Abstract
The electrochemical performance of solid oxide fuel cells (SOFCs) based on perovskite-type materials (ABO 3) was investigated. La 0.9Sr 0.1Ga 0.8Mg 0.2O 3− δ (LSGM) ceramics were used as electrolyte and a composite containing La 0.8Sr 0.2MnO 3 (LSM) as cathode. Ba 0.5Sr 0.5Co 0.8Fe 0.2O 3− δ (BSCF) was also used as cathode and La 0.75Sr 0.25Cr 0.5Mn 0.5O 3− δ (LSCM) as anode materials. Furthermore, fluorite-type Sm 0.15Ce 0.85O 2− δ (SDC) material was used as buffer layer between the electrolyte and the anode to avoid possible interfacial reactions. The maximum power density value of BSCF/LSGM/LSCM with 1.5 mm thick electrolyte supported cell was 160 mW cm −2 at 1073 K, using moist H 2 diluted with N 2 as fuel and air as oxidant.
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