| 학회 | 한국재료학회 |
| 학술대회 | 2014년 봄 (05/15 ~ 05/16, 창원컨벤션센터) |
| 권호 | 20권 1호 |
| 발표분야 | C. 에너지/환경 재료(Energy and Environmental Materials) |
| 제목 | Characterization of Nd-doped Sr2FeMoO6-δ as anode for SOFCs |
| 초록 | Solid oxide fuel cells (SOFCs) are electrochemical devices which converts chemical energy directly into electricity by means of an electrochemical reaction between fuel and oxidant. The state-of-the-art anode material for SOFCs is nickel-yttria stabilized zirconia (Ni-YSZ) cermet. However, there are certain disadvantages related to the use of Ni-cermets in direct reforming SOFCs; in particular those related to carbon deposition, sulfur poisoning, agglomeration of Ni particles and volume instability upon redox cycling. The current researches on the SOFCs are mostly concerned for development of non-nickel cermet anode to use hydrocarbon fuel. In this work, double perovskite based Sr2FeMoO6-δ (SFM) and Nd-doped Sr2FeMoO6-δ (NSFM) have been investigated as anode materials. Electrical conductivity was measured by DC 4-probe method under H2 and CH4 atmospheres. The phase and morphology of SFM and NSFM were investigated by X-ray diffraction (XRD), filed emission scanning electron microscopy (FESEM) with EDX, respectively. The synthesized powders were then screen-printed onto LSGM pellets using organic ink-vehicle. The catalytic activities of SFM (or NSFM) were evaluated by symmetry cell configuration SFM||LSGM||SFM, using AC-impedance spectroscopy under humidified H2 and CH4 in the temperature range of 700~800℃. The single cell SFM||LSGM||LSCF-GDC were also fabricated and the electrochemical performance was evaluated under humidified H2 and CH4 in the temperature range of 700~800℃. |
| 저자 | Ji-Hoon Koo1, Manasa K. Rath2, Yoon-Tae Park3, Sam-Hyun Kim2, Ki-Tae Lee3 |
| 소속 | 1Division of Advanced Materials Engineering, 2Chonbuk National Univ., 31Division of Advanced Materials Engineering |
| 키워드 | SOFC; Anode; Double perovskite; SFM; Impedance spectroscopy; Cell performance |
