Membranes, hydrocarbon perfluorosulfonic acid

Sethuraman VA, Weidner JW, Haug AT, Protsailo LV (2008) Durability of perfluorosulfonic acid and hydrocarbon membranes effect of humidity and temperature. J Electrochem Soc 155 B119-B124... 

It appears that the performance of composite perfluorosulfonic acid (PFSA) membrane-based MEAs is generally better than the corresponding hydrocarbon counterpart. This is due to the effect of higher conductivity and better interface with the electrodes. 

Sethuraman V A, Weidner J W, Haug A T and Protsailo L V (2008), Durability of Perfluorosulfonic Acid and Hydrocarbon Membranes Effect of Humidity and TempeTatmC, Journal of the Electrochemical Society, 155,2, B119-B124. 

Sethuraman, V. A., Weidner, J. W., Haug, A. T., and Protsailo, L. V. 2008. Dmability of perfluorosulfonic acid and hydrocarbon membranes Effect of humidity and temperatme. Journal of the Electrochemical Society 155 B119-B124. 

Facilitated Transport of Unsaturated Hydrocarbons in Perfluorosulfonic Acid (Nafion) Membranes... 

Due to their extensive use in the polymer industry and as solvents, there is a continuing need for better separation processes for alkenes and other unsaturated organic compoimds from alkanes. Perfluorosulfonic acid (PFSA) membranes, such as Nafion (1), that have been ion-exchanged with silver(I) ion exhibit large transport selectivities for many unsaturated hydrocarbons with respect to saturates with similar physical properties. These selectivities are the result of reversible complexation reactions between the unsaturated molecules and Ag+ (2-4), which results in facilitated transport through the membranes (5). 

Abstract During the last two decades, extensive efforts have been made to develop alternative hydrocarbon-based polymer electrolyte membranes to overcome the drawbacks of the current widely used perfluorosulfonic acid Nafion. This chapter presents an overview of the synthesis, chemical properties, and polymer electrolyte fuel cell applications of new proton-conducting polymer electrolyte membranes based on sulfonated poly(arylene ether ether ketone) polymers and copolymers. 

Abstract In this chapter, we discuss the proton conductivity and use of heteropoly acids (HP As) in proton exchange fuel cells. We first review the fundamental aspects of proton conduction in the HPAs and then review liquid HPA-based fuel cells. Four types of composite proton exchange membranes containing HPAs have been identified HPAs imbibed perfluorosulfonic acid membranes, HPAs imbibed hydrocarbon membranes, sol-gel-based membranes, and polymer hybrid polyoxometa-late (polypom)-based membranes. 

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