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李文龙,刘欢.锆盐原料不同对LiZr2(PO4)3锂离子固体电解质结构及性能的影响[J].稀有金属材料与工程(英文),2019,48(4):1298~1303.[liuhuan.The Influence of Zirconium Salt Materials on the Structure and Properties of LiZr2(PO4)3 Lithium ion Solid Electrolyte[J].Rare Metal Materials and Engineering,2019,48(4):1298~1303.]
The Influence of Zirconium Salt Materials on the Structure and Properties of LiZr2(PO4)3 Lithium ion Solid Electrolyte
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Received:August 28, 2017  Revised:September 30, 2017
DOI:
Key words: LiZr2(PO4)3  Li-ion solid electrolyte  ionic conductivity  Li-ion secondary battery
Foundation item:陕西省科学技术研究发展计划项目(项目号2016GY170)
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liuhuan  
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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.