High‐Performance and Durable Fuel Cells using Co/Sr‐Free Fluorite‐Based Mixed Conducting (Pr,Ce)O _2‐δ Cathode (Adv. Energy Mater. 43/2022)

Fuel Cells In article number 2202101, Ji-Won Son, WooChul Jung, and co-workers demonstrate high-performance and durable solid oxide fuel cells by employing a Co/Sr-free fluorite-based mixed conducting (Pr,Ce)O2−δ cathode, delivering outstanding oxygen reduction reaction activity, importantly, together with a much extended long-term stability. A vertically-ordered columnar structure exhibits a record-low area-specific resistance and also imposes power output, highly competitive to those of other benchmark oxides.