Online estimation of the electrochemical impedance of polymer electrolyte membrane fuel cells using broad-band current excitation

2018 ◽  
Vol 405 ◽  
pp. 150-161 ◽  
Author(s):  
D. Ritzberger ◽  
M. Striednig ◽  
C. Simon ◽  
C. Hametner ◽  
S. Jakubek
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Electrochemical Impedance ◽  
Polymer Electrolyte Membrane ◽  
Broad Band ◽  
Online Estimation ◽  
Electrolyte Membrane

Functionalized ORMOSIL-Based Hybrid Membranes for Polymer Electrolyte Membrane Fuel Cells

2005 ◽  
Vol 885 ◽  
Author(s):  
Silvia Licoccia ◽  
Alessandra D'Epifanio ◽  
Maria Luisa Di Vona ◽  
Zakarya Ahhmed ◽  
Serafina Belitto ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Electrochemical Impedance ◽  
Polymer Electrolyte Membrane ◽  
Composite Membranes ◽  
Electrochemical Characteristics ◽  
Electrolyte Membrane ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
High Degree

ABSTRACTSulfonated poly ether ether ketone (SPEEK) with a high degree of sulfonation (DS = 0.9) was mixed with a modified silane bearing a sulfonic acid function (sulfonated diphenylsilanediole, SDPDO).Homogeneous composite membranes with several SPEEK:SDPDO ratios, were obtained. The addition of the ormosil significantly improved the water uptake and solubility properties of pure SPEEK.The structural and electrochemical characteristics of the composite membranes were investigated by means of thermogravimetric analysis (TG), field emission scanning electron microscopy (FE-SEM), and electrochemical impedance spectroscopy (EIS). The conductivity values of the composites SPEEK/SDPDO demonstrated that they possess good proton transport characteristics, thus being suitable for application in Polymer Electrolyte Fuel Cells operating at intermediate temperature.

Anode Monitoring By Electrochemical Impedance Spectroscopy in Polymer Electrolyte Membrane Fuel Cells

2020 ◽  
Vol MA2020-01 (40) ◽  
pp. 1803-1803
Author(s):  
Salah Touhami ◽  
Laetitia Dubau ◽  
Julia Mainka ◽  
Marian Chatenet ◽  
Jérôme Dillet ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Electrochemical Impedance ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane
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