High performance La0.8Sr0.2MnO3-coated Ba0.5Sr0.5Co0.8Fe0.2O3 cathode prepared by a novel solid-solution method for intermediate temperature solid oxide fuel cells

La0.8Sr0.2MnO3 (LSM)-coated Ba0.5Sr0.5Co0.8Fe0.2O3 (BSCF) composite powder (LSM-BSCF) was synthesized by a novel solid-solution method and investigated electrochemically as a cathode material for intermediate temperature solid oxide fuel cells. The cathode combined the merits of LSM and BSCF cathodes through an extended triple phase boundary and stabilized microstructure and demonstrated a polarization resistance between 0.61 and 0.09 Ω cm2 at 600 to 750 °C. Compared with high performance cathodes prepared by solution impregnation, this LSM-BSCF cathode greatly improved performance stability.

Graphical AbstractLa0.8Sr0.2MnO3(LSM)-coated Ba0.5Sr0.5Co0.8Fe0.2O3 (BSCF) composite powder (LSM-BSCF) synthesized by a novel solid-solution method, exhibited an extended triple phase boundary, reduced LSM polarization resistance, and stabilized microstructure as of the cathode.Figure optionsDownload full-size imageDownload as PowerPoint slide