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Abstract In this paper, a 4 mol% MgO doped Zr0.92Y0.08O2-α (8YSZ) and its composite electrolyte of 8YSZ + 4MgO-NaCl/KCl were synthesized via a solid state reaction method. The morphology, structure and intermediate temperature… Click to show full abstract
Abstract In this paper, a 4 mol% MgO doped Zr0.92Y0.08O2-α (8YSZ) and its composite electrolyte of 8YSZ + 4MgO-NaCl/KCl were synthesized via a solid state reaction method. The morphology, structure and intermediate temperature electrochemical properties of the obtained samples were investigated. The logσ ～ log (pO2) and log (σT) ～ 1000 T−1 Arrhenius plots of the 8YSZ+ 4MgO and 8YSZ + 4MgO-NaCl/KCl were performed. Oxygen concentration discharge cells were measured in order to determine the oxide ionic conduction in the samples. Finally, H2/O2 fuel cell using the 8YSZ + 4MgO-NaCl/KCl as electrolyte obtained the highest power density of 444 mW cm−2 at 700 °C.
Journal Title: Ceramics International
Year Published: 2019
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