Direct evidence for purely silver ion conduction in Cul-doped silver oxysalt superionic systems: Combined electrolysis and EDS studies

被引：17

作者：

Murugesan, S. ^{[1
]}

Bergman, B. ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden

来源：

ELECTROCHIMICA ACTA | 2007年 / 52卷 / 28期

关键词：

superionic; EDS; solid electrolytes; ionic transport number; silver ion conducting;

D O I：

10.1016/j.electacta.2007.06.080

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Maiden attempt has been made for the direct estimation of the contributions of silver and copper ions to the ionic conductivity in superionic solids obtained in CuI-doped silver oxysalt systems. The application of the combined electrolysis and EDS techniques towards qualitative and quantitative analyses of the mobile ionic species in solid electrolyte systems having more than one possible mobile ion is reported. These studies confirmed that these electrolyte materials are purely Ag+ conducting up to 50 mol% CuI in xCuI-(100-x)[2Ag(2)O-0.7V(2)O(5)-0.3B(2)O(3)] and xCuI-(100 - x)[Ag2O-0.7MoO(3)-0.3WO(3)] systems and small fraction of t(Cu+) exists above 60 mol% CuI. These solid electrolyte materials exhibited a high ionic transport numbers (t(i)) of >0.985 and the t(i) increases when two glass formers are used. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：8064 / 8068

页数：5

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