A Ceramic-Anode Supported Low Temperature Solid Oxide Fuel Cell

Effect of synthesis atmosphere on the proton conductivity of Y-doped barium zirconate solid electrolytes

“…This electrolyte has predominant ionic conduction reaching 0.1 S/cm at 1000°C. However, there are several problems associated with the high temperature, including thermal expansion mismatch of components, cell poisoning and degradation due to CO and CO 2 formation leading to carbon deposition (coking), decreasing cell performance and lifetime [6][7][8]. Therefore, efforts continue to reduce SOFC working temperature to an intermediate range (650-850°C, ITSOFC) [9,10] and even a lower range (400-650°C.…”

Enthalpy of formation and thermodynamic insights into yttrium doped BaZrO3

“…3,4 This operating temperature range could improve the fuel cell lifetime and component compatibility, when compared to high temperature SOFCs (800-1000 C). [5][6][7] Due to its refractory nature (melting point $2600 C), downsides of Y-doped barium zirconate are its chemical inhomogeneity, poor densication and grain growth when powders are synthesized by conventional solid state reaction, requiring extreme sintering conditions (1500-1700 C) and long dwell times. Along with these processing conditions, barium oxide (BaO) volatilization is also a major concern in YBZ.…”

Low temperature co-sintering of Sr2Fe1.5Mo0.5O6−δ–Gd0.1Ce0.9O2−δ anode-supported solid oxide fuel cells with Li2O–Gd0.1Ce0.9O2−δ electrolyte

“…However, those GDC electrolytes were sintered at above 1400 C. Therefore, the cell fabricated cost will be lower in our study. The performance is lower than those for other ceramic anode supported cells, which was impregnated with metal [13]. The metal infiltrate can increase anode conductivity and improve catalytic activity.…”