Lithium-Cation Conductivity of Solid Solutions in Li(6-x)Zr(2-x)A(x)O(7) (A = Nb, Ta) Systems

Li(6-x)Zr(2-x)AxO(7) (A = Nb; Ta) system with 0 < x < 0.30 is synthesized by glycine-nitrate method. Boundaries of solid solutions based on monoclinic Li(6)Zr(2)O(7) are determined; temperature (200–600 °C) and concentration dependences of conductivity are investigated. It is shown that monocl...

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Detalles Bibliográficos
Autores principales: Shekhtman, Georgiy Sh., Kalashnova, Anastasia V., Antonov, Boris D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8618877/
https://www.ncbi.nlm.nih.gov/pubmed/34832306
http://dx.doi.org/10.3390/ma14226904
Descripción
Sumario:Li(6-x)Zr(2-x)AxO(7) (A = Nb; Ta) system with 0 < x < 0.30 is synthesized by glycine-nitrate method. Boundaries of solid solutions based on monoclinic Li(6)Zr(2)O(7) are determined; temperature (200–600 °C) and concentration dependences of conductivity are investigated. It is shown that monoclinic Li(6)Zr(2)O(7) exhibits better transport properties compared to its triclinic modification. Li(5.8)Zr(1.8)Nb(Ta)(0.2)O(7) solid solutions have a higher lithium-cation conductivity at 300 °C compared to solid electrolytes based on other lithium zirconates due the “open” structure of monoclinic Li(6)Zr(2)O(7) and a high solubility of the doping cations.

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