Structural, thermal and conductive properties of Bi4-xMxV2O11 (M = La, Gd; 0 <= x <= 0.4) compounds

., Deepti and ., Ravikant and Singla, M.L. and Singh, K. (2009) Structural, thermal and conductive properties of Bi4-xMxV2O11 (M = La, Gd; 0 <= x <= 0.4) compounds. Current Applied Physics, 9 (6). pp. 1467-1471. ISSN 1567-1739

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Abstract

Bi4−xMxV2O11 (M = La, Gd) was prepared by solid state reactions. The amount of La and Gd in the (Bi4−xMxV2O11) was varied in the range of (0 <= x <= 0.4). The addition of La and Gd to Bi4V2O11 electrolyte was found to stabilize the β crystalline phase for x ⩽ 0.3. In addition, the phase transition corresponding β- to γ-phases are evident in the ionic conductivity plots as well as in XRD, DSC profiles of x ⩾ 0.3 samples. The highest ionic conductivity was observed in Bi3.9La0.1V2O11 and Bi3.8Gd0.2V2O11 samples in the range of 10−3–10−4 S/cm for 700–500 °C. These results were supported by impedance spectroscopy, X-ray diffraction (XRD) and differential scanning calorimetry (DSC).

Item Type: Article
Uncontrolled Keywords: Bismuth vanadate; Solid oxide fuel cell; Electrolyte
Subjects: CSIO > Chemistry
Divisions: Agri - Instrumentation
Depositing User: Ms T Kaur
Date Deposited: 31 Jan 2012 16:09
Last Modified: 31 Jan 2012 16:09
URI: http://csioir.csio.res.in/id/eprint/220

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