1. Battery Research Laboratories, Sumitomo Metal Mining Co., Ltd, 17-3 Isoura-cho, Niihama, Ehime, Japan
2. Ichikawa Research Center, Sumitomo Metal Mining Co., Ltd, 18-5, Nakakokubun 3-chome, Ichikawa, Chiba, Japan
3. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira Aoba-ku, Sendai, Miyagi, Japan
4. Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Japan