Ken-ichi Tanaka received his Ph.D. at the Tokyo Institute of Technology. After becoming an associate professor at Hokkaido Univerisity and then at The University of Tokyo, he was a professor at The University of Tokyo. He now is professor emeritus at the University and a guest professor in the Research Center for Eco-Environmental Sciences, the Chinese Academy of Sciences; and honorary director at the Institute of Materials and Electrochemistry, the University of Science and Technology.Ken-ichi Tanaka has received the Academic Award of the Chemical Society of Japan, the Award of the Surface Science Society of Japan, and the Award of the Catalysis Society of Japan.He is an editorial board member of the Journal of Catalysis.