Impedance Characterization of Li Ion Transport at the Interface between Laminated Ceramic and Polymeric Electrolytes

被引：39

作者：

Tenhaeff, W. E. ^{[1
]}

Perry, K. A. ^{[1
]}

Dudney, N. J. ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2012年 / 159卷 / 12期

关键词：

COMPOSITE ELECTROLYTES; PHASE-DIAGRAMS; CONDUCTIVITY; BEHAVIOR;

D O I：

10.1149/2.063212jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Large, dominating resistances to lithium transport at interfaces between polymeric and ceramic electrolytes is a significant limitation that must be resolved for the development of composite solid electrolytes. Laminated bilayers of lithium ion conducting glass ceramics and polymer electrolytes were studied in order to provide well-defined interfaces for the quantification of interfacial resistances. A completely dry fabrication protocol was developed to ensure intimate contact between the two phases. Interfacial resistances were then characterized by impedance spectroscopy, which revealed small, statistically significant resistances above the melting temperatures of the polymer electrolytes. These interfacial processes did not dominate the overall resistive response, representing a significant improvement over previous observations. Characterization of the laminated electrolytes by scanning electron microscopy (SEM) revealed intimate interfacial contact between the phases, and energy dispersive X-ray spectroscopy (EDS) confirmed the absence of significant compositional deviations at the interfaces. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.063212jes] All rights reserved.

引用

页码：A2118 / A2123

页数：6

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