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XRD, conductivity and FTIR studies on LiI-Li2WO4-Li3PO4 prepared by low temperature sintering

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Abstract

Different amounts of Li3PO4 were mixed to a fixed ratio of LiI:Li2WO4, ground and pelletised before subjected to sintering at 70°C for 7 days. XRD shows that the product formed after sintering process is most likely Li6P4W8O32 due to peaks present at 10.6°, 22.4°, 24.0°, 24.4, 26.2°, 32.4° and 34.0°. Conductivity studies show that the sample with 25 wt.% Li3PO4 exhibits the highest room temperature conductivity of 3.42×10−3 Scm−1. Conductivity is expected to occur through channel-like structures which could have formed due to corner or edge sharing of polyhedra. FTIR studies have shown the existence of WO4 tetrahedra and WO6 octahedral at 850 cm−1 and 952 cm−1, and phosphate tetrahedral at 564 cm−1, 700 cm−1, 890 cm−1 and 1030 cm−1.

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Authors and Affiliations

  1. Faculty of Applied Science, MARA University of Technology, 40500, Shah Alam, Selangor D.E., Malaysia

    A. H. Ahmad

  2. Physics Department, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia

    A. K. Arof

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  1. A. H. Ahmad
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Ahmad, A.H., Arof, A.K. XRD, conductivity and FTIR studies on LiI-Li2WO4-Li3PO4 prepared by low temperature sintering. Ionics 10, 200–205 (2004). https://doi.org/10.1007/BF02382817

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  • DOI: https://doi.org/10.1007/BF02382817

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