Oxygen Reduction Reaction at LaNiO_3 Supported by Au Ring in Li/Na Eutectic Carbonate with La_2O_3

摘要

In order to improve the performance of molten carbonates fuelcells, we have investigated the catalytic activity of LaNiO_3 andNiO for the oxygen reduction reaction (ORR) on a meniscuselectrode in Li/Na eutectic carbonates with La oxide. The apparentcurrent density (i_0) of LaNiO_3 was slightly smaller than that of NiO.The partial pressure of CO_2 (pCO_2) and O_2 (pO_2) dependences ofORR were obtained on LaNiO_3 and NiO, and the reactionmechanism of ORR on LaNiO_3 was almost same to that on NiO at923 K.