Electrical and structural study of new antimony iodide-doped silver sulfate electrolytes
- 170 Downloads
This paper deals with the preparation and ion transport characteristics of a series of compositions in the solid-state mixed system [(SbI3)100 − x –(Ag2SO4) x ] where x = 10, 20, 30, 40, 50, 60, 70, 80, and 90 mol%, respectively. These samples have been characterized by powder X-ray diffraction, differential scanning calorimetry, Fourier transform infrared spectroscopy, ionic transport number, and impedance spectroscopic measurements. Among various compositions investigated, significant ones have possessed AgI as one of the constituent phases. Detailed electrical conductivity studies have shown that the observed ionic conductivity attains a maximum value of 2.1 × 10−3 S cm−1 at room temperature (298 K) for the typical composition containing x = 60 mol%, whereas the corresponding values of transport number of silver ion as determined by Wagner’s and EMF methods are found to be nearly unity. Interestingly, the enhanced ionic conduction of the chosen composite system may be attributed to the feasibility of formation of AgI in several compositions as a consequence of ion exchange reaction between SbI3 and Ag2SO4.
KeywordsAntimony iodide Silver sulfate Ionic conductor Phase transition X-ray diffraction analysis
We thankfully acknowledge the DSC facility provided by SAIF-IITM and the SEM facility provided by National Centre for Nanoscience and Nanotechnology, University of Madras.
- 3.Bruce PG (1995) Solid state electrochemistry. Cambridge University Press, CambridgeGoogle Scholar
- 4.Chowdari BVR, Radhakrishna S (1986) Materials for sold state batteries. World Scientific, SingaporeGoogle Scholar
- 8.Suthanthiraraj SA, Vinod M (2005) Indian J Phys 79:753–756Google Scholar
- 9.Suthanthiraraj SA, Ganeshkumar AC (2003) Mater Sci Eng B100:156–162Google Scholar
- 11.Suthanthiraraj SA, Sarumathi R (2012) Appl Nanosci. doi: 101007/s13204-012-0155
- 13.Suthanthiraraj SA, Shankaran VS (2012) Ionics. doi: 10.1007/s11581-012-0804-y
- 14.JCPDS-International Centre for Diffraction data (1983) Selected powder diffraction data for forensic materials: search manual, JCPDS International Centre for Diffraction Data, Pennsylvania (JCPDS file no.00-009 0399) p 430Google Scholar
- 15.JCPDS-International Centre for Diffraction data (1983) Selected powder diffraction data for forensic materials: search manual, JCPDS International Centre for Diffraction Data, Pennsylvania (JCPDS file no.00-009 0374) p 410Google Scholar
- 21.Macdonald JR (ed) (1987) Impedance spectroscopy. Wiley, New York, pp 12–23Google Scholar
- 24.Seydei MKP, Suthanthiraraj SA (1993) Bull Electrochem 9:313–315Google Scholar