Preparation of Nafion/SiO2 Composite Membrane of Direct Ethanol Fuel Cell

Abstract:

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Membranes are made by doping and modifying the Nafion117 with Nano-silica(SiO2). The penetration and the proton conductivity of composite membrane are studied through gas chromatograph and electrochemical workstation. With the help of cross-section spectrum, it shows that the SiO2 particles can penetrate the internal membrane and the weight percentage is greater than 0.1% after doping and modifying the membranes of Nafion117, so the SiO2 particles has a very good combination with the substrate. The membrane which is handled by Sol on 60°C has high proton conductivity and high water retention performance in high temperature. The permeability coefficient of membrane which is handled by Sol on 60°C and by the other ways are 4.07×10-4cm2/s and 8.13×10-4 cm2/s respectively. It shows that the permeability coefficient of ethanol membrane is reduced by half after the Nafion117 membrane is handled by Sol on 60°C.

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Periodical:

Edited by:

Long Chen, Yongkang Zhang, Aixing Feng, Zhenying Xu, Boquan Li and Han Shen

Pages:

395-400

DOI:

10.4028/www.scientific.net/KEM.464.395

Citation:

H. J. Ni et al., "Preparation of Nafion/SiO2 Composite Membrane of Direct Ethanol Fuel Cell", Key Engineering Materials, Vol. 464, pp. 395-400, 2011

Online since:

January 2011

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Price:

$35.00

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