Lithium-ion conduction of Li<ce:inf loc="post">1.4</ce:inf>Al<ce:inf loc="post">0.4</ce:inf>Ti<ce:inf loc="post">1.6</ce:inf>(PO<ce:inf loc="post">4</ce:inf>)<ce:inf loc="post">3</ce:inf>-GeO<ce:inf loc="post">2</ce:inf> composite solid electrolyte

The NASICON-type lithium-ion conducting Li1+xAlxTi2−x(PO4)3 solid electrolytes are attractive candidates as the separator for high energy density aqueous lithium-air batteries and all-solid-state batteries because they are stable in aqueous solutions with a high content of lithium ions. To improve t...
Ausführliche Beschreibung

The NASICON-type lithium-ion conducting Li1+xAlxTi2−x(PO4)3 solid electrolytes are attractive candidates as the separator for high energy density aqueous lithium-air batteries and all-solid-state batteries because they are stable in aqueous solutions with a high content of lithium ions. To improve the lithium-ion conductivity of 6.0 × 10−4 S cm−1 at 25 °C for Li1.4Al0.4Ti1.6(PO4)3 (LATP), the additions of metal oxides of GeO2, TiO2, and Al2O3 were examined. The highest lithium-ion conductivity of 1.15 × 10−3 S cm−1 at 25 °C was observed for LATP-3 wt% GeO2 sintered at 950 °C. This enhancement is explained by enhancements in both bulk and grain boundary conductivity. Ausführliche Beschreibung