New lithium-ion conductors based on the NASICON structure

Thangadurai, Venkataraman ; Shukla, Ashok K. ; Gopalakrishnan, Jagannatha (1999) New lithium-ion conductors based on the NASICON structure Journal of Material Chemistry, 9 . pp. 739-741. ISSN 0959-9428

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Lithium-ion conduction in mixed-metal phosphates, LiMVMIII(PO4)3 [MV=Nb, Ta; MIII=Al, Cr, Fe], possessing the rhombohedral (R3c) NASICON structure has been investigated. Among the phosphates investigated, LiTaAl(PO4)3 exhibits the highest conductivity, σ ≈ 1.0×10-2 S cm-1 at 350°C (Ea=0.47 eV), comparable to the conductivity of LiTi2(PO4)3. Unlike LiTi2(PO4)3 which contains lithium-reducible TiIV, LiTaAl(PO4)3 contains stable TaV and AlIII oxidation states and hence deserves further attention towards tailoring new lithium-ion conductors for application as electrolytes in solid state lithium batteries.

Item Type:Article
Source:Copyright of this article belongs to Royal Society of Chemistry.
ID Code:12207
Deposited On:10 Nov 2010 04:45
Last Modified:16 May 2016 21:35

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