1. Material Integration Laboratories, AGC Inc., Yokohama 230-0045, Japan
2. Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, Kofu 400-8511, Japan
3. Innovative Technology Laboratories, AGC Inc., Yokohama 230-0045, Japan
4. Hydrogen and Fuel Cell Nanomaterials Center, University of Yamanashi, Kofu 400-0021, Japan