LSC Infiltrated LSCF Oxygen Electrode for High Temperature Steam Electrolysis

This work is focused on La0.6Sr0.4CoO3-δ (LSC) infiltrated LSCF oxygen electrode for high temperature steam electrolysis aimed at efficient hydrogen production. The electrochemical performance of LSC infiltrated LSCF oxygen electrode is investigated for steam electrolysis and compared with conventional LSCF electrode. In this respect, the symmetrical half-cell as well as single cell containing LSCF oxygen electrode with and without LSC infiltration are characterized using electrochemical impedance spectroscopy in the temperature range 750-900 °C. It is observed that the symmetrical cell as well as single cells with LSC infiltrated LSCF electrode performs slightly better than the conventional LSCF electrode. Degradation experiments were also performed for both symmetrical as well as single cells. Post-test analysis using SEM-EDX was performed to investigate the changes of electrode and electrode/electrolyte interface microstructures.