Promising Ni–Fe–LSGMC anode compatible with lanthanum gallate electrolyte

A number of composite materials in the Ni–Fe–LSGMC family have been studied as potential anodes for solid oxide fuel cells (SOFCs) based on strontium, magnesium, and cobalt doped lanthanum gallate electrolyte (LSGMC). The results show that Ni reacts with LSGMC especially under reducing conditions at high temperatures, resulting in high contact resistance, large electrode polarization, and poor performance. The reaction between Ni and LSGMC depends strongly on the composition and pre-sintering temperature of LSGMC, the concentration of iron in the electrode, and the processing and operating temperatures. Under proper conditions, Ni–Fe–LSGMC5 could be a promising high-performance anode with good compatibility with LSGMC5 electrolyte.