Symmetrical Solid Oxide Fuel Cells (SSFCs) are highly competitive options for a sustainable energy future, however, its application is hindered by the development of more surfer tolerance and highly efficient electrodes. Sr2FeCo0.5Mo0.5O6-delta (SFCM) was investigated as potential electrode materials for SSFCs using H2S as a fuel directly. SFCM powders, before and after exposure to 0.05% H2S/N-2, were carried out to analyze the structure and morphology by X-ray diffraction (XRD), transmission electron microscope (TEM) and scanning electron microscope (SEM). A maximum power density of 45.69 mW cm(-2) was obtained in the configuration of SSFC (SFCM/LSGWSFCM) in 0.05% H2S/N2 at 800 degrees C. SFCM had high catalytic activity in converting H(2)5 into SO2 without obviously deactivation. After cell test, X-ray photoelectron spectroscopy (XPS) was used to reveal the distribution of valence state of sulfur. There founding demonstrated that the SSCM has a certain surfer tolerance ability, and that understanding how the electrodes works and impact the cell performance is critical to the design of highly stable double perovskite electrodes. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.