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1. Proton conduction in doped ceria-carbonate composite electrolytes | |||
Zhao Yicheng | |||
Energy Science and Technology 30 April 2017 | |||
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Abstract: Doped ceria-carbonate composite is considered as a promising electrolyte for intermediate temperature solid oxide fuel cells. H+ conduction in the composite has attracted much attention in recent years, while its mechanism has not been revealed clearly. In this work, H+ conductivities of samarium doped ceria-carbonate composites with varying composition are measured by a four-probe direct current method. For composites with aggregated carbonate phase, H+ conductivity increases with the rise of carbonate content, while for composites with a more homogeneous distribution of phases, a larger interfacial region means higher H+ conductivity. We propose that H+ conducts through both the molten carbonate phase and the interfacial region. H+ conduction at the interface is influenced by the composition of the ceramic phase. | |||
TO cite this article:Zhao Yicheng . Proton conduction in doped ceria-carbonate composite electrolytes [OL].[30 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4727218 |
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