1. School of Materials Science and Engineering Nanyang Technological University (NTU) 50 Nanyang Avenue Singapore 639798 Republic of Singapore
2. Energy Research Institute @NTU (ERI@N) Research Techno Plaza X‐Frontier Block Level 5, 50 Nanyang Drive Singapore 637553 Republic of Singapore
3. School of Engineering, Faculty of Engineering and Physical Sciences University of Southampton Southampton SO17 1BJ UK
4. University of Southampton Malaysia Iskandar Puteri Johor 79200 Malaysia