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Nasicon materials; X-ray diffraction; lithium titanium phosphate; vanadium doped LiTi₂(PO₄)₃.

Vanadium substituted LiTi₂(PO₄)₃ (LTP) samples of composition of Li_1–𝑥[Ti_2–𝑥V_𝑥](PO₄)₃ (𝑥 = 0.0, 0.05, 0.10 and 0.15) have been prepared by solid-state reaction method. XRD data for these compositions indicated the formation of phase pure materials of rhombohedral structure with space group 𝑅$\bar{3}$𝑐 (167). Microstructural studies by scanning electron microscope indicated particle size in the range of 0.5–1 𝜇m. Electrochemical impedance studies showed that ionic conductivity is high for 𝑥 = 0.10 composition. a.c. and d.c. conductivity results up to 573 K are in accordance with the Jonscher’s power law. Cyclic voltammetry study showed its electrochemical stability in the voltage range from 0.5 to 3.5 V.

A Venkateswara Rao¹ V Veeraiah¹ A V Prasada Rao² B Kishore Babu³ B Swarna Latha¹ K Rama Rao¹

1. Department of Physics, Andhra University, Visakhapatnam 530 003, India
2. Department of Inorganic and Analytical Chemistry, Andhra University, Visakhapatnam 530 003, India
3. Department of Engineering Chemistry; Andhra University, Visakhapatnam 530 003, India

Manuscript received

30 April 2013

Manuscript revised

23 September 2013