A magnetic resonance and electrochemical study of the role of polymer mobility in supporting hydrogen transport in perfluorosulfonic acid membranes

2018 ◽  
Vol 20 (28) ◽  
pp. 19098-19109 ◽  
Author(s):  
Z. Blossom Yan ◽  
Alan P. Young ◽  
Gillian R. Goward
Keyword(s):  
Magnetic Resonance ◽  
Polymer Electrolyte Membrane ◽  
Hydrogen Transport ◽  
High Proton Conductivity ◽  
Perfluorosulfonic Acid ◽  
Electrolyte Membrane ◽  
High Proton ◽  
Perfluorosulfonic Acid Membranes ◽  
Mechanical Durability

Perfluorosulfonic acid (PFSA) materials have been used in polymer electrolyte membrane fuel cells (PEMFCs) as electrolyte materials due to their mechanical durability and high proton conductivity.

Review on Biopolymer Membranes for Fuel Cell Applications

2013 ◽  
Vol 291-294 ◽  
pp. 614-617 ◽  
Author(s):  
Nur Fatin Ab. Rahman ◽  
Loh Kee Shyuan ◽  
Abu Bakar Mohamad ◽  
Abdul Amir Hassan Kadhum
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte Membrane ◽  
Advanced Materials ◽  
Natural Polymer ◽  
High Proton Conductivity ◽  
Thermal Stabilities ◽  
Electrolyte Membrane ◽  
High Proton ◽  
Electrolyte Membranes ◽  
Chitin And Chitosan

Tremendous efforts are being made to produce polymer electrolyte membrane (PEM) for fuel cell using advanced materials in order to replace Nafion due to the high costs and its complicated synthesis procedures. One of the efforts include an extensive research on natural polymer to produce biopolymer based electrolyte membranes with desirable properties such as high proton conductivity, as well as good chemical and thermal stabilities. The examples of biopolymer that have been used are polysaccharide (e.g. cellulose, starch and glycogen), chitin and chitosan. This paper presents an overview of the types of biopolymer used to produce a PEM, comprised also their chemical and physical properties, and its performances in fuel cell applications.

Polymer Electrolyte Membrane Technology for Fuel Cells

MRS Bulletin ◽  
2005 ◽  
Vol 30 (8) ◽  
pp. 587-590 ◽  
Author(s):  
Raj G. Rajendran
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cell ◽  
Perfluorosulfonic Acid ◽  
Cell Systems ◽  
Cell Technology ◽  
Electrolyte Membrane ◽  
Perfluorosulfonic Acid Membranes

AbstractThe concept of using an ion-exchange membrane as an electrolyte separator for polymer electrolyte membrane (PEM) fuel cells was first reported by General Electric in 1955. However, a real breakthrough in PEM fuel cell technology occurred in the mid-1960s after DuPont introduced Nafion®, a perfluorosulfonic acid membrane. Due to their inherent chemical, thermal, and oxidative stability, perfluorosulfonic acid membranes displaced unstable polystyrene sulfonic acid membranes.Today, Nafion® and other related perfluorosulfonic acid membranes are considered to be the state of the art for PEM fuel cell technology. Although perfluorosulfonic acid membrane structures are preferred today, structural improvements are still needed to accommodate the increasing demands of fuel cell systems for specific applications. Higher performance, lower cost, greater durability, better water management, the ability to perform at higher temperatures, and flexibility in operating with a wide range of fuels are some of the challenges that need to be overcome before widespread commercial adoption of the technology can be realized. The present article will highlight the membrane properties relevant to PEM fuel cell systems, the development history of perfluorosulfonic acid membranes, and the current status of R&D activities in PEM technology.

Role of Defects on Mechanical Response of Nafion® Membranes for Fuel Cell Applications

2004 ◽  
Author(s):  
Ahsan Mian ◽  
Golam Newaz ◽  
Lakshmi Vendra ◽  
Xin Wu ◽  
Sheng Liu
Keyword(s):  
Fuel Cell ◽  
Mechanical Response ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cell ◽  
Tensile Behavior ◽  
Membrane Material ◽  
Initial Attempt ◽  
Electrolyte Membrane ◽  
Wave Imaging

Nafion® manufactured by Dupont is a widely used membrane material for polymer electrolyte membrane (PEM) fuel cell. Such membranes are made thin and also have to be hydrated during operation to increase proton conductivity of the cell. Since the membranes are made thin, and do not posses high mechanical properties, they are prone to any handling induced damage. In this paper, we have made an initial attempt to demonstrate the capability of thermal wave imaging nondestructive evaluation (NDE) technique in detecting various types of damage entities such as scratches, folding, and pin pricks in the membrane material. In addition, the effect of hydration and handling induced damage on the tensile behavior of Nafion® membrane is studied. It is observed that the damaged and as-received hydrated samples exhibit lower modulus and yield strength than the corresponding dry counterparts.

Droplet and slug formation in polymer electrolyte membrane fuel cell flow channels: The role of interfacial forces

2011 ◽  
Vol 196 (23) ◽  
pp. 10057-10068 ◽  
Author(s):  
Carlos E. Colosqui ◽  
May J. Cheah ◽  
Ioannis G. Kevrekidis ◽  
Jay B. Benziger
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Interfacial Forces ◽  
Electrolyte Membrane ◽  
Flow Channels

scholarly journals High proton conductivity in cyanide-bridged metal–organic frameworks: understanding the role of water

2015 ◽  
Vol 3 (44) ◽  
pp. 22347-22352 ◽  
Author(s):  
Yuan Gao ◽  
Richard Broersen ◽  
Wouter Hageman ◽  
Ning Yan ◽  
Marjo C. Mittelmeijer-Hazeleger ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Metal Organic Frameworks ◽  
Water Molecules ◽  
High Proton Conductivity ◽  
Lattice Water ◽  
High Proton ◽  
Metal Organic

Hop hop hop: the proton conductivity of the [Nd(mpca)2Nd(H2O)6Mo(CN)8]·nH2O is enabled by lattice water molecules in its channels.

scholarly journals Role of ionic interactions in the deformation and fracture behavior of perfluorosulfonic-acid membranes

Soft Matter ◽  
2020 ◽  
Vol 16 (6) ◽  
pp. 1653-1667 ◽  
Author(s):  
Shouwen Shi ◽  
Zheng Liu ◽  
Qiang Lin ◽  
Xu Chen ◽  
Ahmet Kusoglu
Keyword(s):  
Fracture Toughness ◽  
Strain Hardening ◽  
Fracture Behavior ◽  
Deformation Mechanisms ◽  
Ionic Interactions ◽  
Perfluorosulfonic Acid ◽  
Deformation And Fracture ◽  
Perfluorosulfonic Acid Membranes

Modulus, strain-hardening and fracture toughness of cation-exchanged PFSAs are interrelated via deformation mechanisms influenced by the ionic interactions governing relationships between strength vs. toughness, and stretchability vs. stiffness.

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