guest ::
| Home > Publications database > Impedance characterization of supported oxygen ion conducting electrolytes |
| Home > Publications database > Impedance characterization of supported oxygen ion conducting electrolytes |
| Journal Article | FZJ-2019-01401 |
;
2019
Elsevier Science
Amsterdam [u.a.]
This record in other databases: 
Please use a persistent id in citations: http://hdl.handle.net/2128/21864 doi:10.1016/j.ssi.2019.01.031
Abstract: Electrochemical impedance spectroscopy is a widely used tool to study electrochemical reactions in batteries, fuel cells and other electrochemical energy conversion devices. However, conduction processes in the electrolyte of high temperature fuel or electrolysis cells (SOFC / SOEC) are inacessible during operation, severely restricting the information that can be obtained about performance and degradation of the electrolyte. Using the distribution function of relaxation times (DRT), we study the ionic conduction properties and degradation phenomena in multi-layered solid electrolytes, ex situ and at low temperatures. The investigation of full cells in air enables a detailed analysis of the conductivity of supported electrolytes as thin as 1 μm, as well as the relative contributions of multilayered electrolytes. Furthermore, three case studies are presented concerning the degradation mechanism in SOFC and SOEC operation, showcasing the ability of this technique to distinguish the effects of grain boundary contamination, formation of solid solutions and the formation of porosity on the ionic conductivity of thin, supported electrolytes.Keywords: SOFC; SOEC; Impedance spectroscopy; DRT; electrolyte;
; 
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz
; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection
|
The record appears in these collections: |
PDF 
PDF (PDFA)Fulltext by OpenAccess repository