1. Hydrogen Isotope Research Center, Organization for Promotion of Research, University of Toyama, Gofuku 3190, Toyama 930-8555, Japan
2. Nissan Arc. Ltd., 1 Nakashima-cho, Yokosuka, Kanagawa 237-0061, Japan
3. Japan Aerospace Exploration Agency (JAXA), 7-44-1 Jindaiji-higashi-machi, Chofu, Tokyo 182-8522, Japan
4. Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan
5. SOKENDAI, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan
6. Department of Material Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, Japan
7. Faculty of Sustainable Design, University of Toyama, Gofuku 3190, Toyama 930-8555, Japan