Preparation and characterization of La0.75Sr0.25Cr0.5Mn0.5O3−δ-yttria stabilized zirconia cathode supported solid oxide electrolysis cells for hydrogen generation

► LSCM-YSZ cathode supported SOEC has been prepared and evaluated for hydrogen generation. ► Encouraging theoretical hydrogen generate rate of 561 ml cm−2 h−1 at 850 °C has been achieved. ► The cell has endured a durability test of over 103 h at 850 °C.