Degradation of Solid Oxide Electrolyzer Cells with Different Anodes

Solid oxide electrolyzer cells (SOECs) have been considered effective to produce hydrogen at a high conversion efficiency through high temperature electrolysis (HTE) process and has a potential to scale up to a large-scale economy hydrogen source. The crucial issue for the SOEC moving into practical applications is stability. In this paper, investigation was conducted with the focus on the anode degradation using SOEC cells with strontium doped lanthanum manganite (LSM) anode and strontium doped lanthanum ferro-cobaltites (LSCF) anode. The results showed a more stable performance in LSM cells than LSCF cells when testing at 750 degrees C anode degradation and anode delamination contributed most of performance drop. The LSM cell is thus more suitable for HTE than the LSCF cell due to its better bonding between the electrolyte and anode.