High air-stability and superior lithium ion conduction of Li3+3P1-Zn S4-O by aliovalent substitution of ZnO for all-solid-state lithium batteries

A series of new solid electrolytes of Li3+3xP1-xZnxS4-xOx (x = 0.01, 0.02, 0.03, 0.04, 0.05, 0.06) are synthesized successfully via Zn, O co-doping the Li3PS4 glass-ceramic for the first time. The result shows that Li3PS4 aliovalent substitution of 2 mol% ZnO (Li3.06P0.98Zn0.02S3.98O0.02) presents the highest conductivity of 1.12×10−3 S cm−1 at room temperature, which is twice that of the pristine Li3PS4. Besides, Li3.06P0.98Zn0.02S3.98O0.02...