NDLI: Kinetics of decomposition of the solid electrolyte RbCu$_{4}$Cl$_{3}$I$

Content Provider	Springer Nature Link
Author	Ostapenko, G. I. Ostapenko, L. A. Veselova, L. G.
Copyright Year	2001
Abstract	The processes of electrochemical decomposition of the solid electrolyte RbCu$_{4}$Cl$_{3}$I$_{2}$ at the vitreous carbon electrode and chemical decomposition of RbCu$_{4}$Cl$_{3}$I$_{2}$ by iodine has been investigated. The anodic decomposition of the electrolyte occurs in two steps. At first, the oxidizing electrode reaction of Cu$^{+}$ ions up to Cu$^{2+}$ ions takes place at potentials higher than 0.57 V and onto the electrode surface the layer of decomposition products is formed, including the compound of divalent copper RbCuCl$_{3}$. Then the oxidizing reaction of I ions occurs at potentials higher than approximately 0.67 V with deposition of the iodine layer onto the electrode surface. The deposition rate of the layers of decomposition products is controlled by instantaneous nucleation and two-dimensional growth of the deposit. It was shown that slow diffusion of the iodine in the reaction product layer is a limiting step in the chemical interaction of iodine with RbCu$_{4}$Cl$_{3}$I$_{2}$. For the compressed RbCu$_{4}$Cl$_{3}$I$_{2}$ sample investigated, iodine diffusion coefficient was calculated to be 6.2×10$^{−7}$ cm$^{2}$ s$^{−1}$. Iodine loss from the glassy carbon surface is about 1.1×10$^{−4}$ g cm$^{−2}$ s$^{−1}$ at the thickness of the RbCu$_{4}$Cl$_{3}$I$_{2}$ sample is equal to 2 mm.
Starting Page	67
Ending Page	71
Page Count	5
File Format	PDF
ISSN	09477047
Journal	Ionics
Volume Number	7
Issue Number	1-2
e-ISSN	18620760
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biomedicine general Analytical Chemistry Physical Chemistry Electrochemistry Optical and Electronic Materials
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Engineering Materials Science Chemical Engineering

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