Junichiro Otomo / Associate Professor / Division of Environmental Studies
Department of Environment Systems / / energy conversion devices and chemical energy systems

Career Summary
1994: Graduated, Faculty of Engineering, The University of Tokyo
1999: Ph.D. (Engineering) from The University of Tokyo
1999: Research Associate, The University of Tokyo
2003: Lecturer: Kogakuin University
2006: Associate Professor: Kogakuin University
2007: Associate Professor: The University of Tokyo
Educational Activities
Graduate School:
Environmental Material Systems, General course on Environment Systems;
Material Systems Engineering II, General course on Chemical System Engineering.
Faculty of Engineering:
Chemical Engineering: lecture and laboratory II;
Process design: lecture and laboratory.
Other: Nihon University, Graduate School: Special course on chemical engineering II.

Research Activities
Development of environmentally benign energy devices and systems is a current and important issue in terms of energy savings and reduction of CO2 emissions. My present research activities focus on electrochemical reactions and ionic conduction in solid electrolytes with the objective of integrating elemental technologies into new chemical energy conversion devices and systems. Technological applications of advanced ion conductors include fuel cells, secondary batteries, capacitors, ion pumps and chemical sensors. Specifically, our research group is focusing on the first research area. The integration of physicochemical phenomena on different scales is necessary for the construction of novel energy devices and systems; we will investigate these physicochemical (or electrochemical) phenomena from molecular-scale, mesoscopic scale and macroscopic scale perspectives in order to solve energy problems.

1) Junichiro Otomo, Shuqiang Wang, Hiroshi Takahashi and Hidetoshi Nagamoto, "Microstructure Development of Mesoporous Silica Thin Films with Pore Channels Aligned Perpendicularly to Electrode Surfaces and Application to Proton Conducting Composite Electrolyte Membranes", Journal of Membrane Science, 279(1-2), 256-265 (2006).
2) Junichiro Otomo, Takanori Tamaki, Satoru Nishida, Shuqiang Wang, Masaru Ogura, Takeshi Kobayashi, Ching-ju Wen, Hidetoshi Nagamoto, and Hiroshi Takahashi, "Effect of Water Vapor on Proton Conduction of Cesium Dihydrogen Phosphate and Application to Intermediate Temperature Fuel Cell", Journal of Applied Electrochemistry, 35(9), 865-870 (2005).
3) Junichiro Otomo, Hitoshi Shigeoka , Hidetoshi Nagamoto, and Hiroshi Takahashi, "Phase Transition Behavior and Protonic Conduction Mechanism in Cesium Hydrogen Sulfate/Silica Composite" Journal of Physics and Chemistry of Solids, 66(1), 21-30 (2005).
4) Junichiro Otomo, Xiaoen Li, Takeshi Kobayashi, Ching-ju Wen, Hidetoshi Nagamoto, Hiroshi Takahashi, "AC Impedance Spectroscopy of Anodic Reactions with Adsorbed Intermediates: Electro-oxidations of 2-Propanol and Methanol on Carbon-supported Pt Catalyst" Journal of Electroanalytical Chemistry, 573(1), 99-109 (2004).

Other Activities
The Society of Chemical Engineers, Japan
The Electrochemical Society of Japan
The Chemical Society of Japan
The SOFC Society of Japan

Future Plan
Creation and evaluation of new energy-saving systems are important issues, as is the development of elemental technologies. As a member of the Department of Environment Systems, our group is focusing our efforts to creating new approaches for integrating energy-saving systems through collaborations with other researchers and companies.

Messages to Students
To solve complex issues, such as environment and energy problems, it is effective to think of systems consisting of various elements as targets. Through research activities, I hope that you will learn a systematic approach that you may then apply to various issues in the future.