DC POLARIZATION OF POLYMER ELECTROLYTES

被引：27

作者：

BRUCE, PG

HARDGRAVE, MT

VINCENT, CA

机构：

[1] Centre for Electrochemical and Materials Sciences, Department of Chemistry, University of St. Andrews

来源：

ELECTROCHIMICA ACTA | 1992年 / 37卷 / 09期

关键词：

POLYMER ELECTROLYTE; ION ASSOCIATION; TRANSFERENCE NUMBER; DC POLARIZATION;

D O I：

10.1016/0013-4686(92)80102-R

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The steady-state current flowing in a polymer electrolyte when a constant potential is applied to a symmetric cell of the type M(s)\M+X-(polymer)\M(s) has been determined as a function of both the magnitude of the dc potential and the salt concentration in amorphous PEO:LiCF3SO3 and PEO:LiClO4 systems. Such measurements may be used to determine a practical electrolyte parameter, the current fraction, which is defined as the ratio of the current flowing when the cell is passing a steady state current following establishment of a stable concentration gradient, to the current flowing in the absence of a concentration gradient. In addition, the range of linear steady state current-applied potential difference response has been evaluated, which can, under certain circumstances, be interpreted in terms of the extent of ion association in the polymer electrolyte.

引用

页码：1517 / 1520

页数：4