Stable and effective proton exchange membrane formation via cross-linking the polymeric proton donor and proton acceptor in a layer-by-layer structure

2018 ◽  
Vol 43 (13) ◽  
pp. 6701-6710 ◽  
Author(s):  
Chalanda Meemuk ◽  
Suwabun Chirachanchai
Keyword(s):  
Proton Exchange Membrane ◽  
Layer Structure ◽  
Proton Donor ◽  
Proton Exchange ◽  
Proton Acceptor ◽  
Cross Linking ◽  
Layer By Layer ◽  
Membrane Formation ◽  
Exchange Membrane

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.

Noncovalent Functionalization of Single Walled Carbon Nanotubes Using Alternate Layer-By-Layer Polyelectrolyte Adsorption for Nanocomposite Fuel Cell Electrodes

2004 ◽  
Vol 837 ◽  
Author(s):  
R. B. Dhullipudi ◽  
T. A. Dobbins ◽  
S.R. Adiddela ◽  
Z. Zheng ◽  
R. A. Gunasekaran ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Single Walled Carbon Nanotubes ◽  
Pem Fuel Cells ◽  
Proton Exchange ◽  
Layer By Layer ◽  
Single Walled Carbon ◽  
Exchange Membrane ◽  
Walled Carbon Nanotubes

ABSTRACTElectrodes which are resistant to chemical poisoning by CO, S, and other fuel impurities are needed to replace Pt in proton exchange membrane (PEM) fuel cells. We have designed composite electrodes comprised of single walled carbon nanotubes (CNTs) within a conducting polymer matrix. A method for solubilizing single-walled carbon nanotubes (CNTs) in aqueous media using polyelectrolyte layer-by-layer (LbL) nanoassembly of polystyrene sulfonate (PSS) and polyallylamine (PAH) at the CNT surface is elucidated. Once soluble, the CNTs were assembled onto planar substrates using alternate LbL nanoassembly to form nanocomposite films. These films will later be tested for their potential as alternative anodes in proton exchange membrane fuel cells.

Layer by layer assembly of hybrid nanoparticle coatings for proton exchange membrane fuel cell bipolar plates

2010 ◽  
Vol 195 (20) ◽  
pp. 7054-7060 ◽  
Author(s):  
Feng Wang ◽  
Mubarak Alazemi ◽  
Indrajit Dutta ◽  
Richard H. Blunk ◽  
Anastasios P. Angelopoulos
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Layer By Layer ◽  
Bipolar Plates ◽  
Layer By Layer Assembly ◽  
Hybrid Nanoparticle ◽  
Nanoparticle Coatings ◽  
Exchange Membrane ◽  
Layer Assembly
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