Effect of Water on the Changes in Morphology and Proton Conductivity for the Highly Crystalline Hydrocarbon Polymer Electrolyte Membrane for Fuel Cells

2009 ◽  
Vol 113 (49) ◽  
pp. 15921-15927 ◽  
Author(s):  
Mohammad A. Barique ◽  
Libin Wu ◽  
Naohiko Takimoto ◽  
Koh Kidena ◽  
Akihiro Ohira
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane ◽  
Effect Of Water ◽  
Hydrocarbon Polymer

Polymer Electrolyte Membranes

2019 ◽  
Vol 23 ◽  
pp. 82-89
Author(s):  
Ponnusamy Senthil Kumar ◽  
C. Femina Carolin
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Chemical Structure ◽  
Polymer Electrolyte Membrane ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membrane ◽  
Chemical Structures ◽  
Different Types ◽  
Electrolyte Membranes

Polymer electrolyte membranes (PEM) with good properties are essential for the improvement of electrochemical operations. The increase in properties of polymer electrolyte membranes will develop the performance of polymer electrolyte membranes in the fuel cells. The importance of polymer electrolyte membranes is increasing recently due to its activity and simplicity in energy associated applications like automobiles and various portable applications. PEM has various properties like proton conductivity, chemical stability, mechanical properties, thermal stability and so on. These properties are enhanced and influenced by various factors like morphology, the molecular weight of the membranes, chemical structures, cross linkages etc. The present chapter attempts to summarize about the properties of polymer electrolyte membrane involved in the different types of electrochemical utilizations. Keywords: Polymer electrolyte membrane, fuel cells, morphology, proton conductivity, chemical structure.

scholarly journals Composite Polymers Development and Application for Polymer Electrolyte Membrane Technologies—A Review

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1712 ◽  
Author(s):  
Gabriele G. Gagliardi ◽  
Ahmed Ibrahim ◽  
Domenico Borello ◽  
Ahmad El-Kharouf
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Direct Methanol Fuel Cells ◽  
Polymer Electrolyte Membrane ◽  
Composite Membranes ◽  
Pem Fuel Cells ◽  
Chemical Degradation ◽  
Electrolyte Membrane ◽  
Nafion Membranes

Nafion membranes are still the dominating material used in the polymer electrolyte membrane (PEM) technologies. They are widely used in several applications thanks to their excellent properties: high proton conductivity and high chemical stability in both oxidation and reduction environment. However, they have several technical challenges: reactants permeability, which results in reduced performance, dependence on water content to perform preventing the operation at higher temperatures or low humidity levels, and chemical degradation. This paper reviews novel composite membranes that have been developed for PEM applications, including direct methanol fuel cells (DMFCs), hydrogen PEM fuel cells (PEMFCs), and water electrolysers (PEMWEs), aiming at overcoming the drawbacks of the commercial Nafion membranes. It provides a broad overview of the Nafion-based membranes, with organic and inorganic fillers, and non-fluorinated membranes available in the literature for which various main properties (proton conductivity, crossover, maximum power density, and thermal stability) are reported. The studies on composite membranes demonstrate that they are suitable for PEM applications and can potentially compete with Nafion membranes in terms of performance and lifetime.

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