Advanced Impedance Spectroscopy Study of the Influence of the Crystalline Structure on the Ionic Conduction of Thin Solid-State Electrolytes

In this work, an experimental and modeling approach that considers the crystalline nature of the material is used to u the electrical behavior of thin film solid state electrolytes. In this research, the complex electrical properties at different temperatures of nanocrystal yttrium-doped ceria (YDC) are determined by electrochemical impedance spectroscopy (EIS). The impedance modeling provides a description of the electrical behavior of the material. The influence of the geometry of the electrodes in the electrical measurements is investigated by finite element simulations for different electrode spacing. The combined analysis represents a strong approach to elucidate the experimental evidence that is not explained by the available physical models.