Thermodynamics of Binary and Ternary Copper-, Cadmium,and Indium-Containing Semiconducting Phases: An Electrochemical Study |
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Authors: | Email author" target="_blank">A?P?LeushinaEmail author L?A?Kolesnikova E?V?Makhanova V?P?Zlomanov |
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Institution: | (1) Vyatka State University, ul. Moskovskaya 36, Kirov, 610000, Russia;(2) Moscow State University, Vorob’evy Gory 1, Moscow, 119992, Russia |
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Abstract: | Optimum compositions of ion-selective membranes in quasi-binary systems CuCl-CdCl2, LiCl-CdCl2, and In2S3-InCl3 are selected by a method of coulometric titration in cells with solid electrolytes. Transport numbers for ions are close to unity for the optimum compositions; transport numbers for electrons are vanishingly small (
≺10−3 to 10−4); the electroconductivity is equal to ≈ 10−3 S cm−1 at 200°C; the diffusion coefficients for the current-producing component are on the order of 10−6 to 10−7 cm2 s−1. When using a solid electrolyte of the composition CuCl-CdCl2, which contains 30 mol % CdCl2, methods of emf and electroconduction reveal that the region of homogeneity of copper(I) selenide falls in the region of compositions Cu1.33Se-Cu2.67Se.__________Translated from Elektrokhimiya, Vol. 41, No. 6, 2005, pp. 721–727.Original Russian Text Copyright © 2005 by Leushina, Kolesnikova, Makhanova, Zlomanov.Published on the basis of a report delivered at the VII Meeting on Fundamental Problems in Solid-State Ionics (Chernogolovka-2004). |
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Keywords: | coulometric titration quasi-binary salt system nonstoichiometric semiconductor solid electrolyte character of defects |
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