La0.84Sr0.16MnO3−δ cathodes impregnated with Bi1.4Er0.6O3 for intermediate-temperature solid oxide fuel cells

Interfacial modification of La0.80Sr0.20MnO3−δ–Er0.4Bi0.6O3 cathodes for high performance lower temperature solid oxide fuel cells

“…The calculated activation energies for both cells were identical, w1.23 eV. This value is in good agreement with other reported values for LSMebismuth oxide cathodes (1.23e1.5 eV), which of course depend on microstructure and composition of the composite cathodes [29,31,33,37]. For comparison, the activation energy for pure LSM on a SDC electrolyte is at the high end, w1.5 eV [31].…”

A new composite cathode for intermediate temperature solid oxide fuel cells with zirconia-based electrolytes

“…The follow-up work also confirmed improved intermediate-temperature performance with LSM-Bi 2 O 3 composite cathode [23][24][25][26][27][28][29]. Li et al reported that the 50%ESB-infiltrated LSM yielded ASR of 0.22 and 0.48 Ω cm 2 at 700 and 650 o C, ~35× lower than those of pure LSM [26].…”

Nano-structured composite cathodes for intermediate-temperature solid oxide fuel cells via an infiltration/impregnation technique

“…The cell with 50 wt.% SDC impregnated LSM cathode, SDC electrolyte, and Ni-SDC anode produces a maximum power density of 138 mW cm −2 at 600 • C. With further optimization of anode [88], the power density increases to 463 mW cm −2 , which is comparable to that obtained with a cell using SSC cathode [16] cathode, indicating the great promise to the development of low temperature SOFCs using LSM cathodes. Recently, yttria-stabilized bismuth oxide (YSB) which possesses higher oxygen ion conductivity than the YSZ and doped-ceria has been evaluated as a candidate to infiltrate the LSM electrodes [64,65,75]. The process of constructing YSB infiltrated LSM cathodes is similar to that of doped ceria infiltrated LSM ones [64,65].…”

“…The stability of bismuth oxides infiltrated LSM cathodes has been investigated within 200 h operation. Jiang et al [65] reported that R p of YSB infiltrated LSM cathode exhibited 8% perturbation at 700 • C within 200 h under open circuit condition, while Li et al [75] showed that erbia stabilized bismuth oxide infiltrated LSM cathodes was highly stable at 650 • C under 0.3 A cm −2 polarization within 200 h testing.…”