Academic literature on the topic 'Nafion coating and manufacturing'

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Journal articles on the topic "Nafion coating and manufacturing"

1

Ahn, Su Min, Hwan Yeop Jeong, Jung-Kyu Jang, et al. "Polybenzimidazole/Nafion hybrid membrane with improved chemical stability for vanadium redox flow battery application." RSC Advances 8, no. 45 (2018): 25304–12. http://dx.doi.org/10.1039/c8ra03921f.

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2

Mohamed, Hamdy F. M., Seiti Kuroda, Yoshinori Kobayashi, Bruno Tavernier, Ryoichi Suzuki, and Akihiro Ohira. "Study of Thin Nafion® Films for Fuel Cells Using Energy Variable Slow Positron Annihilation Spectroscopy." Materials Science Forum 733 (November 2012): 57–60. http://dx.doi.org/10.4028/www.scientific.net/msf.733.57.

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Nafion® is one of the most popular proton conducting membranes for polymer electrolyte fuel cells (PEFCs). For the integration of Nafion® to the catalyst layers, very thin layers of the polymer are often formed on the catalysts of PEFC from dilute solutions. We applied energy variable positron annihilation to characterizing the structure of thin Nafion® films prepared by spin and dip coating from ethanol/water solutions of Nafion® on Si substrates. Experimental data suggest that the nano-structure of 23 nm thick spin coated Nafion® film is different from 220 nm thick film and also from 26 and 227 nm thick dip coated films, possibly due to the preservation of the unique rod-like structure of Nafion® in the dilute solution.
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3

Lee, Gyu Jei, Han Kyu Lee, and Dong Il Kwon. "Microscratch Analysis and Interfacial Toughness of Catalyst Coating on Electrolyte Polymer in Micro Fuel Cells." Solid State Phenomena 124-126 (June 2007): 1633–36. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1633.

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This study combined microscratch test and fracture-mechanical analysis to assess the interfacial reliability of Nafion and Pt/Ru catalyst layers in micro fuel cells. Scratch test was used to determine the critical load for interfacial failure, while fracture-mechanical analysis was used to quantify the adhesion between Nafion (the electrolyte polymer substrate) and Pt/Ru alloy (catalyst coating). We also proposed a key of solving ambiguous problems in indentation cracking test by determining geometric information from crack propagation and critical points, as for a hard porous coating on a soft substrate. A comparative analysis of three coating methods, spray, decalcomania and their mixed process, was done to assess the validity of our new method.
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4

Palisoc, Shirley, Vince Aaron Sow, and Michelle Natividad. "Fabrication of a bismuth nanoparticle/Nafion modified screen-printed graphene electrode for in situ environmental monitoring." Analytical Methods 11, no. 12 (2019): 1591–603. http://dx.doi.org/10.1039/c9ay00221a.

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5

Toikkanen, Outi, Mikko Nisula, Elina Pohjalainen, et al. "Al2O3 coating grown on Nafion membranes by atomic layer deposition." Journal of Membrane Science 495 (December 2015): 101–9. http://dx.doi.org/10.1016/j.memsci.2015.08.021.

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6

Luo, Jing, Rung-Chuan Lee, Jian-Ting Jin, Yu-Ting Weng, Chia-Chen Fang, and Nae-Lih Wu. "A dual-functional polymer coating on a lithium anode for suppressing dendrite growth and polysulfide shuttling in Li–S batteries." Chemical Communications 53, no. 5 (2017): 963–66. http://dx.doi.org/10.1039/c6cc09248a.

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7

He, Guangwei, Xueyi He, Xinglin Wang, et al. "A highly proton-conducting, methanol-blocking Nafion composite membrane enabled by surface-coating crosslinked sulfonated graphene oxide." Chemical Communications 52, no. 10 (2016): 2173–76. http://dx.doi.org/10.1039/c5cc07406a.

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8

Cai, Feng, Jian Fei Xia, Zong Hua Wang, Yan Zhi Xia, Fei Fei Zhang, and Lin Hua Xia. "Sensitive Determination of Rutin Using a Nafion/PMB/Graphene Composite-Modified Glassy Electrode." Advanced Materials Research 641-642 (January 2013): 566–69. http://dx.doi.org/10.4028/www.scientific.net/amr.641-642.566.

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A novel Nafion/PMB/G/GCE was prepared by firstly electro-polymerization of MB to G/GCE and then coating Nafion on PMB/G/GCE. The as-prepared modified electrode combining the advantages of Nafion, methylene blue and G was employed for the sensitive detection of rutin. The results showed that the peak current of rutin obtained on Nafion/PMB/G/GCE was obviously high compared to bare electrode and G/GCE. Under the optimized value of pH, which was pH 3.0, peak current of rutin had good linear relation with the scan rate. At the same time, peak current increased linearly with increasing concentration of rutin. The linear range was from 5×10-7 mol/L to 1.2×10-5 mol/L, and the detection limit was 9.5×10-8 mol/L
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9

Yao, Yuanyuan, Yangping Wen, Jingkun Xu, Long Zhang, and Xuemin Duan. "Application of commercial poly(3,4-ethylenedioxy-thiophene):poly(styrene sulfonate) for electrochemical sensing of dopamine." Journal of the Serbian Chemical Society 78, no. 9 (2013): 1397–411. http://dx.doi.org/10.2298/jsc120927036y.

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In this paper, a simple and stable composite electrode based on intrinsically conducting polymer poly(3,4-ethylenedioxythiophene):poly(sty-renesulfonate) (PEDOT:PSS) and ion-exchange polymer Nafion, was successfully fabricated by drop-coating the blended commercially available PEDOT:PSS aqueous dispersion and Nafion solution on the surface of glassy carbon electrode (GCE). PEDOT:PSS was used as a matrix, while Nafion was employed to improve the immobilization stability of composite films and adhesion to electrode surface in comparison with PEDOT:PSS films. Cyclic voltammetry, differential pulse voltammetry, electrochemical impedance spectroscopy, and scanning electron microscopy were utilized to characterize the properties of this composite electrode. The as-proposed composite electrode displayed good water-stability. Meanwhile, the composite electrode was applied to electrochemical sensing of dopamine, and the performance of PEDOT:PSS-Nafion composite films was evaluated. These results demonstrate that PEDOT:PSS-Nafion composites are a promising candidate of electrode modified material in electrochemical sensing and other electrocatalytic applications.
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10

Dastorian Jamnani, Bahador, Soraya Hosseini, Saeed Rahmanian, Suraya Abdul Rashid, Sa'ari b. Mustapha, and Sepideh Keshan Balavandy. "Grafting Carbon Nanotubes on Glass Fiber by Dip Coating Technique to Enhance Tensile and Interfacial Shear Strength." Journal of Nanomaterials 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/149736.

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The effects of noncovalent bonding and mechanical interlocking of carbon nanotubes (CNT) coating on tensile and interfacial strength of glass fiber were investigated. CNT were coated over glass fiber by a simple dip coating method. Acid treated CNT were suspended in isopropanol solution containing Nafion as binding agent. To achieve uniform distribution of CNT over the glass fiber, an optimized dispersion process was developed by two parameters: CNT concentration and soaking time. CNT concentration was varied from 0.4 to 2 mg/mL and soaking time was varied from 1 to 180 min. The provided micrographs demonstrated appropriate coating of CNT on glass fiber by use of CNT-Nafion mixture. The effects of CNT concentration and soaking time on coating layer were studied by performing single fiber tensile test and pull-out test. The obtained results showed that the optimum CNT concentration and soaking time were 1 mg/mL and 60 min, respectively, which led to significant improvement of tensile strength and interfacial shear stress. It was found that, at other concentrations and soaking times, CNT agglomeration or acutely curly tubes appeared over the fiber surface which caused a reduction of nanotubes interaction on the glass fiber.
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