1. Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan
2. International Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
3. Synchrotron Radiation Research Center, National Institutes for Quantum and Radiological Science and Technology, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
4. Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
5. Fuel Cell Cutting-Edge Research Center Technology Research Association, Aomi, Koto, Tokyo 135-0064, Japan
6. Japan Synchrotron Radiation Research Institute (JASRI), Koto, Sayo, Hyogo 679-5198, Japan