材料科学
离子电导率
电解质
X射线光电子能谱
立方氧化锆
离子键合
活化能
氧化物
陶瓷
大气温度范围
分析化学(期刊)
化学工程
物理化学
复合材料
离子
化学
电极
冶金
热力学
有机化学
物理
工程类
作者
Michał Mosiałek,Muhammad Bilal Hanif,Т. Салкус,A. Kežionis,E. Kazakevičius,А.Ф. Орлюкас,Robert P. Socha,Wiesław Łasocha,M. Dziubaniuk,Jan Wyrwa,M. Gregor,Martin Motola
标识
DOI:10.1016/j.ceramint.2023.01.111
摘要
Ceramic electrolytes based on Yb and Sc stabilized zirconia enable efficient heat transfer and effective ionic conductivity. Here, the design and synthesis of Yb and Sc stabilized zirconia electrolyte is presented for intermediate temperature solid oxide fuel cells (SOFCs). Yb0.12Sc0.08Zr0.8O2–δ was synthesized using the sol-gel method, and a thorough characterization of the electrolyte properties was conducted including structural and electrical properties. X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray spectroscopy (EDS) confirmed the composition of the electrolyte. A single-phase cubic structure with a density of 6.7041 ± 0.0008 g cm−3 was obtained. The thermal expansion coefficient in the temperature range from 25 °C to 800 °C is equal to 1.17 × 10−6 K−1. The activation energy of 1.06 eV and 1.15 eV was obtained for the bulk and grain boundary conductivity, respectively. The ionic conductivity of approx. 2.10 S m−1 was achieved at 667 °C, thus it is suitable for efficient ionic conduction at intermediate temperatures.
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