A high performance composite ionic conducting electrolyte for intermediate temperature fuel cell and evidence for ternary ionic conduction

SDC/Na2CO3 nanocomposite: New freeze drying based synthesis and application as electrolyte in low-temperature solid oxide fuel cells

“…The average crystallite size of SDC phase in each composite samples is ca. 10 nm as calculated by Scherrer equation, which is much smaller compared to the SDC sample prepared by coprecipitation technique which Xia et al reported [27]. This demonstrates that the pre-mixing of SDC precursor with Na 2 CO 3 can effectively restrain the grain growth of SDC particles during the calcination process, due to the significant diffusion barrier effect of Na 2 CO 3 second phase [22].…”

A Novel Molten Oxide Fuel Cell Concept

“…have been examined to limit the ohmic loss through reducing the thickness of the electrolyte layer. Recently, more effective salt-ceriacomposite electrolytes are developed for hybrid molten carbonate/solid oxide fuel cells [2][3][4]. However, the CO 2 /O 2 gas mixture is needed as a cathode gas in the hybrid fuel cells.…”

Breakthrough fuel cell technology using ceria-based multi-functional nanocomposites

“…As stated above since multi-parameters determine the final ceria-composite material electrical properties and H + /O 2À conductivities, it has to be studied from case to case. On the other hand, highly mobile CO 2À 3 anions from the carbonate phase can also promote oxygen ion mobility [82,83]. Under such circumstances, the oxygen ions (vacancies) formed on ceria nanoparticle surfaces can contribute to the high mobility of O 2À along the interfacial region of the ceria phase in contact with the carbonate.…”

“…Moreover, combined MCFC and SOFC operation model is also possible. Li et al [39,82] proposed the ceria-carbonate (40 wt.%) composites as a hybrid-ionic transport electrolyte, which was operated by adding CO 2 at cathode side and achieved 1.7 W cm À2 at 650°C. It should be pointed out that …”