Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7745429 | Solid State Ionics | 2016 | 5 Pages |
Abstract
Solid solutions of the lithium ion conductor LaLiO2 were synthesized using a solid-state reaction method. For the strontium-doped system, Sr2 + was partially doped at the La sites with the composition La1 â xSrxLi1 + xO2 (x = 0.1, 0.2), which introduced excess lithium into the structure, while for the magnesium-doped system, Mg2 + was partially doped at the Li+ site with LaLi1 â 2yMgyO2 (y = 0.1, 0.2) which introduced Li+ vacancies. The magnesium-doped sample with y = 0.1 in LaLi1 â 2yMgyO2 showed higher ionic conductivity of 9.22 Ã 10â 5 S cmâ 1 than that of the respective Sr doped sample of x = 0.1 in La1 â xSrxLi1 + xO2 (4.64 Ã 10â 5 S cmâ 1) at 300 °C. Higher ionic conductivity in the Mg doped system indicates that vacancies led to high lithium ion conduction in LaLiO2. The doped LaLiO2 systems are a novel lithium conductive oxides family.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Muhammad Iqbal, Kota Suzuki, Genki Kobayashi, Guowei Zhao, Masaaki Hirayama, Ryoji Kanno,