P-4-1 燃料極触媒への化学種添加が固体酸化物形燃料電池の電気化学性能に及ぼす影響

抄録

Influences of oxide additives and its content to nickelous anode catalyst for a SOFC on electrochemical performance is evaluated by electrochemical impedance spectroscopy and temperature programed reduction. Influence of oxide additives and its content on ohmic resistance is negligible. Whereas, activation resistance is influenced by the additive and its content. In the range of this study, the activation resistance of both 10TiNi and 5MnNi is higher than that of 30CeNi. Temperature programed reduction analysis showed that the interaction between nickel, and titania and magnesia is higher than that between nickel and ceria. Strong interaction like SMSI (Strong metal-support interaction defined by Tauster) may be one of the potential mechanisms of enlarging activation resistance.