Improvement of a reduction-resistant CeSmO electrolyte by optimizing a thin BaCeSmO layer for intermediate-temperature SOFCs

Evaluation of A-site cation-deficient (Ba0.5Sr0.5)1−xCo0.8Fe0.2O3−δ (x>0) perovskite as a solid-oxide fuel cell cathode

“…Typical SOFCs operate at ∼1000 • C, and elevated temperatures introduce a series of problems such as the sintering of electrodes, high reactivity between cell components, and strict requirements on interconnected materials. Consequently, there is increasing interest in intermediate-temperature (IT)-SOFCs, which are operated in the range of 500-800 • C [1][2][3][4][5]. The decrease in operating temperature, however, increases the cells' overpotential, and the main contributor to this increase is the cathode [6,7].…”

Nano-sized Sm0.5Sr0.5CoO3−δ as the cathode for solid oxide fuel cells with proton-conducting electrolytes of BaCe0.8Sm0.2O2.9

“…With HTPC electrolyte, water is formed at the cathode. This makes proton-conducting fuel cells (H-SOFCs) gain some advantages over those cells with oxygen-ion conducting electrolytes (O-SOFC), such as greater fuel utilization efficiency and simpler fuel-recycling instruments [1][2][3]. Yet, the formation of water at the cathode induces large cathode polarization resistances.…”

Current collecting efficiency of micro tubular SOFCs

“…The peak power of 58, 140, 294 mW obtained respectively at 450, 500 and 550 • C from the single cell with the length of 1 cm (cathode length = 7 mm). The open circuit voltages were dropped from 1.03 to 0.86 V as furnace temperature increased from 450 to 550 • C, which is usually explained by an increase of electronic conductivity at reducing atmosphere in ceria based electrolyte [12,13]. Fig.…”