XRD, conductivity and FTIR studies on LiI-Li2WO 4-Li3PO4 prepared by low temperature sintering

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 Li6P4W 8O32 due to peaks present at 10.6°, 22.4°, 24.0°, 24.4, 26.2°, 32.4° and 34.0...

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Bibliographic Details
Published in:Ionics
Main Author: 2-s2.0-24644504239
Format: Article
Language:English
Published: 2004
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-24644504239&doi=10.1007%2fBF02382817&partnerID=40&md5=2a95a2cfee59ce9bc53f4d9dd3247301
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Summary: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 Li6P4W 8O32 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.
ISSN:9477047
DOI:10.1007/BF02382817