1. Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education) College of Physics Jilin University Changchun 130012 P. R. China
2. Institute for Materials Discovery University College London London WC1E 7JE UK
3. Graduate School of Life Sciences Ritsumeikan University Kusatsu Shiga 525-8577 Japan
4. Department of Medical Bioscience Nagahama Institute of Bio-Science and Technology Nagahama Shiga 526-0829 Japan