1. Hydrogen Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
2. Division of Energy & Environment Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea
3. Institute of Engineering Thermodynamics, German Aerospace Center (DLR), 70569 Stuttgart, Germany
4. Department of Energy Conversion and Storage, Technical University of Denmark (DTU), Fysikvej 310, 2800 Kgs. Lyngby, Denmark
5. Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-387 Krakow, Poland
6. KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
7. Green School, Korea University, Seoul 02841, Republic of Korea