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Proton exchange membrane fuel cells
Vacuum, 2006The desire to have compact, high power sources with low environmental impact has focused attention on proton exchange membrane fuel cells (PEMFC). The paper gives a brief overview of processes and technical challenges related to PEMFCs. The main goal is also to give a short overview of the underlying science and to show a feasible approach to ...
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Biomimetic N-Doped Graphene Membrane for Proton Exchange Membranes
Nano Letters, 2021Proton exchange membranes (PEMs) with both high selectivity and high permeance are of great demand in hydrogen-based applications, especially in fuel cells. Although graphene membranes have shown high selectivity of protons over other ions and molecules, the relatively low permeance of protons through perfect pristine graphene restricts its practical ...
Zhiyang Zeng +6 more
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ChemPhysChem, 2011
Abstract Herein, we study the preparation and characterization of a new kind of proton exchange membrane. In the proton‐conducting membrane of poly(vinylidene fluoride) (PVDF)/poly(ethylene oxide) (PEO)/dodecyl benzenesulfonic acid (DBS‐H), we use PEO as “proton solvent” due to its flexible molecular chain ...
Baoying, Sun +3 more
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Abstract Herein, we study the preparation and characterization of a new kind of proton exchange membrane. In the proton‐conducting membrane of poly(vinylidene fluoride) (PVDF)/poly(ethylene oxide) (PEO)/dodecyl benzenesulfonic acid (DBS‐H), we use PEO as “proton solvent” due to its flexible molecular chain ...
Baoying, Sun +3 more
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Inorganic Proton Exchange Membranes
ASME 2006 Fourth International Conference on Fuel Cell Science, Engineering and Technology, Parts A and B, 2006Direct Methanol Fuel Cells (DMFCs) offer advantages from quick refills to the elimination of recharge times. They show the most potential in efficient chemical to electrical energy conversion, but currently one major source of inefficiency within the DMFC system is the electrolyte allowing fuel to cross over from the anode to cathode.
Timothy Reissman +5 more
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Advances in ionogels for proton-exchange membranes
Science of The Total EnvironmentTo ensure the long-term performance of proton-exchange membrane fuel cells (PEMFCs), proton-exchange membranes (PEMs) have stringent requirements at high temperatures and humidities, as they may lose proton carriers. This issue poses a serious challenge to maintaining their proton conductivity and mechanical performance throughout their service life ...
Yilin, Zhou +11 more
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Synthesis and Characterization of Polyurethanic Proton Exchange Membranes
Journal of Fuel Cell Science and Technology, 2011Novel proton exchange membranes have been prepared by in synthesis functionalization of a polyurethane matrix with a sulfonic group containing chain terminals. The synthesis procedure was based on the use of two polyethylene glycols with nominal molecular weight of 300 and 1 k and 4,4′ dicyclohexylmethane diisocyanate in presence of the sodium salt of ...
BOTTINO, ALDO +3 more
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A comparison of alkaline and proton exchange membrane electrolyzers
Russian Journal of Physical Chemistry A, 2008Faraday efficiencies and energy consumptions of a small commercial proton exchange membrane (PEM) and an alkaline electrolyzer designed at our laboratory and equipped with different cathode materials were determined. Our experimental data indicate that the alkaline electrolyzer has a higher Faraday efficiency than the PEM electrolyzer, but, on the ...
Stojić, Dragica Lj. +3 more
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2009
Operation and Alternative Proton Conductors 166 3.4 Future Directions 170 References 171Proton exchange membranes (PEMs) are a key component in PEM fuel cells (PEMFCs) and an area of active research in commercial, government, and academic institutions. In this chapter, the review of PEM materials is divided into two sections.
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Operation and Alternative Proton Conductors 166 3.4 Future Directions 170 References 171Proton exchange membranes (PEMs) are a key component in PEM fuel cells (PEMFCs) and an area of active research in commercial, government, and academic institutions. In this chapter, the review of PEM materials is divided into two sections.
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Proton Transfer in Proton Exchange Membrane Based on RDF
Advanced Materials Research, 2011PEM fuel cell is the most promising application as an automotive power. Proton transfer in PEM is one of important factors to understand the performance of PEM fuel cell. In this paper, the proton transfer mechanisms are analyzed by the molecular simulation based on the basic principle of molecular dynamics.
Zhe Sun +4 more
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Mesoscale Simulation of Proton Transport in Proton Exchange Membranes
The Journal of Physical Chemistry C, 2012Previous efforts to model proton transport through fuel cell membranes have largely focused on disparate length scales: molecular dynamics at the atomistic level and fuel cell stack engineering app...
Ryan Jorn, Gregory A. Voth
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