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- Title
The influence of co-doping strontium and zirconium on structure and ionic conductivities of Li6+yLa3−ySryNbZrO12 solid electrolytes.
- Authors
Zhang, Tianhang; Liu, Yangai; Christopher, Timothy Daniel; Huang, Saifang; Yang, Tao; Huang, Zhaohui; Gao, Wei; Söhnel, Tilo; Cao, Peng
- Abstract
To enhance the ionic conductivity of lithium garnets, a co-doping strategy was adopted with both strontium and zirconium for Li 6 + y La 3 − y Sr y NbZrO 1 2 (y = 0 , 0.25, 0.5, 0.75 and 1.0) (LLSNZO). By increasing the content of Sr, lithium garnet ceramics maintain cubic structure when y is in the range of 0–0.75. A secondary phase of SrZrO 3 appeared in the ceramic when y = 1. 0. We also studied the cross-section of lithium garnets with silver electrode. Results showed that the density of LLSNZO ceramics increased continuously against the increase of Sr content, while their total ionic conductivity enhanced initially and then reduced, with the maximum reached when y = 0. 5. It is indicated that ionic conductivity of lithium garnets is not only decided by the density but also decided by the concentration and the mobility of Li + .
- Subjects
SOLID electrolytes; IONIC conductivity; IONIC structure; ZIRCONIUM; STRONTIUM; LITHIUM cell electrodes; GARNET; CERAMICS
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2020, Vol 34, Issue 1-3, pN.PAG
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979220400068