Nano-LaCoO3 infiltrated BaZr0.8Y0.2O3− electrodes for steam splitting in protonic ceramic electrolysis cells

Protonic ceramic electrolysis cell (PCEC) is a promising technology for production of pure dry hydrogen due to the low operating temperature and high efficiency. One obstacles commercialization PCEC poor performance insufficient long-term durability oxygen electrode. In this study, we address above challenge by designing LaCoO3 (LC) catalyst infiltrated porous BaZr0.8Y0.2O3−δ (BZY20) backbone electrode (LC-BZY20). The LC-BZY20 are investigated on symmetrical cells using electrochemical impedance spectroscopy (EIS). total polarization resistance (RP) values 0.56, 1.24, 2.18, 2.90 Ω cm2 in 3 ​vol% humidified synthetic air at 600, 550, 500, 450 ​°C, respectively, indicating good Furthermore, displays stability, without significant degradation when tested 600 ​°C 10 900 ​h. We further study influence partial pressure (Po2) steam (PH2O) response EIS data, propose set chemical processes involved splitting reaction