1. Buan Fuel Cell CenterNew & Renewable Energy Research DivisionKorea Institute of Energy Research (KIER) 20-41 Sinjaesaengeneogi-ro, Haseo-myeon Buan-gun Jellabuk-do 56332 South Korea
2. Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) 77 Cheongam-Ro, Nam-gu Pohang Gyeongbuk 37673 South Korea
3. Surface Technology DivisionKorea Institute of Materials Science (KIMS) Changwon 641-010 South Korea
4. Carbon Resources InstituteKorea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong-gu Daejeon 34114 South Korea