The Influence of Zirconium Salt Materials on the Structure and Properties of LiZr2(PO4)3 Lithium ion Solid Electrolyte

Abstract:

Samples of LiZr₂(PO₄)₃ compound with pure phase , adopting the method of solid phase and liquid phase method, were obtained by pressureless sintering from different zirconium salt raw materials. And LiZr₂(PO₄)₃Li-ion solid electrolytes were characterized through x-ray diffraction (XRD), scanning electron microscope (SEM) and electrochemical impedance (EIS) . Analyzing the results of the test, the influence of different zirconium salt raw materials on the structure and performance of LiZr₂(PO₄)₃ solid electrolytes is studied. A room-temperature stable α- LiZr₂(PO₄)₃phase(R-3c,a=8.8442?andc=22.264?) is prepared from zirconium acetate. While synthetic LiZr₂(PO₄)₃ prepared from the other three kinds of zirconium salt raw materials exist in triclinic phase . Rhombohedral phase LiZr₂(PO₄)₃ lithium ion solid state electrolyte sample prepared from different zirconium raw materials show the highest total conductivity of 2.25 × 10_-5 S/cm, and the activation energy is 0.28 eV.