1. Battery Research Laboratories. Sumitomo Metal Mining Co., Ltd., 17-3 Isoura-cho, Niihama, Ehime 792-0002, Japan
2. School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
3. Department of Computer-Aided Engineering and Development, Sumitomo Metal Mining Co. Ltd., Ome, Tokyo 198-8601, Japan