Synthesis and electrochemical properties of LSM and LSF perovskites as anode materials for high temperature steam electrolysis

Abstract

La 0.8Sr 0.2MnO 3 (LSM) and La 0.8Sr 0.2FeO 3 (LSF) perovskites used as the anode materials for high temperature steam electrolysis (HTSE) were synthesized by sol–gel self-propagating method. These two powders were mixed with yttria-stabilized zirconia (YSZ) powders, respectively to fabricate composite anodes of solid oxide electrolysis cells (SOECs). The LSM–YSZ and LSF–YSZ composite anodes were tested at 1073 K SOEC working temperature under electrolysis conditions, using cells with a YSZ electrolyte and a Pt counter electrode. Their electrochemical performances were compared and the possibilities of using as SOEC anodes were discussed.