scholarly journals Pore-Filled Proton-Exchange Membranes with Fluorinated Moiety for Fuel Cell Application

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4433
Author(s):  
Hyeon-Bee Song ◽  
Jong-Hyeok Park ◽  
Jin-Soo Park ◽  
Moon-Sung Kang
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Continuous Process ◽  
Oxidation Stability ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Cross Linking ◽  
Polymer Backbone ◽  
Transfer Resistance ◽  
Exchange Membrane

Proton-exchange membrane fuel cells (PEMFCs) are the heart of promising hydrogen-fueled electric vehicles, and should lower their price and further improve durability. Therefore, it is necessary to enhance the performances of the proton-exchange membrane (PEM), which is a key component of a PEMFC. In this study, novel pore-filled proton-exchange membranes (PFPEMs) were developed, in which a partially fluorinated ionomer with high cross-linking density is combined with a porous polytetrafluoroethylene (PTFE) substrate. By using a thin and tough porous PTFE substrate film, it was possible to easily fabricate a composite membrane possessing sufficient physical strength and low mass transfer resistance. Therefore, it was expected that the manufacturing method would be simple and suitable for a continuous process, thereby significantly reducing the membrane price. In addition, by using a tri-functional cross-linker, the cross-linking density was increased. The oxidation stability was greatly enhanced by introducing a fluorine moiety into the polymer backbone, and the compatibility with the perfluorinated ionomer binder was also improved. The prepared PFPEMs showed stable PEMFC performance (as maximum power density) equivalent to 72% of Nafion 212. It is noted that the conductivity of the PFPEMs corresponds to 58–63% of that of Nafion 212. Thus, it is expected that a higher fuel cell performance could be achieved when the membrane resistance is further lowered.

Investigation on the performance decay of proton exchange membrane basing on sulfonated heterocyclic poly(aryl ether ketone)s in Fenton’s reagent

2021 ◽  
Author(s):  
Qian Liu ◽  
Shouhai Zhang ◽  
Zhaoqi Wang ◽  
Jianhua Han ◽  
Ce Song ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange Membranes ◽  
Proton Conduction ◽  
Proton Exchange ◽  
Aryl Ether ◽  
Potential Applications ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Exchange Membrane

Sulfonated N-heterocyclic poly(aryl ether)s proton exchange membranes have potential applications in the fuel-cell field for their favorable proton conduction capacity and stability. This paper investigates the changes in mass and...

Understanding of Nafion Membrane Additive Behaviors in Proton Exchange Membrane Fuel Cell Conditioning

2018 ◽  
Vol 16 (1) ◽  
Author(s):  
Nana Zhao ◽  
Zhong Xie ◽  
Zhiqing Shi
Keyword(s):  
Fuel Cell ◽  
Large Scale ◽  
Proton Exchange Membrane ◽  
Electrochemical Impedance ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Production Volume ◽  
Transfer Resistance ◽  
Conditioning Process ◽  
Exchange Membrane

Durability and cost are the two major factors limiting the large-scale implementation of fuel cell technology for use in commercial, residential, or transportation applications. The conditioning cost is usually negligible for making proton exchange membrane fuel cells (PEMFCs) at R&D or demo stage with several tens of stacks each year. However, with industry's focus shifting from component development to commercial high-volume manufacturing, the conditioning process requires significant additional capital investments and operating costs, thus becomes one of the bottlenecks for PEMFC manufacturing, particularly at a high production volume (>1000 stack/year). To understand the mechanisms behind PEMFC conditioning, and to potentially reduce conditioning time or even to eliminate the conditioning process, the conditioning behaviors of commercial Nafion™ XL100 and Nafion® NRE 211 membranes were studied. The potential effects of the membrane additive on fuel cell conditioning were diagnosed using in situ electrochemical impedance spectroscopy (EIS). It was found that the membrane additive led to the significant variation of the charge transfer resistance in EIS during conditioning, which affected the conditioning behavior of the membrane electrode assembly (MEA).

Nanocomposite SPEEK/Titania Nanosheets (TNS) Proton Exchange Membranes for Fuel Cell Applications

2009 ◽  
Vol 421-422 ◽  
pp. 447-450 ◽  
Author(s):  
Debora Marani ◽  
S. Licoccia ◽  
Enrico Traversa ◽  
Masaru Miyayama
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Water Uptake ◽  
Proton Exchange Membrane ◽  
Composite Membranes ◽  
Proton Exchange Membranes ◽  
Structural Features ◽  
Proton Exchange ◽  
Unique Nature ◽  
Exchange Membrane

SPEEK-based composite membranes containing various amounts of titania nanosheets (TNS) as inorganic fillers were investigated for proton exchange membrane fuel cell applications. The samples were characterized for water uptake, proton conductivity (EIS), and structural features (SEM and XRD). Composites at low inorganic additive contents exhibited improved properties in terms of proton conductivity and water uptake behavior. Best improvements were observed for the composite containing only 0.95 wt% of TNS. This result could be associated to the unique nature of the two dimensional nanostructure of the inorganic additive.

Dual sulfonated poly(arylene ether ketone) membrane grafted with 15-crown-5-ether for enhanced proton conductivity and anti-oxidation stability

2019 ◽  
Vol 4 (4) ◽  
pp. 901-911 ◽  
Author(s):  
Dinh Cong Tinh Vo ◽  
Minh Dat Thinh Nguyen ◽  
Dukjoon Kim
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Oxidation Stability ◽  
Critical Issue ◽  
Proton Exchange ◽  
Arylene Ether ◽  
Ether Ketone ◽  
Exchange Membrane ◽  
Sulfonated Poly

In the proton exchange membrane fuel cell, durability has recently been the critical issue in its operation.

Towards new proton exchange membrane materials with enhanced performance via RAFT polymerization

2016 ◽  
Vol 7 (3) ◽  
pp. 701-714 ◽  
Author(s):  
Gökçe Çelik ◽  
Murat Barsbay ◽  
Olgun Güven
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Chain Transfer ◽  
Raft Polymerization ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Reversible Addition ◽  
Radiation Induced ◽  
Exchange Membrane ◽  
Radiation Induced Grafting

This study focuses on the synthesis of well-defined proton exchange membranes (PEM) for fuel cell applications using reversible addition–fragmentation chain transfer (RAFT) polymerization in the radiation-induced grafting part of the overall process.

Phosphoric acid doped polybenzimidazole with leaf-like three-layer porous structure as high-temperature proton exchange membrane for fuel cell

2021 ◽  
Author(s):  
Peng Wang ◽  
Jinwu Peng ◽  
Bibo Yin ◽  
Xian-Zhu Fu ◽  
Lei Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Phosphoric Acid ◽  
Porous Structure ◽  
Proton Exchange Membrane ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
High Ability ◽  
Exchange Membrane

Porous polybenzimidazole (PBI) membranes with high ability to store phosphoric acid (PA) and transfer protons are promising materials as high-temperature proton exchange membranes (HT-PEMs) for fuel cell applications. However, porous...

scholarly journals On the Evolution of Sulfonated Polyphenylenes as Proton Exchange Membranes for Fuel Cells

2021 ◽  
Author(s):  
Michael Adamski ◽  
Nicolas Peressin ◽  
Steven Holdcroft
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Pem Fuel Cell ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Perfluorosulfonic Acid ◽  
Exchange Membrane

The recent expansion in proton exchange membrane (PEM) research has been commensurate with the growth of PEM fuel cell research. Perfluorosulfonic acid (PFSA) ionomer materials remain the technological membrane of...

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