Dr. Perumal Elumalai is Professor and Head of Department of Green Energy Technology, Pondicherry University, India. He received his PhD from Indian Institute of Science Bangalore. He had his post-doctoral research at Kyushu University, Japan for more than six years. He was a recipient of a prestigious JSPS fellowship (Japan Society for the Promotion of Science fellowship). He has won special recognition award for Young Ceramist by Ceramic Society of Japan for his contribution to ceramics applications. He has authored more than 80 research papers in reputed international journals including book chapters, two Books, and holds six patents. He has won DST’s consortium grant for about Rs. 1 Cr. He has been recipient of Best Teachers Award from PU consecutively five times. He has guided five PhDs, two Post-docs and several MTech students. He has close collaboration with Mexico, Malaysia and Taiwan. Currently, his H-index is 24. His research work concentrates on batteries, supercapacitors, supercapatteries, fuel cells and emission sensors.