Enhanced sinterability and electrical performance of Sm2O3 doped CeO2/BaCeO3 electrolytes for intermediate-temperature solid oxide fuel cells through Bi2O3 co-doping

Recent Advancements in the Synthesis and Application of Carbon-Based Catalysts in the ORR

“…For example, the novel doping of samarium-doped barium cerate (SDC-BCS) with Bi 2 O 3 to make Bi-SDC-BCS demonstrated much improvement in intermediate temperature (IT) solid oxide fuel cell (IT-SOFC) applications. Sintering temperature decreased from 1300 • C to 1100 • C. With an exhibited thermal stability even at 700 • C, Bi-SDC-BCS demonstrated a power density of 352 mW cm −2 , which is almost two times the compared power density of SDC-BCS alone [143].…”

Influences of Bi0.75Y0.25O1.5 addition on the microstructure and ionic conductivity of Ce0.8Y0.2O1.9 ceramics

“…4,8,9 A great deal of relevant literature has reported that Bi 2 O 3 can be added into CeO 2 or ZrO 2 -based ceramics as a suitable sintering assistant to reduce sintering temperature by 200°C-500°C owing to its low melting point (~825°C). [10][11][12][13] Han et al 14 added 3 mol% Bi 2 O 3 into 3 mol% Y 2 O 3 -stabilized ZrO 2 (3YSZ) as a sintering aid and the relative density could reach 96.5% after sintering at 1000°C for 1.5 h, meaning that the sintering temperature was lowered by 400°C-500°C. Gil et al 11 introduced a small amount of Bi 2 O 3 (≤2.0 wt%) into Ce 0.9 Gd 0.1 O 1.95 (GDC), and the relative density of GDC sintered at 1200°C-1400°C for…”

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A second phase of Y 2 O 3 -stabilized Bi 2 O 3 (Bi 0.75 Y 0.25 O 1.5 ,YSB) is introduced into Y 2 O 3 -doped CeO 2 (Ce 0.8 Y 0.2 O 1.9 ,YDC) as a sintering additive and the composite ceramics of 5,10,20,30, 40 wt%) are prepared through sintering at 1100°C for 6 h in air atmosphere. The YDC-xYSB ceramics are composed of both YDC and YSB with cubic fluorite structure, and no other impurity phases are detected in XRD patterns.

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