Liquid-phase synthesis of 100Li3PS4-50LiI-xLi3PO4 solid electrolytes

Design Unique Air‐Stable and Li–Metal Compatible Sulfide Electrolyte via Exploration of Anion Functional Units for All‐Solid‐State Lithium–Metal Batteries

“…As the chemical shift of POS 3 3‐ is identical to the PS 4 3– , the peak of POS 3 3‐ could be eclipsed by the prevailing PS 4 3‐ tetrahedra (Figure 1c). [ 26,31,32 ] Interestingly, it is noted, at x = 0.02, there no other impure phase (e.g., P 2 S 7 4− (89 ppm), P 2 S 6 4− (106 ppm), and PO 4 3− (8 ppm)) is developed, substantiating the dopant has completely been dissolved in conductive framework and produce conductive crystalline PS 4 +POS 3 phase. After substitution, the intensity of peak at 86.3 ppm has been significantly increased could be revealed to the highest crystallinity, stronger PO bonding, and phase purity of Li 2.96 P 0.98 S 3.92 O 0.06 –Li 3 N GCE.…”

Chemical stability of Li4PS4I solid electrolyte against hydrolysis

“…The ionic conductivity of the samples containing the Li4PS4I crystal phase (1.3-1.5 × 10 −4 S cm −1 ) was slightly higher than that reported by Sedlmaier et al (0.64-1.2 × 10 −4 S cm −1 ) 24 . It is worth noting that even higher ionic conductivity in Li2S-P2S5-LiI solid electrolytes prepared by liquid-phase can be achieved by optimizing the synthesis conditions 29,30 .…”

Chemically Understanding the Liquid-Phase Synthesis of Argyrodite Solid Electrolyte Li6PS5Cl with the Highest Ionic Conductivity for All-Solid-State Batteries

“…The overpotential increment got worse when the current density increased to 0.2 mA·cm –2 , where the SE was already broken in this state. Our previous study regarding the addition of oxide compound of Li 3 PO 4 into Li 7 P 2 S 8 I (LPSI) using the liquid-phase shaking method resulted in magnificent lithium metal stability compared to pristine LPSI . This result was not consistent with Li 6 PS 5 Cl/SE THF+EtOH, which contains Li 3 PO 4 .…”

“…In the instance of Li 6 PS 5 Cl/SE THF+EtOH , Li 3 PO 4 was produced through a nucleophilic reaction that did not create chemical bonds with the argyrodite itself, as seen in the 31 P MAS-NMR result. There is no oxysulfide bond formed but simply the bond between PS 4 3– and PO 4 3– . The Li|Li 6 PS 5 Cl/SE ACN+PTH |Li symmetric cell showed identical overpotential profiles at 6 mV at the initial stage.…”