Hironori Nakajima received his B.S. degree in Engineering Science, and M.S. and Ph.D. degrees in Energy Science from Kyoto University. He has been an assistant professor in the Department of Mechanical Engineering at Kyushu University since 2006. He was a visiting scholar in the Department of Mechanical Engineering at the University of California, Berkeley in 2011. He was a visiting scientist in the Department of Mechanical and Process Engineering at the Swiss Federal Institute of Technology, Zürich in 2012. His research interests are heat and mass transfers, electrochemical analyses, and diagnosis of fuel cells and batteries. Dr. Nakajima is a member of the Electrochemical Society, the Japan Society of Mechanical Engineers, and the Electrochemical Society of Japan. Dr. Nakajima also serves as a reviewer for several peer-reviewed journals, including Journal of Power Sources and International Journal of Hydrogen Energy.