Thermogalvanic cells: equations for special states and ionic mobilities.
J Electrochem Soc 1970 Mar; 117(3):314-318
Linear phenomenological equations for processes in thermogalvanic cells are set up in two forms. One form is used for examining the nature of six special states: the thermal and shorted initial states, and the isothermal, thermal, shorted, and adiabatic steady states. With aqueous electrolytes the following are predicted: a large variation in the Soret effect and a moderate variation in the Peltier heat with changes in electrical state; a difference between electrical and thermal transference numbers; and a small temperature gradient set up by the flow of current under adiabatic conditions. The other form of the equations is used for examining the mobility of ions in a thermal field and a comparison with the mobility in an electrical field or a concentration gradient. Introduction of electrostatic potential as a variable suggests a way of measuring thermodynamic properties of individual ions.
Mining-industry; Mineral-processing; Metals;
Author Keywords: thermoelectricity; cells (electric); ionic conductivity; mathematical analysis; thermodynamics; electric potential; equations of state; initial state; ionic activity coefficient; ionic entropy; ionic mobility; Peltier heat; Soret coefficient; steady state; thermal emf; thermogalvanic cell
Philip B. Lorenz, Bartlesville Petroleum Research Center, Bureau of Mines, U. S. Department of the Interior, Bartlesville, Oklahoma
OP; Journal Article
Journal of the Electrochemical Society