1. Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan
2. Fuel Cell Nanomaterials Center, University of Yamanashi, 6-43 Miyamae-cho, Kofu 400-0021, Japan
3. Fuel Cell Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia
4. Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu 400-8510, Japan
5. Department of Applied Chemistry, Waseda University, Tokyo 169-8555, Japan