Performance of Y0.9Sr0.1Cr0.9Fe0.1O3−δ as a sulfur-tolerant anode material for intermediate temperate solid oxide fuel cells

The Y0.9Sr0.1Cr0.9Fe0.1O3−δ was synthesized by gel combustion method. The YSCF-based anode was studied for further research as the real anode for SOFC operating on H2S or H2S-containing fuels. The characteristic of YSCF powders and the cell were analysis by XRD, BET, and EIS. It appeared to be chemically and electrochemically stable under SOFC operating conditions. Thermodynamic calculations and X-ray photoelectron spectroscopy (XPS) analysis have been used to research the stability of the element in YSCF when exposed to hydrogen sulphide (H2S) in hydrogen (H2) over a range of partial pressures of sulfur (pS2) and oxygen (pO2) representative of fuel cell operating conditions. By using analysis of electrochemical performance and XPS, the emergence of FeSO4 in the sulfur treatment should play an important role to prevent further sulfur-poisoning.