Evaluation of Strontium Doped Lanthanum Chromium Manganite (LSCM) and Gadolinium Doped Ceria (GDC) Anode with Different Compositions

摘要

In the present study, the Ni-free anode fabricated with La_(0.9)Sr_(0.1)Cr_(0.5)Mn_(0.5)O_(3-δ) (LSCM) and Gd_(0.1)Ce_(0.9)O_(2-δ) (GDC) powders is evaluated. The sintering temperature, electrode thickness and composition are optimized. The anodes with GDC share over 70% exhibited the lowest initial polarization resistance. However, anodes with share of GDC over 80% significantly degraded in the accelerated degradation test. The reason of the degradation is attributed to the nano-cracking of the GDC phase. It was found out that LSCM stabilizes the GDC structure, and LSCM-GDC 30:70wt.% was found to be the optimal composition considering the initial performance and stability.