Influence of the composition on the copper diffusion in copper sulfides - Study by impedance spectroscopy

被引:15
作者
Cassaignon, S
Sanchez, S
Guillemoles, JF
Vedel, J
Meier, HG
机构
[1] ENSCP, Lab Electrochim & Chim Analyt, UMR 7575, F-75231 Paris 05, France
[2] Pontificia Univ Catolica Valparaiso, Fac Ciencias Basicas & Matemat, Inst Quim, Lab Electrochim, Valparaiso, Chile
关键词
D O I
10.1149/1.1392691
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Diffusion of copper in copper sulfides, Cu2-xS is studied as a function of x by means of electrochemical impedance spectroscopy (EIS) at room temperature. Copper sulfide compositions were determined from electromotive force determinations in the Cu\Cu(2+)aq\Cu2-xS galvanic cell. The same cell was used to change the x value by imposing a potential different of the equilibrium one. Experimental EIS determinations relate diffusion coefficients and concentrations of diffusing species. The experimental data are discussed accordingly. (C) 1939 The Electrochemical Society. S0013-4651(99)01-087-3. All rights reserved.
引用
收藏
页码:4666 / 4671
页数:6
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