Lithium ion conductivity of solid solutions based on Li8ZrO6
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Lithium ion conductivity of lithium hexaoxozirconate Li8ZrO6 doped by Mg2+, Sr2+, Nb5+, V5+, and Ce4+ cations was studied using impedance spectroscopy. The NMR data indicate that in the low-temperature region, lithium ion migration takes place by exchange of Li+ among tetra- and octahedral positions. Data of Raman spectroscopy suggest that the potential reason for the sharp increase of Li8ZrO6 and its solid solutions’ conductivity near 700 K may be melting of LiOH which occurs as a result of interaction between samples and atmospheric moisture.
KeywordsSolid electrolytes Lithium ion conductivity Lithium hexaoxozirconate Lithium batteries Raman spectroscopy Nuclear magnetic resonance
The authors are grateful to S.V. Plaksin and E.G. Vovkotrub. The research has been carried out with the equipment of the Shared Access Center “Composition of Compounds” of the Institute of High-Temperature Electrochemistry of Ural Branch of RAS, Yekaterinburg, Russian Federation.
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