This article offers a brief introduction of mixed ion-electron conducting (MIEC) perovskite oxides for applications as the cathode material of solid oxide fuel cells, including basic working principle, material synthesis and processing approaches, and electrical and electrochemical characterisation techniques. An overview of the relevant research in 2022 is also presented, mainly focusing on (1) MIEC perovskite oxide surface engineering; (2) new MIEC perovskite oxides with improved stability and high catalytic activity towards oxygen reduction reaction; (3) synthesis and fabrication technique developments.

mixed ionic-electronic conductor  /  perovskite oxide  /  solid oxide fuel cell  /  cathode material