High-temperature proton-conducting membranes

M. Doyle, S.K. Choi and G. Proulx, High-temperature proton conducting membranes based on perfluorinated ionomer membrane-ionic liquid composites, J. Electrochem. Soc., 2000, 147, 34-37. 

Langguth J, Dittmeyer R, Hofmann H and Tomandl G (1997), Studies on oxidative coupling of methane using high-temperature proton-conducting membranes ,... 

High-temperature proton-conducting membranes were obtained by strong acid treatment of the PBI... 

Yang J, He R, Che Q et al (2010) A copolymer of poly[2,2 -(m-phenylene)-5,5 -bibenzimidazole] and poly(2,5-henzimidazole) for high-temperature proton-conducting membranes. Polym Int 59 1695-1700... 

I. Honma, H. Nakajima, and S. Nomura. High temperature proton conducting hybrid polymer electrol3de membranes. Solid State Ionics 154, 707-712 2002. 

The overall objective is to operate PEMFCs at lOO-MO C to improve CO tolerance, mitigate water and thermal management challenges and reduce membrane cost. The basic approach is to develop a composite membrane consisting of mechanical support and high-temperature proton conduction phases. In order to improve cathode performance, modification of cathode formulation and structure is on-going. Promising solid superacids are incorporated into the cathode. 

Somisetti, V. S. (2014). Thermal stability and ionic conductivity of high-temperature proton conducting ionic liquid Polymer Composite Electrolyte Membranes for Fuel Cell Applications. Polymer Composites for Energy Harvesting, Conversion, and Storage, vol. 1161, American Chemical Society pp. 111-126. 

Okada S, Mineshige A, Kikuchi T, Kobune M, Yazawa T (2007) Cermet-type hydrogen separation membrane obtained from fine particles of high temperature proton-conductive oxide and palladium. Thin Solid Films 515 7342-7346... 

Bhadra S, Kim NH, Lee JH (2010) A new selfcross-linked, net-structured, prohm conducting polymer membrane for high temperature proton exchange membrane fuel cells. J Membr Sci 349 304-311... 

Wang S, Zhao C, Ma W et al (2013) Silane-cross-linked polybenzimidazole with improved conductivity for high temperature proton exchange membrane fuel cells. J Mater Chem A 1 621-629... 

Bae J.M., Honma I., Hirakawa S. Synthesis and properties of ceramics-polymer composite membranes as high temperature proton conducting electrol)des. J. Korean Phys. Soc. 1999 35 315-319... 

Fig. 7.16 Dependence of proton conductivity on relative humidity of a hybrid octane membrane at (a) 120°C and (b) 160°C. Reprinted with permission from Ref. [56] I. Honma, et al.. Organic/ inorganic nano-composites for high temperature proton conducting polymer electrolytes. Solid State Ionics 162-163, 237-245 (2003). Copyright Elsevier...

TanigucM, T., Morimoto, T. and Kawakado, M. (2001) High Temperature Proton Conductive Electrolyte Membrane. Patent JP2001213987A2, Toyota Central Research Development Laboratory, Inc., Japan. 

Jannasch, P. (2003) Recent developments in high-temperature proton conducting polymer electrolyte membranes. Current Opinion in Colloid Interface Science, 8, 96-102. 

Nakajima H, Nomura S, Sugimoto T, Nishikawa S, Honma I (2002) High temperature proton conductive organic-inorganic nanohybrids for polymer electrolyte membrane. Part II. J Electrochem. Soc., 149, pp. A953-A959. 

JANNASCH p (2003), Recent development in high-temperature proton conducting polymer electrolyte membranes , Curr Opin Colloid Interf Sci, 8,96-102. KARLSSON L E and JANNASCH p (2004), Polysulfone ionomers for proton-conducting fuel cell membranes sulfoalkylated polysulfones ,/ A/ewhr Sci, 230,61-70. 

The PEMFCs require expensive polymer membrane (e.g., Nation ), and operate at a low temperature (e.g., 80°C). Although low temperature reduced the cost of material, the heat generated at low temperatures is more difficult to remove. Alternate proton conducting membranes (e.g., inorganic polymer composites) that will operate at a high temperature (e.g., 200°C) are required. The expensive platinum catalyst used for electrochemical reactions can be poisoned by even trace amounts of carbon monoxide in the hydrogen fuel stream. Hence, a more tolerant catalyst material needs to be developed. 

Jeske, M., Soltmann, C., Ellenberg, C., Wilhelm, M., Koch, D. and Grathwohl, G. 2007. Proton conducting membranes for the high temperature-polymer electrolyte membrane-fuel cell (HT-PEMFC) based on functionalized polysiloxanes. 

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