Ionic conductivity and crystal structure for the Li3−2xCr2−xTax(PO4)3 system
Date
2004Author
Hiromichi, Aono
Muhammad Asri, Idris, Dr.
Yoshihiko, Sadaoka
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The monoclinic phase (P21/n) was formed for 0≤x≤0.6 and the NASICON-type rhombohedral phase (R3̄c) was obtained for the region 0.8≤x≤1.2 in the Li3−2xCr2−xTax(PO4)3 system. The activation energy for Li+migration was ca. 0.45 eV for the monoclinic structure and ca. 0.36 eV for the rhombohedral structure. The maximum conductivity of 8.4×10−6 S cm−1 at 298 K was obtained for x=0.8 of the Li3−2xCr2−xTax(PO4)3system. The conductivity of LiCrTa(PO4)3 was enhanced about three to five times by the addition of the lithium salt due to the improvement of the sinterablity. The maximum conductivity was 2.4×10−5 S cm−1 at 298 K for LiCrTa(PO4)3–0.2Li3BO3.
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http://www.sciencedirect.com/science/article/pii/S0167273803005216http://dspace.unimap.edu.my:80/dspace/handle/123456789/35187