1. Higher Institution Centre of Excellence (HICoE), UM Power Energy Dedicated Advanced Centre (UMPEDAC), Level 4, Wisma R&D, University of Malaya, Jalan Pantai Baharu, 59990 Kuala Lumpur, Malaysia
2. Research Centre for Nano-Materials and Energy Technology (RCNMET), School of Science and Technology, Sunway University, No. 5, Jalan University, Bandar Sunway, Petaling Jaya, 47500, Selangor, Malaysia
3. Sekolah Menengah Kebangsaan Ulu Tiram, Jalan Tiram Baru, 81800 Ulu Tiram, Johor, Malaysia
4. Centre for Ionics University of Malaya (CIUM), Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia