Synthesis and characterization of PEFC membranes based on fluorinated-polymer-alloy using pre-soft-EB grafting method

Muto, Fumihiro; Oshima, Akira; Kakigi, Tomoyuki; Mitani, Naohiro; Matsuura, Akio; Fujii, Kazuki; Sato, Yukiko; Li, Jingye; Washio, Masakazu

doi:10.1016/j.nimb.2007.08.071

Cited by 9 publications

(4 citation statements)

References 24 publications

(43 reference statements)

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“…The “lake” and “river” are the sulfonated grafted hydrophilic domains, which are distributed in the forest and are responsible for the transport of protons and water, while the “forest” consists of the ungrafted regions. Another solution to the problem with PTFE is the utilization of cPTFE , or PTFE/PFA polymer alloys, both of which can greatly improve the radiation resistance of PTFE.…”

Section: Partially Fluorinated Acid Ionomer Membranesmentioning

confidence: 99%

Recent Development of Polymer Electrolyte Membranes for Fuel Cells

2012

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Membranes with Proton-Conducting Polymer Components 2793 4. Nonfluorinated Acid Ionomer Membranes 2793 4.1. Poly(arylene ether)-Based Membranes 2793 4.1.1. Modification of SPEEK Membrane 2793 4.1.2. Poly(arylene ether)s with Cross-Linkable Groups 2794 4.1.3. Poly(arylene ether)s with Pendant Sulfonated Groups or Side-Chains 2799 4.1.4. Poly(arylene ether)s with Backbones Containing Heteroatoms Such as F, N, S, and P 2800 4.1.5. Multiblock Copoly(arylene ether)s Synthesized by the Coupling Reaction of Hydrophilic and Hydrophobic Macromonomers 2803 4.2. Polyimide-Based Membranes 2804 4.2.1. SPIs Based on NTDA 2804 4.2.2. SPIs based on BNTDA 2806 4.2.3. SPIs Based on Other Dianhydrides 2807 4.3. Hydrocarbon Polymer with Aliphatic Main-Chain-Based Membranes 2807 4.4. Glass Membranes 2809 5. Polybenzimidazole/H 3 PO 4 Membranes 2809 5.1. Modifications to mPBI 2810 5.1.1. Optimizations of Preparation and Operation of Acid-Doped mPBI System 2810 5.1.2. Modified mPBI/H 3

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Section: Partially Fluorinated Acid Ionomer Membranesmentioning

confidence: 99%

Recent Development of Polymer Electrolyte Membranes for Fuel Cells

2012

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“…These membranes are prone to dehydration at temperatures above 80 • C, which, consequently, reduces their proton conductivity. In order to overcome the challenges faced by PFSA membranes, researchers have adopted partially fluorinated membranes [22]. The structure of the partially fluorinated membranes consists of a fluorocarbon base with a hydrocarbon side chain grafted on the backbone.…”

Section: Proton Exchange Membrane Fuel Cells (Pemfcs)mentioning

confidence: 99%

A Critical Review on the Use of Ionic Liquids in Proton Exchange Membrane Fuel Cells

et al. 2022

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This work provides a comprehensive review on the incorporation of ionic liquid (ILs) into polymer blends and their utilization as proton exchanges membranes (PEM). Various conventional polymers that incorporate ILs are discussed, such as Nafion, poly (vinylidene fluoride), polybenzimidazole, sulfonated poly (ether ether ketone), and sulfonated polyimide. The methods of synthesis of IL/polymer composite membranes are summarized and the role of ionic liquids as electrolytes and structure directing agents in PEM fuel cells (PEMFCs) is presented. In addition, the obstacles that are reported to impede the development of commercial polymerized IL membranes are highlighted in this work. The paper concludes that the presence of certain ILs can increase the conductivity of the PEM, and consequently, enhance the performance of PEMFCs. Nevertheless, the leakage of ILs from composite membranes as well as the limited long-term thermal and mechanical stability are considered as the main challenges that limit the employment of IL/polymer composite membranes in PEMFCs, especially for high-temperature applications.

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“…To overcome the drawbacks of perfluorinated membranes, alternatives such as the use of partially fluorinated membranes are being studied by many authors [9][10][11][12][13][14][15][16][17]. This technique allows the design of new better performing materials, improving their mechanical and thermal properties relative to the individual polymers.…”

Section: Conventional Proton Exchange Membranesmentioning

confidence: 99%

“…To reduce the cost of the perfluorinated membranes, partially fluorinated membranes are being studied by many researchers. PFA/PTFE membranes were developed by Muto et al [9]. A high conductivity of 1.7 x 10 -1 S cm -1 at 60 ºC was obtained, and power densities of approximately 630 mW cm -2 at 60 ºC with humidified gases were reached.…”

Section: Electrolytes For Fuel Cell Applications: An Overviewmentioning

confidence: 99%

Progress in the use of ionic liquids as electrolyte membranes in fuel cells

Díaz

Ortiz

Ortíz

2014

Journal of Membrane Science

252

131

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This work provides a critical review of the progress in the use of Room Temperature Ionic Liquids (RTILs) as Proton Exchange Membrane (PEM) electrolytes in Fuel Cells (FCs). It is well-known that for an efficient early commercialisation of this technology it is necessary to develop a proton exchange membrane with high proton conductivity without water dependency capable of working at temperatures above 100 ºC. The use of ionic liquids as electrolytes in electrochemical devices is an emerging field due to their high conductivity, as well as their thermal, chemical and electrochemical stability under anhydrous conditions. This paper attempts to give a general overview of the state-of-the-art, identifies the key factors for future research and summarises the recent progress in the use of ionic liquids as an innovative type of PEMs.

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Synthesis and characterization of PEFC membranes based on fluorinated-polymer-alloy using pre-soft-EB grafting method

Cited by 9 publications

References 24 publications

Recent Development of Polymer Electrolyte Membranes for Fuel Cells

Recent Development of Polymer Electrolyte Membranes for Fuel Cells

A Critical Review on the Use of Ionic Liquids in Proton Exchange Membrane Fuel Cells

Progress in the use of ionic liquids as electrolyte membranes in fuel cells

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