On the Role of Bimetal‐Doped BaCoO3−𝛿 Perovskites as Highly Active Oxygen Electrodes of Protonic Ceramic Electrochemical Cells (Adv. Energy Mater. 14/2024)

Electrochemical Cells In article number 2304059, Sun-Ju Song, Chan-Woo Lee,WooChul Jung, Kang Taek Lee, and co-workers unveil the role of bimetal-doped BaCoO3−𝛿 (BCO) for highly active oxygen electrodes of protonic ceramic electrochemical cells. Through bimetal doping, the hexagonal structure of BCO is transformed into a cubic perovskite, leading to improved transport of all charge carriers (H+/O2−/e−).