Synthesis and properties of poly(1,3-dioxolane) in situ quasi-solid-state electrolytes via a rare-earth triflate catalyst.

We report a rare-earth triflate catalyst Sc(OTf)3 for the ring-opening polymerization of 1,3-dioxolane and the in situ production of a quasi-solid-state poly(1,3-dioxolane) electrolyte, which not only demonstrates a superior ionic conductivity of 1.07 mS cm-1 at room temperature, but achieves dendrite-free lithium deposition and a high Coulombic efficiency of 92.3% over 200 Li plating/striping cycles.

A facile method for the synthesis of a sintering dense nano-grained Na3Zr2Si2PO12 Na+-ion solid-state electrolyte.

We report dense Na3Zr2Si2PO12 with an average grain size of 546 ± 58 nm and prepared by a facile method. The nano-grained Na3Zr2Si2PO12 exhibits an extremely high conductivity of 1.02 × 10-3 S cm-1 and low interfacial resistance of 35 Ω cm2 at 25 °C. Such processing facilitates the exploration of nanocrystalline conductors.