Li3V2(PO4)3 and Li3V1.9M0.1(PO4)3 (M = Fe, Al) samples were synthesized via spray-drying-assisted carbothermal solid-state reaction, and their structural and electrochemical properties were investigated by XRD, SEM, and galvanostatic charge/discharge. Li3V2(PO4)3, Li3V1.9Fe0.1(PO4)3, and Li3V1.9Al0.1(PO4)3 showed initial discharge capacities of 103.3 mAh g- 1, 107.6 mAh g- 1, and 105.6 mAh g- 1, respectively, in the all-solid-state symmetric batteries with Li1.5Al0.5Ge1.5(PO4)3 solid-state electrolytes at a rate of 7.5 mA g- 1. The enhanced discharge capacities of Fe and Al-doped Li3V2(PO4)3 could be attributed to the increased electrical conductivity induced by the introduction of Fe3 + or Al3 + trivalent ions into the V3 + sites and to the structural stabilization of the monoclinic Li3V2(PO4)3 by the spray-drying process.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics