Electrical Conductivity and Structural Studies on the Binary System BiI3-Ag2SO4

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A new solid-state pseudo binary system BiI3_-Ag2SO4 involving bismuth triiodide (BiI3) and a silver oxysalt namely silver sulphate (Ag2SO4) has been prepared using rapid melt-quenching technique. AC conductivity studies have been carried out on the nine different samples of the (BiI3)x –- (Ag2SO4)(1-x) system with compositions corresponding to x=0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8 and 0.9 mole fraction at temperatures ranging from room temperature (298 K) to 433K. The bulk resistance values estimated using complex impedance plots indicated that electrical conductivity of the synthesized solid specimens would vary from 2.9 x10-2 to 3.4 x10-6Scm-1 thus suggesting the present system to be ionic in nature. The extent of ionic conduction due to Ag + cation has also been analyzed using Wagner’s dc polarization technique whereas detailed structural characteristics of the various compositions derived from Fourier transform infrared (FTIR) spectroscopy and features of surface morphology of these samples obtained using scanning electron microscopy (SEM) have further supported the ionic nature of the chosen system and suggested possible application as a solid electrolyte in electrochemical devices.

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Edited by:

D. Rajan Babu

Pages:

521-525

Citation:

S. A. Suthanthiraraj and A. Saleem, "Electrical Conductivity and Structural Studies on the Binary System BiI3-Ag2SO4", Advanced Materials Research, Vol. 584, pp. 521-525, 2012

Online since:

October 2012

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$38.00

[1] A.R. West, Basic Solid State Chemistry, John Wiley & Sons, Ltd, Chichester, England, (1996).

[2] H. Takahashi, H. Nakanii, T. Sakuma, Effect of Iodide addition on the ionic conduction in silver metaphosphate glasses, Solid State Ionics 176 (2005) 1067-1072.

DOI: https://doi.org/10.1016/j.ssi.2005.01.007

[3] S. Austin Suthanthiraraj and Ayesha Saleem: submitted to American Institute of Physics (2011).

[4] I. M. Hodge, M. D. Ingram, A. R. West, Impedance and Modulus Spectroscopy of Polycrstalline Solid Electrolytes,J. Electroanal. Chem. 74(1976) 125-143.

[5] S. Austin Suthanthiraraj, R. Mala, Preparation and characterization of fast ionic solids in new ternary system CuI- Ag2O-PbO2, Solid State Ionics 144(2001) 143-149.

DOI: https://doi.org/10.1016/s0167-2738(01)00905-5

[6] T. Minami and M. Tanaka, Structure and Ionic Transport of Superionic conducting glasses in the system AgI-Ag2O-MoO3, J. Non-Cryst. Solids, 38/39 (1980) 289-294.

DOI: https://doi.org/10.1016/0022-3093(80)90433-0

[7] T. Minami, Y. Takuma and M. Tanaka, J. Electrochem. Soc., 124(1977) 1659.

[8] K. Nakamoto, Infrared and Raman Spectra of Inorganic and coordination compounds-Part A: Theory and Applications in Inoraganic Chemistry, fifth ed., Wiley, New York , (1997).