The La1.95Ca0.05Ce2O7-δ (LCCO) material is successfully synthesized using the Pechini method. The synthesized powders are exposed to atmospheric CO2 and H2 with 3% H2O at 700 °C. The treated LCCO powders are investigated using X-ray diffraction (XRD) to study the chemical stability. According to the XRD results, LCCO is very stable and shows no reactions with CO2 or H2O. A fuel cell with the LCCO electrolyte is prepared using the suspension spray method and is tested in the range from 600 °C to 700 °C using humidified hydrogen (∼3% H2O) as the fuel and static air as the oxidant. An open-circuit potential of 0.832 V and a maximum power density of 259 mW cm-2 are obtained for a single cell with an interface resistance of 0.23 Ω cm2 at 700 °C.
Bibliographical noteFunding Information:
This work is supported by the National Natural Science Foundation of China (Grant Nos.: 21076204 ) and the National High-tech R&D Program of China (Grant No.: 2007AA05Z157 ).
- Chemical stability
- In situ sintering
- Pechini method
- Solid oxide fuel cells
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering