| 학회 | 한국화학공학회 |
| 학술대회 | 2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 | 15권 1호, p.1026 |
| 발표분야 | 촉매 및 반응공학 |
| 제목 | Sn/Ni-YSZ SOFC anode catalysts with minimized coking for methane fuel |
| 초록 | Direct conversion of hydrocarbon fuels at the anodes in solid oxide fuel cell(SOFC) has received a great attention for efficient conversion of chemical energy to electric power. Its major problem is a significant carbon deposition on the anodes. The Ni-YSZ anode, which is a composite of Ni metal and yttria-stabilized zirconia, is the most common in SOFCs with H2 as a fuel. However, it is not suitable for direct utilization of dry hydrocarbon fuels because Ni catalyzes the decomposition of hydrocarbon and causes serious carbon deposition. Here, we prepared Sn doped Ni-YSZ and showed that the doping significantly reduce the coking. When the Sn doped Ni-YSZ anodes were exposed to methane at 800℃, the amount of carbon deposition on the anode decreased. In this work, anode supported electrolytes were fabricated by performing dip-coating of electrolyte YSZ slurry on pressurized anode pellet composed of Sn/NiO/YSZ powder and sintering at 1400oC for 3h. The LSM-YSZ cathode was coated on the anode-supported electrolyte by the screen printing method. The power density of anode supported unit cells prepared in this work were evaluated and long term stability was tested for methane fuel. |
| 저자 | 간 혁, 이현주 |
| 소속 | 연세대 |
| 키워드 | SOFC; hydrocarbon; carbon deposition |
| 원문파일 | 초록 보기 |
