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- W3005492771 abstract "In this study, alkaline earth metals (Mg, Ca, Sr, Ba) doped Nd2Ce2O7 powders are synthesized by the gel auto-combustion method. The effects of alkaline earth metals doped Nd2Ce2O7 on the phase structure, chemical stability, microstructure, and electrical properties are evaluated by the X-ray diffraction, scanning electron microscopy, Raman spectroscopy and electrochemical testing. All electrolytes reveal a cubic fluorite structure with an Fm-3m space group and remain excellent chemical stability at different atmospheres. The grain size and density of ceramics increase significantly, and a large number of oxygen vacancies are created after alkaline earth metals incorporated into Nd2Ce2O7. Generally, the total conductivity is associated with the number of oxygen vacancies and microstructure of ceramics. The electrolyte of Nd1.85Mg0.15Ce2O7-δ exhibits the highest electrical conductivity of 0.923 × 10−2 S cm−1 and 1.542 × 10−2 S cm−1 in dry air and wet 5% H2–Ar atmosphere at 700 °C, respectively. Additionally, with alkaline earth metals doped Nd2Ce2O7 as electrolytes, the proton-conducting single cells have a better open circuit voltage and peak power density. The single cell based on Nd1.85Mg0.15Ce2O7-δ electrolyte can reach 0.890 V and 483 mW cm−2 at 700 °C. This was observed to stay constant without extreme degradation after short-term testing." @default.
- W3005492771 created "2020-02-14" @default.
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- W3005492771 creator A5067730192 @default.
- W3005492771 date "2020-06-01" @default.
- W3005492771 modified "2023-10-14" @default.
- W3005492771 title "Exploring the effects of divalent alkaline earth metals (Mg, Ca, Sr, Ba) doped Nd2Ce2O7 electrolyte for proton-conducting solid oxide fuel cells" @default.
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- W3005492771 doi "https://doi.org/10.1016/j.ceramint.2020.02.034" @default.
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