Oxygen substitution effects in Li10GeP2S12 solid electrolyte

摘要: Abstract For the lithium super-ionic conductor Li 10 GeP 2 S 12 , partial substitution of sulfur by oxygen is achieved via a solid-state reaction. The solid-solution range found to be 0 ≤  x 12− O . Structure refinements using synchrotron X-ray diffraction data confirm preference for in PS 4 tetrahedra. local structural change P(S/O) tetrahedra upon also indicated Raman spectroscopy. Ionic conduction properties are maintained even after ; ionic conductivity (0.3 ≤   ≤ 0.6) ranges from 1.03 × 10 −2 8.43 × 10 −3  S cm −1 at 298 K. No redox current observed cyclic voltammetry nearly 0 10 V versus Li/Li + except that due deposition/dissolution reactions. All-solid-state batteries (  = 0.3 and 0.6) as solid electrolytes with metal anodes show discharge capacities exceeding 100 mAh g better cycling performance compared original affords novel electrolyte, high conductive electrochemical stability.