ESR Methods for Assessing the Stability of Polymer Membranes Used in Fuel Cells

2006 ◽  
pp. 197-228 ◽  
Author(s):  
Emil Roduner ◽  
Shulamith Schlick
Keyword(s):  
Fuel Cells ◽  
Polymer Membranes ◽  
The Stability

scholarly journals Integration of Stable Ionic Liquid-Based Nanofluids into Polymer Membranes. Part I: Membrane Synthesis and Characterization

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 607
Author(s):  
Carolina Hermida-Merino ◽  
Fernando Pardo ◽  
Gabriel Zarca ◽  
João M. M. Araújo ◽  
Ane Urtiaga ◽  
...  
Keyword(s):  
Polymer Membranes ◽  
Small Addition ◽  
Polymeric Membranes ◽  
Synthesis And Characterization ◽  
Complete Disappearance ◽  
Optical Profilometry ◽  
Scanning Calorimetry ◽  
Exfoliated Graphene ◽  
The Stability ◽  
Scanning Electron

In this work, polymeric membranes functionalized with ionic liquids (ILs) and exfoliated graphene nanoplatelets (xGnP) were developed and characterized. These membranes based on graphene ionanofluids (IoNFs) are promising materials for gas separation. The stability of the selected IoNFs in the polymer membranes was determined by thermogravimetric analysis (TGA). The morphology of membranes was characterized using scanning electron microscope (SEM) and interferometric optical profilometry (WLOP). SEM results evidence that upon the small addition of xGnP into the IL-dominated environment, the interaction between IL and xGnP facilitates the migration of xGnP to the surface, while suppressing the interaction between IL and Pebax®1657. Fourier transform infrared spectroscopy (FTIR) was also used to determine the polymer–IoNF interactions and the distribution of the IL in the polymer matrix. Finally, the thermodynamic properties and phase transitions (polymer–IoNF) of these functionalized membranes were studied using differential scanning calorimetry (DSC). This analysis showed a gradual decrease in the melting point of the polyamide (PA6) blocks with a decrease in the corresponding melting enthalpy and a complete disappearance of the crystallinity of the polyether (PEO) phase with increasing IL content. This evidences the high compatibility and good mixing of the polymer and the IoNF.

Exploring the Stability of Direct Ethanol Solid Oxide Fuel Cells at Intermediate Temperature

2021 ◽  
Vol 103 (1) ◽  
pp. 169-178
Author(s):  
Fabio Coral Fonseca ◽  
Francisco Tabuti ◽  
Tamara Moraes ◽  
Ricardo Abe ◽  
Rafael Mariz Guimarães ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
The Stability

scholarly journals Radiolytic synthesis and characterization of PVA and chitosan based conductive polymer membranes for alkaline fuel cells

Tehnika ◽  
2014 ◽  
Vol 69 (2) ◽  
pp. 190-195
Author(s):  
Ivan D. Stoševski ◽  
Jelena I. Krstić ◽  
Nikola Č. Vokić ◽  
Zorica M. Kačarević-Popović ◽  
Šćepan S. Miljanić
Keyword(s):  
Fuel Cells ◽  
Conductive Polymer ◽  
Polymer Membranes ◽  
Synthesis And Characterization ◽  
Alkaline Fuel Cells ◽  
Radiolytic Synthesis

Surface Fluorination to Boost the Stability of the Fe/N/C Cathode in Proton Exchange Membrane Fuel Cells

2017 ◽  
Vol 5 (14) ◽  
pp. 1914-1921 ◽  
Author(s):  
Yu-Cheng Wang ◽  
Peng-Fei Zhu ◽  
Hong Yang ◽  
Long Huang ◽  
Qi-Hui Wu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
The Stability ◽  
Exchange Membrane ◽  
Surface Fluorination
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