Performance and electrochemical analysis of solid oxide fuel cells based on <scp>LSCF</scp> ‐ <scp>YSZ</scp> nano‐electrode

Abstract

Abstract NiO‐ YSZ / YSZ / LSCF ‐ YSZ tri‐layer structure SOFC has been fabricated by tape casting and infiltration methods. Subsequently, polarization curves and electrochemical impedance spectra measurement were carried out to evaluate cell performance at 850‐700°C with varied steam content in hydrogen supplied to the anode. At 800°C, open circuit voltage for 4% steam‐humidified hydrogen reached 1.069 V, along with a power density of 831 mW/cm 2 at 0.7 V. Furthermore, 500 hours of long‐term durability test has been performed at 750°C in hydrogen atmosphere, as a consequence that a voltage degradation rate of 1.7%/kh has been measured.