The processing improvement and performance analysis of the La0.85Sr0.15Ga0.8Mg0.2O2.825 electrolyte-supported fuel cell

• Main Authors: Wei-Han Huang, 黃洧瀚
• Other Authors: Yu-Chuan Wu
• Format: Others
• Online Access: http://ndltd.ncl.edu.tw/handle/4p4gp5

碩士 === 國立臺北科技大學 === 材料科學與工程研究所 === 104 === It is known that the La1−xSrxGa1−yMgyO3−δ electrolyte material has the highest conductivity among solid electrolytes. The La0.85Sr0.15Ga0.8Mg0.2O2.825(LSGM1520), La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF6428), La0.4Ce0.6O1.8 (LDC46) and Ce0.8Sm0.2O1.9 (SDC20) powders were synthesized by the solid-state reaction. The LSCF/LSGM/SDC+Ni (Cell A), LSCF/LSGM/porous LSGM/SDC+Ni (Cell B), and LSCF/LSGM/LDC/SDC+Ni (Cell C) cells were prepared in the study. The LDC and porous LSGM layers were used as a buffer layer and an anode functional layer, respecti vely. The two interlayers were effective to reduce the electrode polarization resistance and further to improve the adhesion between electrolyte and anode so as to enhance the power performance.The performances and properties of electrolyte-supported cells were analyzed by XRD, SEM, electrochemical instrument and AC impedance spectroscopy. Finally, the performances and properties of degradation in these cells were also further carried out for the long-term durability testing.