1. Energy Research Institute @ NTU, Nanyang Technological University, Research Techno Plaza, 50 Nanyang Drive, Singapore 637553
2. Interdisciplinary Graduate Programme, Nanyang Technological University, Singapore 637553
3. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
4. Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
5. School of Physical and Mathematical Science, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
6. SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, Korea 16419