LSM‐YSZ Cathode with Infiltrated Cobalt Oxide and Cerium Oxide Nanoparticles

Abstract

Abstract To improve the La 0.8 Sr 0.2 MnO 3 (LSM) –8 mol‐%Y 2 O 3 ‐ZrO 2 (YSZ) cathode performance of intermediate temperature solid oxide fuel cells (SOFC), Co 3 O 4 and CeO 2 nanoparticles were infiltrated into the cathode. Co‐infiltration of these oxide particles drastically enhanced the cell performance between 800 and 600 °C. The infiltrated CeO 2 suppressed the aggregation of nanoparticle Co 3 O 4 , resulting in the high catalytic activity of the nanoparticle Co 3 O 4 for oxygen reduction at intermediate temperatures. The anode‐supported SOFC with Co 3 O 4 and CeO 2 co‐infiltrated LSM‐YSZ cathode at 700 °C showed the high specific power density of 0.58 W cm –2 at 0.7 V.