Thermoelectric power studies on Ag7I4VO4. superionic conductor have been carried out in the temperature range 25 to 60°C. Thermo-electric power is found to vary linearly with the inverse of the absolute temperature, and can be expressed by the equation -θ = [(0.182 × 103/T) + 0.276] mV/K. The heat of transport is nearly equal to the activation energy of Ag+ ion migration calculated from the conductivity plots indicating that the material has an average structure. © 1986.

Krishnaswamy Hariharan

Rajiv Kaushik

SILVER COMPOUNDS - ELECTRIC CONDUCTIVITY

SOLIDS - IONIC CONDUCTION

SILVER ION CONDUCTORS

SUPERIONIC CONDUCTOR

Thermoelectric power

Superconducting materials

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Thermoelectric power of superionic conductor Ag7I4VO4

Materials Chemistry and Physics

A new, glassy, solid electrolyte system CdI2-Ag2O-V2O5-B2 O3 has been synthesized and the composition with high ionic conductivity is used as an electrolyte in a solid-state cell. The silver ion transport number of this electrolyte is nearly unity. The thermoelectric power varies inversely with absolute temperature. The discharge and current-voltage characteristics are examined for different negative and positive electrodes to evaluate the applicability of these cells as power sources for low-energy applications. © 2005 Elsevier B.V. All rights reserved.

Journal of Power Sources

Study of xCdI2-(100 - x)[2Ag2O-(0.7V2O5-0.3B2 O3)] electrolyte system for application in solid-state primary cells

Fast ionic conduction in the AgI-Ag2O-CrO3 electrolyte system has been studied and the influence of glass former to glass modifier ratio on the conduction phenomena has been reported. These electrolytes have been characterised by X-ray diffraction, electrical and electronic conductivities, complex impedance, thermoelectric power and infrared absorption techniques. The possible structural changes occurring in the Ag2O-CrO3 matrix on the variation of the glass former to modifier ratio have been discussed.

Journal	Materials Chemistry and Physics
ISSN	02540584
Open Access	No