1. Department of Urban, Energy, and Environmental Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk 28644, Republic of Korea
2. School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
3. Department of Materials Science and Engineering, Dankook University, Cheonan, Chungnam 31116, Republic of Korea
4. Hydrogen Research Department, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Republic of Korea
5. Clean Fuel Research Laboratory, Climate Change Research Division, Korea Institute of Energy Research, Daejeon 34129, Republic of Korea