Abstract
Powder mixtures of 3%Y2O3 (3Y) and 8%Y2O3 (8Y) were used to obtain heterogeneous solid electrolytes with good sinterability and mostly fine grain sizes, without significantly undue effects on ionic conductivity. Samples with 8Y:3Y{less than or equal to}1:1 retain submicrometer grain sizes, with very rare grains above 1 {less than or equal to}m. Impedance spectroscopy was used to de-convolute the bulk and grain boundary contributions, and to analyze their dependence on the fraction of 3Y. Bulk conductivity and its activation energy vary gradually with increasing 8Y:3Y ratio. The lower grain boundary conductivity of homogeneous 3Y can be ascribed to a combination of finer grain sizes and also lower specific grain boundary conductivity. However, the grain boundary conductivity differences of heterogeneous samples obtained from 3Y+8Y mixtures can be mainly ascribed to differences in grain size. Specific grain boundary conductivity results of these heterogeneous solid electrolytes are similar to those obtained for homogeneous 8Y.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
