Characterization and Performance of a Samarium-Doped Ceria/Barium Carbonate Composite Electrolyte for Low-Temperature Solid Oxide Fuel Cells

This article presents the successful testing of 70% w/w samarium-doped ceria mixed with 30% w/w barium carbonate (SDC/BC) electrolyte for use as an improved electrolyte for low-temperature solid oxide fuel cells (LT-SOFCs). The phase changes, particle size distribution, morphology, electrochemical impedance, conductivity, and maximum power density of the fuel cell based on this SDC/BC composite electrolyte are discussed. The SDC/BC electrolyte is chemically compatible with a Ni-SDC/BC anode. The conductivity of the SDC/BC is 102.7 mS cm(-1) at 600 degrees C with an activation energy of 36.12 kJ mol(-1). The maximum power output of the Ni-SDC-BC/SDC-BC/Pt cell is 427 mW cm(-2) at 600 degrees C, which is attributed to the high electrochemical activity of both the electrolyte and the anode material. These results demonstrate that SDC/BC has potential as a low-temperature electrolyte for LT-SOFC.

Automated summary

This article presents the successful testing of a samarium-doped ceria mixed with barium carbonate (SDC/BC) electrolyte for low-temperature solid oxide fuel cells (LT-SOFCs). The study discusses the phase changes, particle size distribution, morphology, electrochemical impedance, and conductivity of the SDC/BC electrolyte. The results demonstrate the potential of SDC/BC as a low-temperature electrolyte for LT-SOFC.