Modeling the impedance spectra of mixed conducting thin films with exposed and embedded current collectors

2017 ◽  
Vol 19 (38) ◽  
pp. 26310-26321 ◽  
Author(s):  
Jiapeng Liu ◽  
Francesco Ciucci
Keyword(s):  
Thin Films ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Impedance Spectra ◽  
Current Collectors ◽  
The Impact

This article studies the electrochemical impedance spectroscopy response of mixed ionic-electronic conducting (MIEC) films with embedded current collectors (CCs). Even though the MIEC surface is fully exposed, the impact of the CCs can be significant.

Use and misuse of electrochemical impedance spectroscopy in PEFC research

2019 ◽  
Author(s):  
Pierre Boillat ◽  
Lorenz Gubler ◽  
Felix N. Büchi ◽  
Thomas J. Schmidt
Keyword(s):  
Fuel Cells ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Electrochemical Impedance ◽  
Polymer Electrolyte Fuel Cells ◽  
Impedance Spectra ◽  
Electrochemical Impedance Spectra ◽  
Comprehensive Review ◽  
Research Show

In this presentation, two important pitfalls ocuring during the analysis of electrochemical impedance spectra (EIS) of polymer electrolyte fuel cells (PEFCs) are discussed. Based on very simple considerations, some commonly found interpretation statements are identified as wrong. A comprehensive review of the papers published during the year 2018 using EIS in PEFC research show that such wrong statements are not occasional, but frequently occurring in the peer reviewed literature. At the end of the presentation, solution are proposed to increase the awareness to the risks of wrong EIS interpretations.

scholarly journals Electrochemical Impedance Spectroscopy as a Diagnostic Tool in Polymer Electrolyte Membrane Electrolysis

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1368 ◽  
Author(s):  
Stefania Siracusano ◽  
Stefano Trocino ◽  
Nicola Briguglio ◽  
Vincenzo Baglio ◽  
Antonino Aricò
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Diagnostic Tool ◽  
Electrochemical Impedance ◽  
Polymer Electrolyte Membrane ◽  
Membrane Electrode ◽  
Short Side ◽  
Electrolyte Membrane ◽  
The Impact

Membrane–electrode assemblies (MEAs) designed for a polymer electrolyte membrane (PEM) water electrolyser based on a short-side chain (SSC) perfluorosulfonic acid (PFSA) membrane, Aquivion®, and an advanced Ir-Ru oxide anode electro-catalyst, with various cathode and anode noble metal loadings, were investigated. Electrochemical impedance spectroscopy (EIS), in combination with performance and durability tests, provided useful information to identify rate-determining steps and to quantify the impact of the different phenomena on the electrolysis efficiency and stability characteristics as a function of the MEA properties. This technique appears to be a useful diagnostic tool to individuate different phenomena and to quantify their effect on the performance and degradation of PEM electrolysis cells.

scholarly journals Combination of Solid-State and Electrochemical Impedance Spectroscopy To Explore Effects of Porosity in Sol–Gel-Derived BaTiO3 Thin Films

ACS Omega ◽  
2018 ◽  
Vol 3 (6) ◽  
pp. 6880-6887
Author(s):  
Joshua Whittam ◽  
Andrew L. Hector ◽  
Christopher Kavanagh ◽  
John R. Owen ◽  
Gillian Reid
Keyword(s):  
Thin Films ◽  
Electrochemical Impedance Spectroscopy ◽  
Solid State ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Sol Gel
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