1. Faculty of Bioscience Nagahama Institute of Bio-Science and Technology Nagahama Shiga 526-0829 Japan
2. Graduate School of Life Sciences Ritsumeikan University Kusatsu Shiga 525-8577 Japan
3. Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics Jilin University Changchun 130012 PR China
4. Faculty of Science and Engineering Kindai University Higashi-Osaka Osaka 577-8502 Japan