perfluoro sulfonic acid

1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecane-1-sulfonic acid. J Phys Chem B 107:9813–9819, Aieta NV, Stanis RJ, Horan JL, Yandrasits MA, Cookson DJ, Ingham B, Toney MF, Hamrock SJ, Herring AM (2009) Clipped random wave morphologies and the analysis of the SAXS of an ionomer formed by copolymerization of tetrafluoroethylene and CF2 = CFO(CF2)4SO3H. Wicks [18,19] are usually incorporated into the structure of the gas diffusion layer or flow field plate. The generally accepted mechanism of PFSA-based membrane chemical degradation is crossover of the gases through the membrane, which can result in the generation of hydrogen peroxide when the gases reach the other catalyst surface. It has a role as an antilipemic drug and a persistent organic pollutant. Solid oxide separators are historically very poor at load cycling due to differences in thermal expansion coefficients of the stack materials. Polymer 50:4505–4511, Liu B, Robertson GP, Kim D-S, Guiver MD, Hu W, Jiang Z (2007) Aromatic poly(ether ketone)s with pendant sulfonic acid phenyl groups prepared by a mild sulfonation method for proton exchange membranes. J Fluorine Chem 125:1695–1701, Goto K, Rozhanskii I, Yamakawa Y, Otsuki T, Naito Y (2008) Development of aromatic polymer electrolyte membrane with high conductivity and durability for fuel cell. 12.6, Baker et al. Solid State Ionics 106:219–225, Yanagimachi S, Kaneko K, Takeoka Y, Rikukawa M (2003) Synthesis and evaluation of phosphonated poly(4-phenoxybenzoyl-1, 4-phenylene). Perfluoro(2-ethoxyethane)sulfonic acid: Catalog No. J Electrochem Soc 143:3847–3852, Dyck A, Fritsch D, Nunes SP (2002) Proton-conductive membranes of sulfonated polyphenylsulfone. J Polym Sci Pol Chem 48:214–222, Lee M, Park JK, Lee H-S, Lane O, Moore RB, McGrath JE, Baird DG (2009) Effects of block length and solution-casting conditions on the final morphology and properties of disulfonated poly(arylene ether sulfone) multiblock copolymer films for proton exchange membranes. Baker et al. Fax: (00) 800 4577 4577 J Polym Sci Pol Chem 46:3860–3868, Tian S, Meng Y, Hay AS (2009) Membranes from poly(aryl ether)-based ionomers containing multiblock segments of randomly distributed nanoclusters of 18 sulfonic acid groups. Polymer 49:715–723, Lee HS, Roy A, Lane O, Lee M, McGrath JE (2010) Synthesis and characterization of multiblock copolymers based on hydrophilic disulfonated poly(arylene ether sulfone) and hydrophobic partially fluorinated poly(arylene ether ketone) for fuel cell applications. The most common anode catalyst in an acidic membrane DMFC remains ruthenium/platinum even though this was discovered 50 years ago. perfluoro-alkane-sulfonic acid in which all thirteen hydrogen atoms attached to carbons have been replaced by fluorine.2 PFHxS was introduced as an alternative to PFOS. Adv Polym Sci, Fuel Cells I 215:127–155, Appleby AJ, Velev OA, LeHelloco JG, Parthasarthy A, Srinivasan S, DesMarteau DD, Gillette MS, Ghosh JK (1993) Polymeric perfluoro bis-sulfonimides as possible fuel cell electrolytes. J Membr Sci 254:139–146, Karthikeyan CS, Nunes SP, Schulte K (2005) Ionomer-silicates composite membranes: permeability and conductivity studies. In: Meyers R.A. (eds) Encyclopedia of Sustainability Science and … [18]. A detailed summary of research on PEM fuel cell freeze and rapid startup can be found in Ref. a Nafion® membrane) is a function of temperature and water content. J Power Sources 195:104–110, Rager T, Schuster M, Steininger H, Kreuer K-D (2007) Poly(1, 3-phenylene-5-phosphonic acid), a fully aromatic polyelectrolyte with high ion exchange capacity. Synth Met 135:69–70, Ghassemi H, McGrath JE (2004) Synthesis and properties of new sulfonated poly(p-phenylene) derivatives for proton exchange membranes. Ceria inclusion improved the membrane by reducing in-plane electronic conductivity and ionic conductivity. Electrochem Commun 8:133–136, Miyatake K, Tombe T, Chikashige Y, Uchida H, Watanabe M (2007) Enhanced proton conduction in polymer electrolyte membranes with acid- functionalized polysilsesquioxane. In particular, this report presents the global market share (sales and revenue) of key companies in Perfluorosulfonic Acid business, shared in Chapter 3. The resulting sulfonic acids were tested as homogeneous and reusable Brönsted acid for the esterification of octanoic acid by n-propanol. J Membr Sci 203:215–225, Silva VS, Ruffmann B, Silva H, Gallego YA, Mendes A, Madeira LM, Nunes SP (2005) Proton electrolyte membrane properties and direct methanol fuel cell performance. (2014) reported that enhanced chemical durability was obtained with the 2% CeO2/MWCNT composite Nafion membrane. ECS Trans 16:1229–1240, Ghassemzadeh L, Kreuer KD, Maier J, Muller K (2010) Chemical degradation of nation membranes under mimic fuel cell conditions as investigated by solid-state NMR spectroscopy. Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoic Acid (PFOA) (PDF) (8 pp, 171 K, November 2017, EPA 505-F-17-001) Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoic Acid (PFOA) Contact Us to ask a question, provide feedback, or report a … Initiation generally occurs at cell edges or catalyst defects, such as large particles or mud cracking. Baker et al. Chem Commun 42:6403–6405, Hirakimoto T, Fukushima K, Li Y, Takizawa S, Hinokuma K, Senoo T (2008) Fullerene-based proton-conductive material for the electrolyte membrane and electrode of a direct methanol fuel cell. J Power Sources 155:111–117, Su Y-H, Liu Y-L, Sun Y-M, Lai J-Y, Wang D-M, Gao Y, Liu B, Guiver MD (2007) Proton exchange membranes modified with sulfonated silica nanoparticles for direct methanol fuel cells. By continuing you agree to the use of cookies. These wicks adsorb water and draw it to the membrane. North America Perfluorosulfonic Acid Growth 2020-2025, United States Perfluorosulfonic Acid Growth 2020-2025, Asia-Pacific Perfluorosulfonic Acid Growth 2020-2025, Europe Perfluorosulfonic Acid Growth 2020-2025, EMEA Perfluorosulfonic Acid Growth 2020-2025, Global Perfluorosulfonic Acid Growth 2020-2025, China Perfluorosulfonic Acid Growth 2020-2025. or +49 (0)721 84007 280 J Polym Sci Pol Chem 44:2278–2298, Karthikeyan CS, Nunes SP, Prado LASA, Ponce ML, Silva H, Ruffmann B, Schulte K (2005) Polymer nanocomposite membranes for DMFC application. Propagation is accelerated with wet/dry or hot/cold cycling, each of which can create internal stresses in the membrane.

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