail: hjsohn@snu.ac.kr
;
Fax: +82-2-885-9671
;
Tel: +82-2-880-7226
b
School of Advanced Materials & System Engineering, Kumoh National Institute of Technology, Gumi, Korea
c
Advanced Batteries Research Center, Korea Electronics Technology Institute, Seongnam, Korea
d
Development Team, Battery Business Division, Samsung SDI, Cheonan, Korea