Abstract
All-solid-state lithium (Li) ion batteries are regarded as optimal solutions to secure energy problems because of their characteristics, such as no leakage and nonflammability. However, low Li-ion conductivity in these batteries limits their applications. Perovskite-type Li-ion conductors have been considered promising solid electrolytes by replacing A- and B-site ions to improve ion conductivity. In this study, the strategy of replacing O2- anions with F- in perovskite-type structure LiSr1−0.5xTiTaO6−xFx was carried out. Solid electrolytes were successfully prepared by conventional solid-state reactions. The influence of fluorine ion (F-) content in these compounds was systematically investigated regarding ion conductivity. Total conductivity attained was as high as 3.67 × 10−4 S·cm−1 at room temperature in samples with x = 0.1. However, excessive F- doping causes octahedral distortions and produced narrow bottlenecks surrounded by [TiO6] octahedra, which led to decreased conductivity and increased migration activation energy.
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.
