Alkaline Anion Exchange Membrane Fuel Cells

Chapter 6 deals with the description of different membranes used in direct alcohol fuel cells. Firstly, the properties of Nafion and its inorganic and organic composites are analyzed, focused on the proton cmiductivity and alcohol permeability, which determine the alcohol selectivity of the modified Nafion membranes. Then, a number of alternative non-fluorinated proton conducting membranes, including sulfonated polyimides, poly(arylene ether)s, polysulfones, poly(vinyl alcohol), polystyrenes, and acid-doped polybenzimidazoles, are described in relation to their selectivity in comparison to Nafion. The chapter includes a comprehensive summary of the relative selectivity of these membranes and their performance in direct alcohol fuel cells. Anion exchange membranes for alkaline direct alcohol fuel cells are also reviewed. [Pg.377]

Recent developments in AAEMs have opened up the possibiUty of an alkaline analog of the acidic solid polymer electrolyte fuel cell. This could utilize the benefits of the alkaline cathode kinetics and at the same time eradicate the disadvantages of using an aqueous electrolyte. As the AAEM is also a polymer electrolyte membrane (sometimes abbreviated as PEM), some clarity in abbreviations is required. In this chapter, PEM refers only to the proton exchange membrane fuel cells (acidic), AAEM refers to the anion exchange membrane H2/O2 fuel cells, and AFC exclusively refers to the aqueous electrolyte alkaline H2/O2 fuel cells. Anion exchange membranes are also employed in alkaline direct alcohol fuel cells, discussion of which will refer to them as ADMFC/ADEFC (methanol/ ethanol). [Pg.40]

T.A. Sherazi, J.Y. Sohn, YM. Lee, and M.D. Guiver, Polyethylene-based radiation grafted anion-exchange membranes for alkaline fuel cells, Journal of Membrane Science, 441, 148-157, 2013. [Pg.192]

Zeng, Q.H., Liu, Q.L., Broadwell, I., Zhu, A.M., Xiong, Y., Tu, X.P. (2010) Anion exchange membranes based on quatemized polystyrene-block-poly(ethylene-ran-butyl-ene)-block-polystyrene for direct methanol alkaline fuel cells. Journal of Membrane Science, 349, 237-243. [Pg.353]

Xu, H., Fang, J., Guo, M., Lu, X., Wei, X., Tu, S. (2010) Novel anion exchange membrane based on copolymer of methyl methacrylate, vinylbenzyl chloride and ethyl acrylate for alkaline fuel cells. Journal of Membrane Science, 354, 206-211. [Pg.357]

Varcoe JR, Slade RCT. 2005. Prospects for alkaline anion-exchange membranes in low temperature fuel cells. Fuel Cells 5 187-200. [Pg.206]

Matsuoka K, Iriyama Y, Abe T, Matsuoka M, Ogumi Z. 2005. Alkaline direct alcohol fuel cells using an anion exchange membrane. J Power Sources 150 27-31. [Pg.371]

Varcoe JR, Slade RCT. 2006. An electron-beam-grafted ETFE alkaline anion-exchange membrane in metal-cation-fiee solid-state alkaline fuel cells. Electrochem Commun 8 839-843. [Pg.372]

Solid alkaline membrane fuel cell (SAMFC) working at moderate temperatures (20-80 °C) for which an anion-exchange membrane (AEM) is the electrolyte, electrically conducting by, for example, hydroxyl ions (OH ). [Pg.17]

The first key component of a membrane fuel cell is the membrane electrolyte. Its central role lies in the separation of the two electrodes and the transport of ionic species (e.g. hydroxyl ion, OH , in an AEM), between them. In general, quaternary ammonium groups are used as anion-exchange groups in these materials. However, due to their low stability in highly alkaline media [43,44], only a few membranes have been evaluated for use as solid polymer electrolytes in alkaline fuel cells. [Pg.30]

The hydrated Nafion membrane currently used in SPE cells provides a highly acidic environment, equivalent to a 10 wt% H SOif solution (13). Thus, noble metals or noble metal oxides have to be used as electrocatalysts. It is of particular interest to develop an anion exchange membrane which will transport hydroxyl ions under water electrolysis or fuel cell conditions. This implies that the cell environment would be alkaline, which would enable the substitution of these expensive... [Pg.463]

In an alkaline fuel cell, which contains an anionically conductive membrane, the exchange media is a hydroxyl radical, ("OH). At the anode, hydrogen is oxidized through a redox reaction, (Equation 3.3), producing water and... [Pg.62]

Despite great efforts, this has not been achieved until now. Existing types of anion-exchange membranes (used for electrodialysis) are far inferior to Nafion, both in their conductivity and in the chemical and thermal stability. Therefore, one cannot so far meaningfully discuss their potential as substitutes for the circulating or matrix electrolyte in alkaline hydrogen-oxygen fuel cells. [Pg.236]

Anion-exchange membranes are also discussed in Chap. 6 because of the facile electro-oxidation of alcohols in alkaline media and because of the minimization of alcohol crossover in alkaline direct alcohol fuel cells. [Pg.22]

Li L, Wang Y (2005) Quatemized polyethersulfone Cardo anion exchange membranes for direct methanol alkaline fuel cells. J Membr Sci 262 1-4... [Pg.215]

Xiong Y, Liu QL, Zeng QH (2009) Quatemized cardo polyetherketone anion exchange membrane for direct methanol alkaline fuel cells. J Power Sources 193 541-546... [Pg.215]

Hu J, Zhang C, Cong J, Toyoda H, Nagatsu M, Meng Y (2011) Plasma-grafted alkaline anion-exchange membranes based on polyvinyl chloride for potential application in direct methanol fuel cells. J Power Sources 196 4483 1490... [Pg.216]

Zhang Y, Pang J, Wu Y, Xu H, Chi X, Li W, Yang Y, Yan G (2012) Novel fluoropolymer anion exchange membrane for alkaline direct methanol fuel cells. J Colloid Interface Sd 381 59-66... [Pg.216]

Zhou T, Zhang J, Qiao J, Liu L, Jiang G, Zhang J, Liu Y (2013) High Durable poly(vinyl alcohol)/quatemized hydroxyethylcellnlose ethoxylate anion exchange membranes fin direct methanol alkaline fuel cells. J Power Sources 227 291—299... [Pg.217]

Prakash GKS, Krause EC, Viva FA, Narayanan SR, Olah GA (2011) Study of operation conditions and cell design on the performance of alkaline anion exchange membrane based direct methanol fuel cells. J Power Sources 196 7967-7972... [Pg.217]

Yu EH, Scott K (2004) Development of direct methanol alkaline fuel cells using anion exchange membranes. J Power Sources 137 248-256... [Pg.218]

Yu EH, Scott K (2005) Direct methanol alkaline fuel cell with catalysed anion exchange membrane electrodes. J Appl Electrochem 35 91-96... [Pg.218]

Santasalo-Aamio A, Hietala S, Rauhala T, Kallio T (2011) In and ex situ characterization of an anion-exchange membrane for alkaline direct methanol fuel cell (ADMFC). J Power... [Pg.218]

Merle G, Wessling M, Nijmeijer K (2011) Anion exchange membranes for alkaline fuel cells a review. J Membr Sci 377 1-35... [Pg.230]

Matsuoka, K., Chiba, S., Iiiyama, Y., Abe, T., Matsuoka, M., Kikuchi, K. and Ogumi, Z. 2008. Preparation of anion-exchange membrane by plasma polymerization and its use in alkaline fuel cells. [Pg.209]

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