Polymer electrolyte resonance

S. Tsushima, S. Hirai, K. Kitamura, M. Yamashita, S. Takasel, MRI application for clarifying fuel cell performance with variation of polymer electrolyte membranes Comparison of water content of a hydrocarbon membrane and a perfluorinated membrane. Appl. Magn. Reson. 32, 233-241 (2007)... [Pg.199]

Magnetic Resonance Imaging and Tunable Diode Laser Absorption Spectroscopy for In-Situ Water Diagnostics in Polymer Electrolyte Membrane Fuel Cells... [Pg.201]

This review deals with several types of polymer hosts that have been investigated. These include polyethylene oxide and its several modified forms, comb like polymers such as polyacrylates and inorganic polymers such as polyphosphazenes and polysiloxanes. Various instrumental techniques have been employed in the structural characterization of polymer electrolytes. The structural information obtained from methods such as Extended X-ray Absorption Fine Structure (EXAFS), X-ray diffraction methods, vibrational spectroscopy and nuclear magnetic resonance (NMR) have also been discussed. [Pg.139]

R83 S. Abbrent and S. Greenbaum, Using Nuclear Magnetic Resonance Spectroscopy in Polymer Electrolyte Research , in Polymer Electrolytes Fundamentals and Applications, eds. C. Sequeira and D. Santos, Woodhead Publishing Ltd., Cambridge, UK, 2010, p. 278. [Pg.26]

NMR spectroscopy has also been used extensively to study various electrolytes. Challenges and strategies for successful electrolytes have been previously described in literature [1, 17, 79, 80]. In a few instances, these materials consist of solid polymers [17], which are typically of high molecular weight or cross-linked, gel electrolytes, or composite materials containing additives [81-85]. In recent years, nanoscopic additives have gained recent attention [86-88]. A significant contribution of NMR spectroscopy to the polymer electrolyte community arose from line-width measurements of various resonances as a function of temperature [89-92]. The results showed a correlation between ionic conduction... [Pg.265]

Chung S, Wang Y, Greenbaum S, Golodnitsky D, Peled E (1999) Uniaxial stress effects in poly(ethylene oxide)-LiI polymer electrolyte film - a Li-7 nuclear magnetic resonance study. Electrochem Solid State Lett 2(11) 553-555... [Pg.280]

S. Suarez, S. Greenbaum, Nuclear magnetic resonance of polymer electrolyte membrane fuel cells, Chem. Rec. 10 (2010) 377—393. [Pg.201]

S. Tsushima, K. Teranishi, S. Hirai, Magnetic resonance imaging of the water distribution within a polymer electrolyte membrane in fuel cells, Electrochem. Solid-State Lett. 7 (2004) A269-A272. [Pg.209]

S. Tsushima, S. Takita, S. Hirai, N. Kubo, K. Aotani, Magnetic resonance imaging of a polymer electrolyte membrane under water permeation, Exp. Heat Transfer 22 (2009) 1-11. [Pg.210]

M. Wang, K.W. Feindel, S.H. Bergens, R.E. Wasybshen, In situ quantibcation of the in-plane water content in the NAFION membrane of an operating polymer-electrolyte membrane fuel cell using H micro-magnetic resonance imaging experiments, J. Power Sources 195 (2010) 7316—7322. [Pg.210]

K.W. Feindel, Magnetic resonance imaging (MRI) techniques for polymer electrolyte membrane and direct alcohol fuel ceU characterization, in C. Hattnig, C. Roth (Eds.), Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology, In Sim Characterization Techniques for Low Temperature Fuel Cells, vol. 2, Woodhead Publishing Limited, Cambridge, UK, 2012. [Pg.210]

Kim YS (2011) Resonance-stabihzed anion exchange polymer electrolytes. US DOE hydrogen and fuel cells program and vehicle technologies program... [Pg.32]

Kim YS (2010) Resonance-stabilized anion exchange polymer electrolytes. In Annual merit review and... [Pg.43]

Magnetic Resonance Imaging (MRI) becomes one of the useful microscopy and is used not only for the medical purposes but also for chemical applications. For polyurethane foams, the analysis of the distributions of many microstructural features, including strut length and window and cell shape distributions, were carried out. The diffusion behaviours of water in membrane is investigated by MRI in order to develop the polymer electrolyte fuel cells.The solvent diffusions and the swollen behaviors were investigated by MRI for hydroxy methyl cellulose,high amylose starch tablets, poly(ethylene methacrylate)/poly(2-hydroxyethyl methacrylate)-co-tetrahydro-... [Pg.424]

Jing, F., Hou, M., Shi, W, Fu, J., Yu, H., Ming, P. and Yi, B. (2007) The effect of ambient contamination on PEMFC performance. J. Power Sources 166, 172-176 Kadirov, M. K., Bosnjakovic, A. and Schlick, S. (2005) Membrane-derived fluorinated radiceds detected by electron spin resonance in UV-irradiated Nafion and Dow ionomers Effect of counterions and H O - J- Phys. Chem. B 109, 7664-7670 Kelly, M. J., Egger, B., Fafilek, G., Besenhard, J. O., Kronberger, H. and Nauer, G. E. (2005a) Conductivity of polymer electrolyte membranes by impedance spectroscopy with microelectrodes. Solid State Ionics 176, 2111-2114... [Pg.304]

Ito, K. and Ogawa, K., Investigation of Water Molecule Distribution and Transport Mechanism in Polymer Electrolyte Membrane by Magnetic Resonance Imaging, Proceeding of the 4th JSME-KSME Thermal Engineering Conference, Kobe, Japan, 3, pp. 355-360, 2000. [Pg.135]

Tushima, S., Teranishi, K. and Hirai, S., Magnetic Resonance Imaging of the Water Distribution within a Polymer Electrolyte Membrane in Fuel Cell, Electrochemical and Solid-State Lett., 7, No. 9, A269-A272, 2004. [Pg.136]

ROSARIO, A.v. and pereira, e.c., 2000. Nuclear magnetic resonance study of PEO-based composite polymer electrolytes, 7th International Symposium on Polymer Electrolytes (ISPE-7), Pergamon-Elsevier Science Ltd, ppl571-1579. [Pg.85]

The present review shows the principal results of ionic condnctivity characterization of polymer electrolytes based on natnral polymers with emphasis on sohd state nnclear magnetic resonance (NMR) measurements. [Pg.95]

Among the polymer electrolytes obtained from natural polymers, Klink-lai et reported ionic conductivity and NMR spectroscopy of polymer electrolytes formed by the mixture of liquid epoxidized natural rubber with Uthium salts. The authors discussed the correlation between the spin-lattice relaxation times with the solubility of the different lithium salts in the deprotonized liquid rubber. Based on the NMR chemical shift and the resonance half-width and the spin-lattice relaxation times results they concluded that lithium bis(trifiuoro methane sulfonyl)imide is a suitable salt for forming polymer electrolytes with deprotonized liquid natural rubber. [Pg.114]

Using nuclear magnetic resonance spectroscopy in polymer electrolyte research... [Pg.278]

TAMBELLi, C.E., DONOSO, J.P., REGIANI, A.M., et flZ., Nnclear magnetic resonance and conductivity study of HEC/polyether-based polymer electrolytes, Electro-chim. Acta, 2001, 46,1665-72. [Pg.520]

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