Direct CH4 fuel cell using Sr2FeMoO6 as an anode material

► Double-perovskite Sr2FeMoO6 can be used as anode material for solid oxide fuel cell. ► No buffer layer between the anode and electrolyte is needed in the cell. ► The maximum power density is 863.7 mW cm−2 with H2 at 850 °C. ► The maximum power density is 604.8 mW cm−2 with dry CH4 at 850 °C. ► Sr2FeMoO6 anode gives a stable performance in H2 and dry CH4.