The effect of lithium excess toward synthesis of Li7La3Zr2O12 cubic garnet-type as solid electrolyte for all solid-state rechargeable batteries.

In this work, we report a low temperature biopolymer sol-gel route to synthesise these garnet materials using Agar, with the formation of the garnet phase at temperatures 1000 °C ~ 1100 °C, with single phase samples of cubic Li₇La₃Zr₂O₁₂. XRD measurement shows that the complete formation of cubic Li₇La₃Zr₂O₁₂ with 10% excess of lithium is at 1000°C, which is ~100°C lower than the addition of 30% excess lithium which is at 1100°C. However, the conductivity plot shows the conductivity of the Li₇La₃Zr₂O₁₂ with 30% lithium excess contributed in high Li+ conductivity compared with Li₇La₃Zr₂O₁₂ with 10%. [ABSTRACT FROM AUTHOR]