The lithium-ion-conducting ceramic composite based on LiTi2(PO4)3 with addition of LiF


The ceramic composites formed in the system LiTi2(PO4)3–LiF were studied by means of X-ray diffractometry, thermogravimetry, scanning electron microscopy, impedance spectroscopy, and density methods. Introduction of the foreign phase into the polycrystalline LiTi2(PO4)3-based material resulted in significant reduction of grain boundary resistance. However, a slight decrease of the conductivity could be observed when higher contents of lithium fluoride additive were present in the composite. The maximum total conductivity of ca. 3.08 × 10−5 S cm−1 was obtained for lithium titanium phosphate (LTP)–0.1LiF sample sintered at 1073 K in comparison to 5.15 × 10−8 S cm−1 for the pure ceramic LTP. The most dense material was obtained after sintering at 1073 K.

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Kwatek, K., Nowiński, J.L. The lithium-ion-conducting ceramic composite based on LiTi2(PO4)3 with addition of LiF. Ionics 25, 41–50 (2019).

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  • Solid electrolyte
  • Impedance spectroscopy
  • Grain boundary conductivity enhancement
  • Composite
  • Ceramic