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Assessment of Sensitivity to Evaluate the Impact of Operating Parameters on Stability and Performance in Proton Exchange Membrane Fuel Cells
Article

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

Department of Green Chemical Engineering, College of Engineering, Sangmyung University, Cheonan 31066, Korea
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Authors to whom correspondence should be addressed.
Academic Editor: Ivan Tolj
Energies 2021, 14(15), 4433; https://doi.org/10.3390/en14154433
Received: 30 June 2021 / Revised: 17 July 2021 / Accepted: 18 July 2021 / Published: 22 July 2021
(This article belongs to the Special Issue Advanced Studies for PEM Fuel Cells in Hydrogen-Fueled Vehicles)
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. View Full-Text
Keywords: proton-exchange membrane fuel cell; hydrogen-fueled electric vehicles; pore-filled proton-exchange membranes; partially fluorinated ionomer; porous polytetrafluoroethylene proton-exchange membrane fuel cell; hydrogen-fueled electric vehicles; pore-filled proton-exchange membranes; partially fluorinated ionomer; porous polytetrafluoroethylene
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MDPI and ACS Style

Song, H.-B.; Park, J.-H.; Park, J.-S.; Kang, M.-S. Pore-Filled Proton-Exchange Membranes with Fluorinated Moiety for Fuel Cell Application. Energies 2021, 14, 4433. https://doi.org/10.3390/en14154433

AMA Style

Song H-B, Park J-H, Park J-S, Kang M-S. Pore-Filled Proton-Exchange Membranes with Fluorinated Moiety for Fuel Cell Application. Energies. 2021; 14(15):4433. https://doi.org/10.3390/en14154433

Chicago/Turabian Style

Song, Hyeon-Bee, Jong-Hyeok Park, Jin-Soo Park, and Moon-Sung Kang. 2021. "Pore-Filled Proton-Exchange Membranes with Fluorinated Moiety for Fuel Cell Application" Energies 14, no. 15: 4433. https://doi.org/10.3390/en14154433

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