1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
2. Department of Chemistry, Queen Mary University of London, Mile End Road, London E1 4NS, UK
3. R & D Strategy Division, Tokai Carbon Co., Ltd, Aoyama Building, 1-2-3 Kita Aoyama, Minato-ku, Tokyo 107-8636, Japan
4. Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
5. The Electron Microscopy Centre, Tohoku University, 2-1-1 Katahira, Aoba, Sendai, Miyagi 980-8577, Japan
6. Department of Chemistry, University College London, 2020 Gordon St., London, WC1H 0AJ, UK
7. Digital Environment Research Institute, Queen Mary University of London, Empire House, 67-75 New Road, London E1 1HH, UK