| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1295430 | Solid State Ionics | 2014 | 4 Pages |
•Single phase garnet-like Li5 + 2xLa3Nb2 − xScxO12 was synthesized in x = 0–0.75.•Magnesia crucible was effective to eliminated contamination in the samples.•Lithium ion conductivity increased with the lithium content.•An average bulk conductivity of ca. 3.5 × 10− 4 S cm− 1 was obtained at 25 °C.
The Al-free cubic garnet-like Li5 + 2xLa3Nb2 − xScxO12 series with x = 0–0.75 was successfully synthesized by solid state reaction. Final sintering at 1150 °C for 12 h in a magnesia crucible with the mother powder method resulted in stoichiometric single phases that corresponded to each nominal composition. The conductivity of the samples showed a positive dependency on the Li content and the optimum Li content for Li conduction was 6.25–6.5 in the formula unit. The highest bulk conductivity of 3.70 × 10− 4 S cm− 1 was observed for x = 0.625 at 25 °C and that for x = 0.75 at 50 °C was 6.05 × 10− 4 S cm− 1.
